./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.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_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/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_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/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_f56ce990-e256-4991-860e-4aea568daaf8/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 eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:23:41,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:23:41,624 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-08 23:23:41,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 23:23:41,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 23:23:41,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:23:41,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 23:23:41,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 23:23:41,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:23:41,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:23:41,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:23:41,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 23:23:41,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 23:23:41,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 23:23:41,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 23:23:41,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:23:41,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 23:23:41,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:23:41,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 23:23:41,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:23:41,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 23:23:41,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 23:23:41,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:23:41,686 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:23:41,686 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:23:41,686 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:23:41,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:23:41,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:23:41,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:23:41,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:23:41,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 23:23:41,692 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 23:23:41,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 23:23:41,693 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_f56ce990-e256-4991-860e-4aea568daaf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2024-11-08 23:23:41,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:23:41,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:23:41,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:23:41,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:23:41,968 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:23:41,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c Unable to find full path for "g++" [2024-11-08 23:23:44,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:23:44,258 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:23:44,258 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2024-11-08 23:23:44,267 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/data/e0471df1d/6b5f76e79618460ea5aa6e39b2a52c84/FLAG6ea534dcf [2024-11-08 23:23:44,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/data/e0471df1d/6b5f76e79618460ea5aa6e39b2a52c84 [2024-11-08 23:23:44,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:23:44,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:23:44,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:23:44,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:23:44,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:23:44,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5259ee5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44, skipping insertion in model container [2024-11-08 23:23:44,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:23:44,535 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_f56ce990-e256-4991-860e-4aea568daaf8/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2024-11-08 23:23:44,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:23:44,548 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:23:44,561 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_f56ce990-e256-4991-860e-4aea568daaf8/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2024-11-08 23:23:44,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:23:44,579 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:23:44,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44 WrapperNode [2024-11-08 23:23:44,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:23:44,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:23:44,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:23:44,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:23:44,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,611 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-08 23:23:44,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:23:44,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:23:44,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:23:44,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:23:44,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,627 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:23:44,633 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:23:44,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:23:44,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:23:44,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:23:44,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:23:44,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:23:44,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:23:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 23:23:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 23:23:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-08 23:23:44,698 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-08 23:23:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-08 23:23:44,699 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-08 23:23:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:23:44,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:23:44,767 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:23:44,769 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:23:44,903 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-08 23:23:44,903 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:23:44,935 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:23:44,936 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 23:23:44,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:23:44 BoogieIcfgContainer [2024-11-08 23:23:44,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:23:44,937 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:23:44,937 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:23:44,948 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:23:44,948 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:23:44" (1/1) ... [2024-11-08 23:23:44,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:23:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2024-11-08 23:23:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-08 23:23:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 23:23:45,023 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:45,258 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 23:23:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2024-11-08 23:23:45,358 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-08 23:23:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 23:23:45,359 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:45,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:45,546 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 23:23:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2024-11-08 23:23:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-11-08 23:23:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 23:23:45,803 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:45,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 23:23:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 36 states and 50 transitions. [2024-11-08 23:23:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2024-11-08 23:23:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 23:23:46,211 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:46,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 23:23:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 43 states and 66 transitions. [2024-11-08 23:23:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2024-11-08 23:23:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 23:23:47,202 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 23:23:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 45 states and 69 transitions. [2024-11-08 23:23:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 