./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b --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 019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 00:53:15,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 00:53:15,439 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-06 00:53:15,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 00:53:15,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 00:53:15,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 00:53:15,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 00:53:15,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 00:53:15,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 00:53:15,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 00:53:15,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 00:53:15,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 00:53:15,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 00:53:15,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 00:53:15,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 00:53:15,463 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 00:53:15,464 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 00:53:15,464 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 00:53:15,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 00:53:15,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 00:53:15,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 00:53:15,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 00:53:15,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 00:53:15,464 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 00:53:15,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 00:53:15,465 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_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b 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 -> 019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef [2024-12-06 00:53:15,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 00:53:15,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 00:53:15,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 00:53:15,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 00:53:15,687 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 00:53:15,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2024-12-06 00:53:18,285 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/data/affc1aa4b/3987c13beacd4b06bb11b4b3a92c198c/FLAGb2823766b [2024-12-06 00:53:18,488 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 00:53:18,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2024-12-06 00:53:18,495 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/data/affc1aa4b/3987c13beacd4b06bb11b4b3a92c198c/FLAGb2823766b [2024-12-06 00:53:18,863 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/data/affc1aa4b/3987c13beacd4b06bb11b4b3a92c198c [2024-12-06 00:53:18,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 00:53:18,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 00:53:18,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 00:53:18,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 00:53:18,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 00:53:18,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 12:53:18" (1/1) ... [2024-12-06 00:53:18,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ef0782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:18, skipping insertion in model container [2024-12-06 00:53:18,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 12:53:18" (1/1) ... [2024-12-06 00:53:18,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 00:53:19,002 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_38af6efc-4d51-4976-81ae-62db2557f0b1/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c[450,463] [2024-12-06 00:53:19,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 00:53:19,015 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 00:53:19,025 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_38af6efc-4d51-4976-81ae-62db2557f0b1/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c[450,463] [2024-12-06 00:53:19,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 00:53:19,039 INFO L204 MainTranslator]: Completed translation [2024-12-06 00:53:19,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19 WrapperNode [2024-12-06 00:53:19,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 00:53:19,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 00:53:19,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 00:53:19,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 00:53:19,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,066 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-12-06 00:53:19,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 00:53:19,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 00:53:19,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 00:53:19,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 00:53:19,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,073 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 00:53:19,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 00:53:19,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 00:53:19,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 00:53:19,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 00:53:19,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 00:53:19,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 00:53:19,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 00:53:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 00:53:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 00:53:19,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 00:53:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 00:53:19,136 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-12-06 00:53:19,136 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-12-06 00:53:19,186 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 00:53:19,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 00:53:19,256 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-12-06 00:53:19,256 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 00:53:19,272 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 00:53:19,272 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-06 00:53:19,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:53:19 BoogieIcfgContainer [2024-12-06 00:53:19,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 00:53:19,273 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 00:53:19,273 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 00:53:19,280 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 00:53:19,280 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:53:19" (1/1) ... [2024-12-06 00:53:19,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 00:53:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 00:53:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2024-12-06 00:53:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-12-06 00:53:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 00:53:19,336 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 00:53:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 00:53:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 00:53:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 00:53:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 00:53:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2024-12-06 00:53:19,593 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-12-06 00:53:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-06 00:53:19,593 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 00:53:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 00:53:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 00:53:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-06 00:53:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 00:53:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 31 transitions. [2024-12-06 00:53:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2024-12-06 00:53:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-06 00:53:20,054 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 00:53:20,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 00:53:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 00:53:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-06 00:53:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 00:53:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 28 states and 42 transitions. [2024-12-06 00:53:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2024-12-06 00:53:20,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-06 00:53:20,486 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 00:53:20,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 00:53:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 00:53:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-06 00:53:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 00:53:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 33 states and 55 transitions. [2024-12-06 00:53:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2024-12-06 00:53:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-06 00:53:20,929 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 00:53:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 00:53:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 00:53:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-06 00:53:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 00:53:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 38 states and 70 transitions. [2024-12-06 00:53:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2024-12-06 00:53:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-06 00:53:21,425 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 00:53:21,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 00:53:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 00:53:21,439 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 00:53:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 00:53:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 00:53:21,491 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 00:53:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 00:53:21,516 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-12-06 00:53:21,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 12:53:21 ImpRootNode [2024-12-06 00:53:21,538 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 00:53:21,539 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 00:53:21,539 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 00:53:21,539 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 00:53:21,540 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:53:19" (3/4) ... [2024-12-06 00:53:21,540 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 00:53:21,572 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 20. [2024-12-06 00:53:21,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 00:53:21,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 00:53:21,615 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 00:53:21,616 INFO L158 Benchmark]: Toolchain (without parser) took 2749.77ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 65.0MB in the end (delta: 52.1MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. [2024-12-06 00:53:21,616 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 00:53:21,616 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.14ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 106.3MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 00:53:21,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.59ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 105.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 00:53:21,617 INFO L158 Benchmark]: Boogie Preprocessor took 10.08ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 104.7MB in the end (delta: 578.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 00:53:21,617 INFO L158 Benchmark]: RCFGBuilder took 195.05ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 94.9MB in the end (delta: 9.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 00:53:21,618 INFO L158 Benchmark]: CodeCheck took 2265.35ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 69.9MB in the end (delta: 25.0MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2024-12-06 00:53:21,618 INFO L158 Benchmark]: Witness Printer took 76.41ms. Allocated memory is still 142.6MB. Free memory was 69.1MB in the beginning and 65.0MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 00:53:21,620 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: 2.2s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 205 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 187 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 551 IncrementalHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 97 mSDtfsCounter, 551 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1074 GetRequests, 974 SyntacticMatches, 42 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 50/100 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, ConComCheckerStatistics: No data available - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 5; VAL [input=5] [L13] CALL, EXPR id(input) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, x=5] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) VAL [input=5] [L13] int result = id(input); [L14] COND TRUE result == 5 VAL [input=5] [L15] reach_error() VAL [input=5] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.14ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 106.3MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.59ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 105.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.08ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 104.7MB in the end (delta: 578.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 195.05ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 94.9MB in the end (delta: 9.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2265.35ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 69.9MB in the end (delta: 25.0MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Witness Printer took 76.41ms. Allocated memory is still 142.6MB. Free memory was 69.1MB in the beginning and 65.0MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 00:53:21,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38af6efc-4d51-4976-81ae-62db2557f0b1/bin/ukojak-verify-CZk0znPC7b/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