./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm --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 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 20:59:29,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 20:59:29,467 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-13 20:59:29,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 20:59:29,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 20:59:29,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 20:59:29,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 20:59:29,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 20:59:29,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 20:59:29,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 20:59:29,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 20:59:29,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 20:59:29,519 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 20:59:29,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 20:59:29,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 20:59:29,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 20:59:29,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 20:59:29,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 20:59:29,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 20:59:29,520 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 20:59:29,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 20:59:29,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 20:59:29,521 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 20:59:29,521 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 20:59:29,521 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 20:59:29,521 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 20:59:29,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 20:59:29,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 20:59:29,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 20:59:29,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 20:59:29,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 20:59:29,521 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 20:59:29,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 20:59:29,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm 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 -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2024-11-13 20:59:29,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 20:59:29,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 20:59:29,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 20:59:29,957 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 20:59:29,958 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 20:59:29,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c Unable to find full path for "g++" [2024-11-13 20:59:31,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 20:59:32,243 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 20:59:32,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2024-11-13 20:59:32,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/data/155c17902/94fcfffc60b94ff2bcd475c475fe85a1/FLAG626a52e51 [2024-11-13 20:59:32,542 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/data/155c17902/94fcfffc60b94ff2bcd475c475fe85a1 [2024-11-13 20:59:32,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 20:59:32,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 20:59:32,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 20:59:32,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 20:59:32,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 20:59:32,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd8d2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32, skipping insertion in model container [2024-11-13 20:59:32,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,569 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 20:59:32,759 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_75c94d0b-768e-49b1-bb21-44f2398795b4/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2024-11-13 20:59:32,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 20:59:32,775 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 20:59:32,793 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_75c94d0b-768e-49b1-bb21-44f2398795b4/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2024-11-13 20:59:32,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 20:59:32,810 INFO L204 MainTranslator]: Completed translation [2024-11-13 20:59:32,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32 WrapperNode [2024-11-13 20:59:32,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 20:59:32,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 20:59:32,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 20:59:32,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 20:59:32,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,841 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-13 20:59:32,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 20:59:32,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 20:59:32,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 20:59:32,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 20:59:32,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 20:59:32,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 20:59:32,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 20:59:32,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 20:59:32,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:59:32" (1/1) ... [2024-11-13 20:59:32,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 20:59:32,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 20:59:32,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 20:59:32,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 20:59:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 20:59:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 20:59:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-13 20:59:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-13 20:59:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-13 20:59:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-13 20:59:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 20:59:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 20:59:33,025 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 20:59:33,028 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 20:59:33,166 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-13 20:59:33,166 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 20:59:33,186 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 20:59:33,186 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 20:59:33,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:59:33 BoogieIcfgContainer [2024-11-13 20:59:33,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 20:59:33,188 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 20:59:33,188 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 20:59:33,199 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 20:59:33,199 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:59:33" (1/1) ... [2024-11-13 20:59:33,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 20:59:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2024-11-13 20:59:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-13 20:59:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 20:59:33,264 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:33,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 20:59:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2024-11-13 20:59:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-13 20:59:33,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 20:59:33,652 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 20:59:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2024-11-13 20:59:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-11-13 20:59:34,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 20:59:34,025 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 20:59:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 36 states and 50 transitions. [2024-11-13 20:59:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2024-11-13 20:59:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 20:59:34,449 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:34,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 20:59:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 43 states and 66 transitions. [2024-11-13 20:59:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2024-11-13 20:59:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 20:59:35,635 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 20:59:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 45 states and 69 transitions. [2024-11-13 20:59:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 69 transitions. [2024-11-13 20:59:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 20:59:36,448 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:36,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 20:59:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 45 states and 66 transitions. [2024-11-13 20:59:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2024-11-13 20:59:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 20:59:37,902 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 20:59:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:40,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 57 states and 95 transitions. [2024-11-13 20:59:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 95 transitions. [2024-11-13 20:59:40,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 20:59:40,103 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:40,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 20:59:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 57 states and 94 transitions. [2024-11-13 20:59:40,505 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 94 transitions. [2024-11-13 20:59:40,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 20:59:40,510 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:40,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 20:59:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 57 states and 93 transitions. [2024-11-13 20:59:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 93 transitions. [2024-11-13 20:59:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 20:59:40,949 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:40,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:59:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 46 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 20:59:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:59:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 60 states and 96 transitions. [2024-11-13 20:59:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 96 transitions. [2024-11-13 20:59:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 20:59:44,714 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:59:44,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:59:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:59:44,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 20:59:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:59:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:59:44,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 20:59:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:59:44,874 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2024-11-13 20:59:44,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 08:59:44 ImpRootNode [2024-11-13 20:59:44,936 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 20:59:44,937 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 20:59:44,937 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 20:59:44,937 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 20:59:44,938 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:59:33" (3/4) ... [2024-11-13 20:59:44,939 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 20:59:45,007 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 20:59:45,010 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 20:59:45,011 INFO L158 Benchmark]: Toolchain (without parser) took 12464.78ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 92.9MB in the beginning and 104.5MB in the end (delta: -11.7MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-11-13 20:59:45,012 INFO L158 Benchmark]: CDTParser took 2.71ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:59:45,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.09ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 82.1MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 20:59:45,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.47ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 81.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:59:45,013 INFO L158 Benchmark]: Boogie Preprocessor took 23.73ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 80.4MB in the end (delta: 589.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:59:45,013 INFO L158 Benchmark]: RCFGBuilder took 319.34ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 69.8MB in the end (delta: 10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 20:59:45,014 INFO L158 Benchmark]: CodeCheck took 11748.00ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 69.6MB in the beginning and 107.0MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:59:45,014 INFO L158 Benchmark]: Witness Printer took 73.37ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 104.5MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 20:59:45,016 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: 11.7s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 916 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 338 mSDsluCounter, 856 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 381 mSDsCounter, 605 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2048 IncrementalHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 605 mSolverCounterUnsat, 475 mSDtfsCounter, 2048 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3214 GetRequests, 2992 SyntacticMatches, 65 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9239 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 224/281 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 = 4; VAL [x=4] [L39] CALL, EXPR fibo1(x) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) 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-1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-2) 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-2) VAL [\old(n)=4, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) VAL [x=4] [L39] int result = fibo1(x); [L40] COND TRUE result == 3 VAL [x=4] [L41] reach_error() VAL [x=4] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.71ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.09ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 82.1MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.47ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 81.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.73ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 80.4MB in the end (delta: 589.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.34ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 69.8MB in the end (delta: 10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 11748.00ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 69.6MB in the beginning and 107.0MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 73.37ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 104.5MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 20:59:45,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c94d0b-768e-49b1-bb21-44f2398795b4/bin/ukojak-verify-EEHR8qb7sm/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