69 transitions. [2024-11-08 23:23:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 23:23:47,891 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:47,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 23:23:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 45 states and 66 transitions. [2024-11-08 23:23:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2024-11-08 23:23:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 23:23:49,113 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:49,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 23:23:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 57 states and 95 transitions. [2024-11-08 23:23:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 95 transitions. [2024-11-08 23:23:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 23:23:50,924 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:50,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 23:23:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 57 states and 94 transitions. [2024-11-08 23:23:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 94 transitions. [2024-11-08 23:23:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 23:23:51,294 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:51,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 23:23:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 60 states and 102 transitions. [2024-11-08 23:23:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 102 transitions. [2024-11-08 23:23:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 23:23:53,614 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:53,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 9 proven. 62 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-08 23:23:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 70 states and 129 transitions. [2024-11-08 23:23:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2024-11-08 23:23:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 23:23:55,156 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 54 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-08 23:23:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 72 states and 131 transitions. [2024-11-08 23:23:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2024-11-08 23:23:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 23:23:55,617 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:55,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 17 proven. 98 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-08 23:23:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 74 states and 133 transitions. [2024-11-08 23:23:56,129 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 133 transitions. [2024-11-08 23:23:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-08 23:23:56,134 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1608 backedges. 196 proven. 76 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-11-08 23:23:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 74 states and 118 transitions. [2024-11-08 23:23:58,776 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 118 transitions. [2024-11-08 23:23:58,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-08 23:23:58,780 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:58,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:23:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 100 proven. 113 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2024-11-08 23:23:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:23:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 79 states and 126 transitions. [2024-11-08 23:23:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 126 transitions. [2024-11-08 23:23:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 23:23:59,963 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:23:59,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:23:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:23:59,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:24:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:24:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:24:00,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:24:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:24:00,162 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 15 iterations. [2024-11-08 23:24:00,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 11:24:00 ImpRootNode [2024-11-08 23:24:00,216 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 23:24:00,217 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 23:24:00,218 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 23:24:00,218 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 23:24:00,218 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:23:44" (3/4) ... [2024-11-08 23:24:00,219 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 23:24:00,297 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 23:24:00,297 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 23:24:00,298 INFO L158 Benchmark]: Toolchain (without parser) took 16011.57ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 137.1MB in the beginning and 185.3MB in the end (delta: -48.1MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2024-11-08 23:24:00,301 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:24:00,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.37ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 124.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 23:24:00,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.64ms. Allocated memory is still 172.0MB. Free memory was 124.8MB in the beginning and 123.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:24:00,302 INFO L158 Benchmark]: Boogie Preprocessor took 20.14ms. Allocated memory is still 172.0MB. Free memory was 123.3MB in the beginning and 122.4MB in the end (delta: 919.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:24:00,303 INFO L158 Benchmark]: RCFGBuilder took 302.86ms. Allocated memory is still 172.0MB. Free memory was 122.4MB in the beginning and 111.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 23:24:00,303 INFO L158 Benchmark]: CodeCheck took 15279.56ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 111.2MB in the beginning and 188.4MB in the end (delta: -77.1MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2024-11-08 23:24:00,303 INFO L158 Benchmark]: Witness Printer took 80.75ms. Allocated memory is still 249.6MB. Free memory was 188.4MB in the beginning and 185.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:24:00,305 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 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 15, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1646 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 756 mSDsluCounter, 1612 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 829 mSDsCounter, 1343 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4668 IncrementalHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1343 mSolverCounterUnsat, 783 mSDtfsCounter, 4668 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6842 GetRequests, 6464 SyntacticMatches, 174 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17456 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1039 NumberOfCodeBlocks, 1039 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 920 ConstructedInterpolants, 0 QuantifiedInterpolants, 1536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 2519/2971 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: 41]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] int x = 5; VAL [x=5] [L39] CALL, EXPR fibo1(x) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, n=5] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) VAL [x=5] [L39] int result = fibo1(x); [L40] COND TRUE result == 5 VAL [x=5] [L41] reach_error() VAL [x=5] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.37ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 124.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.64ms. Allocated memory is still 172.0MB. Free memory was 124.8MB in the beginning and 123.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.14ms. Allocated memory is still 172.0MB. Free memory was 123.3MB in the beginning and 122.4MB in the end (delta: 919.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.86ms. Allocated memory is still 172.0MB. Free memory was 122.4MB in the beginning and 111.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 15279.56ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 111.2MB in the beginning and 188.4MB in the end (delta: -77.1MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Witness Printer took 80.75ms. Allocated memory is still 249.6MB. Free memory was 188.4MB in the beginning and 185.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 23:24:00,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56ce990-e256-4991-860e-4aea568daaf8/bin/ukojak-verify-ImItNfHLgk/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