./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk --witnessprinter.witness.filename witness --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 18afe523baca40cb7d279a05e0d0a8c37efda6f4bcc6a4be698eb3701f39ab37 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:24:06,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:24:06,481 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-08 23:24:06,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 23:24:06,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 23:24:06,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:24:06,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 23:24:06,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 23:24:06,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:24:06,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:24:06,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:24:06,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 23:24:06,544 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 23:24:06,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 23:24:06,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 23:24:06,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:24:06,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 23:24:06,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:24:06,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 23:24:06,553 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:24:06,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 23:24:06,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 23:24:06,554 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:24:06,555 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:24:06,555 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:24:06,555 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:24:06,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:24:06,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:24:06,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:24:06,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:24:06,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 23:24:06,560 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 23:24:06,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 23:24:06,561 INFO L153 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_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18afe523baca40cb7d279a05e0d0a8c37efda6f4bcc6a4be698eb3701f39ab37 [2024-11-08 23:24:06,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:24:06,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:24:06,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:24:06,943 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:24:06,944 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:24:06,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c Unable to find full path for "g++" [2024-11-08 23:24:09,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:24:09,358 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:24:09,359 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2024-11-08 23:24:09,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/data/dbc0e3fd4/58b9802c8edb4f0e8466bfc46ed60607/FLAGa75184b26 [2024-11-08 23:24:09,693 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/data/dbc0e3fd4/58b9802c8edb4f0e8466bfc46ed60607 [2024-11-08 23:24:09,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:24:09,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:24:09,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:24:09,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:24:09,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:24:09,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:09,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8799e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09, skipping insertion in model container [2024-11-08 23:24:09,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:09,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:24:09,905 WARN L250 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_88e78d22-5291-42ee-83e2-c900e1313652/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2024-11-08 23:24:09,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:24:09,919 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:24:09,933 WARN L250 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_88e78d22-5291-42ee-83e2-c900e1313652/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2024-11-08 23:24:09,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:24:09,951 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:24:09,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09 WrapperNode [2024-11-08 23:24:09,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:24:09,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:24:09,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:24:09,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:24:09,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:09,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:09,985 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-11-08 23:24:09,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:24:09,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:24:09,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:24:09,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:24:09,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:09,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:09,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:09,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:10,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:10,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:10,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:10,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:10,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:24:10,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:24:10,006 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:24:10,006 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:24:10,007 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:09" (1/1) ... [2024-11-08 23:24:10,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:24:10,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:24:10,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:24:10,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:24:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 23:24:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:24:10,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:24:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 23:24:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-11-08 23:24:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-11-08 23:24:10,144 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:24:10,146 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:24:10,269 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-08 23:24:10,273 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:24:10,313 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:24:10,314 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 23:24:10,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:24:10 BoogieIcfgContainer [2024-11-08 23:24:10,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:24:10,315 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:24:10,315 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:24:10,324 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:24:10,325 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:24:10" (1/1) ... [2024-11-08 23:24:10,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:24:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:24:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2024-11-08 23:24:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-08 23:24:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 23:24:10,400 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:24:10,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:24:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:24:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:24:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:24:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2024-11-08 23:24:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-08 23:24:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 23:24:10,744 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:24:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:24:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:24:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 23:24:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:24:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2024-11-08 23:24:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-08 23:24:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 23:24:11,395 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:24:11,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:24:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:24:11,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:24:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:24:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:24:11,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:24:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:24:11,610 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2024-11-08 23:24:11,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 11:24:11 ImpRootNode [2024-11-08 23:24:11,647 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 23:24:11,648 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 23:24:11,648 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 23:24:11,649 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 23:24:11,649 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:24:10" (3/4) ... [2024-11-08 23:24:11,650 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 23:24:11,697 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 23:24:11,697 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 23:24:11,698 INFO L158 Benchmark]: Toolchain (without parser) took 2000.70ms. Allocated memory is still 144.7MB. Free memory was 113.8MB in the beginning and 110.8MB in the end (delta: 3.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2024-11-08 23:24:11,698 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 144.7MB. Free memory is still 113.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:24:11,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.09ms. Allocated memory is still 144.7MB. Free memory was 113.5MB in the beginning and 101.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 23:24:11,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.93ms. Allocated memory is still 144.7MB. Free memory was 101.2MB in the beginning and 99.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:24:11,700 INFO L158 Benchmark]: Boogie Preprocessor took 19.12ms. Allocated memory is still 144.7MB. Free memory was 99.8MB in the beginning and 99.2MB in the end (delta: 582.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:24:11,701 INFO L158 Benchmark]: RCFGBuilder took 308.46ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 87.8MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 23:24:11,701 INFO L158 Benchmark]: CodeCheck took 1332.17ms. Allocated memory is still 144.7MB. Free memory was 87.8MB in the beginning and 112.9MB in the end (delta: -25.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:24:11,702 INFO L158 Benchmark]: Witness Printer took 49.21ms. Allocated memory is still 144.7MB. Free memory was 112.9MB in the beginning and 110.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:24:11,705 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 26 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL, EXPR id(input) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0] [L8] RET, EXPR id((unsigned int)x-1) VAL [\old(x)=1, x=1] [L8] int ret = id((unsigned int)x-1) + 1; [L9] COND FALSE !(ret > 3) [L10] return ret; VAL [\old(x)=1, \result=1, x=1] [L8] RET, EXPR id((unsigned int)x-1) VAL [\old(x)=2, x=2] [L8] int ret = id((unsigned int)x-1) + 1; [L9] COND FALSE !(ret > 3) [L10] return ret; VAL [\old(x)=2, \result=2, x=2] [L15] RET, EXPR id(input) VAL [input=2] [L15] int result = id(input); [L16] COND TRUE result == 2 VAL [input=2] [L17] reach_error() VAL [input=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 144.7MB. Free memory is still 113.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.09ms. Allocated memory is still 144.7MB. Free memory was 113.5MB in the beginning and 101.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.93ms. Allocated memory is still 144.7MB. Free memory was 101.2MB in the beginning and 99.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.12ms. Allocated memory is still 144.7MB. Free memory was 99.8MB in the beginning and 99.2MB in the end (delta: 582.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 308.46ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 87.8MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 1332.17ms. Allocated memory is still 144.7MB. Free memory was 87.8MB in the beginning and 112.9MB in the end (delta: -25.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 49.21ms. Allocated memory is still 144.7MB. Free memory was 112.9MB in the beginning and 110.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 23:24:11,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e78d22-5291-42ee-83e2-c900e1313652/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with 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