./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4 --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 f23c4102cc8cffc1c4a7a8ad49a8497c74f47f44c37be04f4ed5f1ca619fac2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 21:56:14,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 21:56:14,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 21:56:14,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 21:56:14,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 21:56:14,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 21:56:14,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 21:56:14,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 21:56:14,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 21:56:14,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 21:56:14,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 21:56:14,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 21:56:14,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 21:56:14,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 21:56:14,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 21:56:14,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 21:56:14,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 21:56:14,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 21:56:14,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 21:56:14,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 21:56:14,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 21:56:14,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 21:56:14,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 21:56:14,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 21:56:14,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 21:56:14,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 21:56:14,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 21:56:14,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 21:56:14,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 21:56:14,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 21:56:14,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 21:56:14,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 21:56:14,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 21:56:14,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 21:56:14,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 21:56:14,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 21:56:14,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 21:56:14,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 21:56:14,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 21:56:14,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 21:56:14,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 21:56:14,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-12-14 21:56:14,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 21:56:14,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 21:56:14,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 21:56:14,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 21:56:14,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 21:56:14,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 21:56:14,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 21:56:14,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 21:56:14,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 21:56:14,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 21:56:14,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 21:56:14,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 21:56:14,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 21:56:14,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 21:56:14,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 21:56:14,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 21:56:14,446 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 21:56:14,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 21:56:14,446 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 21:56:14,446 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 21:56:14,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 21:56:14,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 21:56:14,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 21:56:14,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 21:56:14,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 21:56:14,447 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 21:56:14,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 21:56:14,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 21:56:14,447 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_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f23c4102cc8cffc1c4a7a8ad49a8497c74f47f44c37be04f4ed5f1ca619fac2a [2022-12-14 21:56:14,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 21:56:14,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 21:56:14,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 21:56:14,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 21:56:14,631 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 21:56:14,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2022-12-14 21:56:17,078 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 21:56:17,220 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 21:56:17,221 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2022-12-14 21:56:17,225 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/data/34c185a78/d4f67b5313d9473c80a60444e1afa425/FLAGa19f63d4e [2022-12-14 21:56:17,637 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/data/34c185a78/d4f67b5313d9473c80a60444e1afa425 [2022-12-14 21:56:17,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 21:56:17,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 21:56:17,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 21:56:17,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 21:56:17,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 21:56:17,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ec5f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17, skipping insertion in model container [2022-12-14 21:56:17,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 21:56:17,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 21:56:17,768 WARN L237 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_f9891a14-bb33-44f7-9958-b6cc891dd649/sv-benchmarks/c/recursive-simple/id2_b3_o2.c[771,784] [2022-12-14 21:56:17,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 21:56:17,779 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 21:56:17,789 WARN L237 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_f9891a14-bb33-44f7-9958-b6cc891dd649/sv-benchmarks/c/recursive-simple/id2_b3_o2.c[771,784] [2022-12-14 21:56:17,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 21:56:17,798 INFO L208 MainTranslator]: Completed translation [2022-12-14 21:56:17,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17 WrapperNode [2022-12-14 21:56:17,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 21:56:17,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 21:56:17,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 21:56:17,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 21:56:17,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,820 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-12-14 21:56:17,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 21:56:17,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 21:56:17,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 21:56:17,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 21:56:17,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,831 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 21:56:17,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 21:56:17,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 21:56:17,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 21:56:17,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:56:17" (1/1) ... [2022-12-14 21:56:17,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 21:56:17,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 21:56:17,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 21:56:17,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 21:56:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 21:56:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 21:56:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2022-12-14 21:56:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2022-12-14 21:56:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 21:56:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 21:56:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-12-14 21:56:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-12-14 21:56:17,935 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 21:56:17,937 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 21:56:18,018 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 21:56:18,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 21:56:18,041 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 21:56:18,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:56:18 BoogieIcfgContainer [2022-12-14 21:56:18,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 21:56:18,044 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 21:56:18,044 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 21:56:18,052 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 21:56:18,052 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:56:18" (1/1) ... [2022-12-14 21:56:18,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 21:56:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:56:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2022-12-14 21:56:18,104 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-14 21:56:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 21:56:18,108 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:56:18,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:56:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:56:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:56:18,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:56:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2022-12-14 21:56:18,352 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-14 21:56:18,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 21:56:18,353 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:56:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:56:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:56:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:56:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:56:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 31 states and 37 transitions. [2022-12-14 21:56:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-12-14 21:56:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 21:56:18,814 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:56:18,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:56:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 21:56:18,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 21:56:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 21:56:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 21:56:18,888 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 21:56:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 21:56:18,908 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2022-12-14 21:56:18,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 09:56:18 ImpRootNode [2022-12-14 21:56:18,933 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 21:56:18,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 21:56:18,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 21:56:18,934 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 21:56:18,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:56:18" (3/4) ... [2022-12-14 21:56:18,936 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 21:56:18,964 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 21:56:18,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 21:56:18,965 INFO L158 Benchmark]: Toolchain (without parser) took 1325.04ms. Allocated memory is still 136.3MB. Free memory was 107.7MB in the beginning and 67.3MB in the end (delta: 40.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-12-14 21:56:18,965 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 136.3MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 21:56:18,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.56ms. Allocated memory is still 136.3MB. Free memory was 107.4MB in the beginning and 97.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 21:56:18,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.97ms. Allocated memory is still 136.3MB. Free memory was 97.4MB in the beginning and 96.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 21:56:18,967 INFO L158 Benchmark]: Boogie Preprocessor took 11.22ms. Allocated memory is still 136.3MB. Free memory was 96.0MB in the beginning and 95.0MB in the end (delta: 935.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 21:56:18,967 INFO L158 Benchmark]: RCFGBuilder took 211.02ms. Allocated memory is still 136.3MB. Free memory was 94.7MB in the beginning and 83.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 21:56:18,968 INFO L158 Benchmark]: CodeCheck took 889.41ms. Allocated memory is still 136.3MB. Free memory was 83.9MB in the beginning and 69.4MB in the end (delta: 14.5MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-12-14 21:56:18,968 INFO L158 Benchmark]: Witness Printer took 30.84ms. Allocated memory is still 136.3MB. Free memory was 69.4MB in the beginning and 67.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 21:56:18,971 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 37 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: 27]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] unsigned int input = __VERIFIER_nondet_uint(); [L25] CALL, EXPR id(input) VAL [\old(x)=2] [L10] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=1] [L17] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L18] CALL, EXPR id(x-1) VAL [\old(x)=0] [L10] COND TRUE x==0 [L10] return 0; VAL [\old(x)=0, \result=0, x=0] [L18] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L18] unsigned int ret = id(x-1) + 1; [L19] COND FALSE !(ret > 3) [L20] return ret; VAL [\old(x)=1, \result=1, ret=1, x=1] [L11] RET, EXPR id2(x-1) VAL [\old(x)=2, id2(x-1)=1, x=2] [L11] unsigned int ret = id2(x-1) + 1; [L12] COND FALSE !(ret > 3) [L13] return ret; VAL [\old(x)=2, \result=2, ret=2, x=2] [L25] RET, EXPR id(input) VAL [id(input)=2, input=2] [L25] unsigned int result = id(input); [L26] COND TRUE result == 2 VAL [input=2, result=2] [L27] reach_error() VAL [input=2, result=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 136.3MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.56ms. Allocated memory is still 136.3MB. Free memory was 107.4MB in the beginning and 97.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.97ms. Allocated memory is still 136.3MB. Free memory was 97.4MB in the beginning and 96.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.22ms. Allocated memory is still 136.3MB. Free memory was 96.0MB in the beginning and 95.0MB in the end (delta: 935.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 211.02ms. Allocated memory is still 136.3MB. Free memory was 94.7MB in the beginning and 83.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 889.41ms. Allocated memory is still 136.3MB. Free memory was 83.9MB in the beginning and 69.4MB in the end (delta: 14.5MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Witness Printer took 30.84ms. Allocated memory is still 136.3MB. Free memory was 69.4MB in the beginning and 67.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-12-14 21:56:18,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9891a14-bb33-44f7-9958-b6cc891dd649/bin/ukojak-rkRKPMF4O4/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