./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/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_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 23:15:05,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 23:15:05,961 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-12-05 23:15:05,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 23:15:05,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 23:15:05,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 23:15:05,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 23:15:05,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 23:15:05,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 23:15:05,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 23:15:05,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 23:15:05,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 23:15:05,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 23:15:05,986 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 23:15:05,987 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 23:15:05,987 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 23:15:05,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 23:15:05,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:15:05,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 23:15:05,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 23:15:05,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 23:15:05,987 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 23:15:05,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 23:15:05,988 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_e1fb466f-f6a2-4353-8ab8-914d855db908/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 [2024-12-05 23:15:06,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 23:15:06,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 23:15:06,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 23:15:06,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 23:15:06,202 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 23:15:06,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2024-12-05 23:15:08,771 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/data/df444bd24/18216584b08d40388d6551e95f1b12d4/FLAGa04869153 [2024-12-05 23:15:08,954 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 23:15:08,954 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2024-12-05 23:15:08,961 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/data/df444bd24/18216584b08d40388d6551e95f1b12d4/FLAGa04869153 [2024-12-05 23:15:09,349 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/data/df444bd24/18216584b08d40388d6551e95f1b12d4 [2024-12-05 23:15:09,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 23:15:09,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 23:15:09,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 23:15:09,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 23:15:09,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 23:15:09,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2a1ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09, skipping insertion in model container [2024-12-05 23:15:09,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,367 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 23:15:09,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:15:09,485 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 23:15:09,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:15:09,505 INFO L204 MainTranslator]: Completed translation [2024-12-05 23:15:09,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09 WrapperNode [2024-12-05 23:15:09,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 23:15:09,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 23:15:09,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 23:15:09,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 23:15:09,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,523 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2024-12-05 23:15:09,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 23:15:09,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 23:15:09,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 23:15:09,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 23:15:09,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,531 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 23:15:09,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 23:15:09,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 23:15:09,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 23:15:09,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:15:09,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 23:15:09,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 23:15:09,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 23:15:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2024-12-05 23:15:09,584 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2024-12-05 23:15:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2024-12-05 23:15:09,584 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2024-12-05 23:15:09,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 23:15:09,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 23:15:09,627 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 23:15:09,629 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 23:15:09,736 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-05 23:15:09,736 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 23:15:09,752 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 23:15:09,752 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-05 23:15:09,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:15:09 BoogieIcfgContainer [2024-12-05 23:15:09,752 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 23:15:09,753 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 23:15:09,753 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 23:15:09,760 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 23:15:09,760 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:15:09" (1/1) ... [2024-12-05 23:15:09,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 23:15:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 42 states and 47 transitions. [2024-12-05 23:15:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-12-05 23:15:09,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-05 23:15:09,815 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 41 states and 46 transitions. [2024-12-05 23:15:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-12-05 23:15:09,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-05 23:15:09,950 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:09,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 51 transitions. [2024-12-05 23:15:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-12-05 23:15:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-05 23:15:10,141 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 40 states and 45 transitions. [2024-12-05 23:15:10,279 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-12-05 23:15:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 23:15:10,280 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 23:15:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 39 states and 44 transitions. [2024-12-05 23:15:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-12-05 23:15:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-05 23:15:10,349 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 23:15:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 45 states and 55 transitions. [2024-12-05 23:15:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-12-05 23:15:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-05 23:15:10,554 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:10,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 23:15:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 49 states and 63 transitions. [2024-12-05 23:15:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2024-12-05 23:15:10,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-05 23:15:10,697 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-05 23:15:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 48 states and 62 transitions. [2024-12-05 23:15:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-12-05 23:15:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-05 23:15:10,845 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:10,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:11,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-05 23:15:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 20 states and 21 transitions. [2024-12-05 23:15:11,405 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-12-05 23:15:11,406 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-05 23:15:11,406 WARN L417 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2024-12-05 23:15:11,414 INFO L726 CodeCheckObserver]: All specifications hold 10 specifications checked. All of them hold [2024-12-05 23:15:11,470 INFO L77 FloydHoareUtils]: At program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,470 INFO L77 FloydHoareUtils]: At program point rec1FINAL(lines 11 15) the Hoare annotation is: true [2024-12-05 23:15:11,470 INFO L77 FloydHoareUtils]: At program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,470 INFO L77 FloydHoareUtils]: At program point rec1EXIT(lines 11 15) the Hoare annotation is: true [2024-12-05 23:15:11,470 INFO L77 FloydHoareUtils]: At program point L14(line 14) the Hoare annotation is: (<= 1 rec1_~i) [2024-12-05 23:15:11,470 INFO L77 FloydHoareUtils]: At program point L14-1(line 14) the Hoare annotation is: (<= 1 rec1_~i) [2024-12-05 23:15:11,470 INFO L77 FloydHoareUtils]: At program point L12(lines 12 13) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point L14-2(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point L14-3(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point L14-4(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(lines 11 15) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point L14-5(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point L14-6(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L75 FloydHoareUtils]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point L14-7(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,471 INFO L77 FloydHoareUtils]: At program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point L14-8(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point L14-9(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point L14-10(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point L14-11(line 14) the Hoare annotation is: true [2024-12-05 23:15:11,472 INFO L75 FloydHoareUtils]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point rec2FINAL(lines 17 21) the Hoare annotation is: true [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point rec2EXIT(lines 17 21) the Hoare annotation is: true [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point L20(line 20) the Hoare annotation is: (and (<= 1 rec2_~j) (<= rec2_~j 2147483647)) [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point L20-1(line 20) the Hoare annotation is: (<= rec2_~j 2147483647) [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point L18(lines 18 19) the Hoare annotation is: (<= rec2_~j 2147483647) [2024-12-05 23:15:11,472 INFO L77 FloydHoareUtils]: At program point L20-2(line 20) the Hoare annotation is: (<= rec2_~j 2147483647) [2024-12-05 23:15:11,473 INFO L77 FloydHoareUtils]: At program point L20-3(line 20) the Hoare annotation is: true [2024-12-05 23:15:11,473 INFO L77 FloydHoareUtils]: At program point L20-4(line 20) the Hoare annotation is: true [2024-12-05 23:15:11,473 INFO L77 FloydHoareUtils]: At program point L20-5(line 20) the Hoare annotation is: true [2024-12-05 23:15:11,473 INFO L77 FloydHoareUtils]: At program point L20-6(line 20) the Hoare annotation is: (<= |rec2_#t~ret4| 2147483647) [2024-12-05 23:15:11,473 INFO L77 FloydHoareUtils]: At program point L20-7(line 20) the Hoare annotation is: (<= |rec2_#t~ret4| 2147483647) [2024-12-05 23:15:11,473 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(lines 17 21) the Hoare annotation is: (<= |rec2_#in~j| 2147483647) [2024-12-05 23:15:11,473 INFO L77 FloydHoareUtils]: At program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) the Hoare annotation is: true [2024-12-05 23:15:11,473 INFO L75 FloydHoareUtils]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2024-12-05 23:15:11,473 INFO L75 FloydHoareUtils]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2024-12-05 23:15:11,473 INFO L77 FloydHoareUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2024-12-05 23:15:11,474 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2024-12-05 23:15:11,474 INFO L77 FloydHoareUtils]: At program point L25(line 25) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2024-12-05 23:15:11,474 INFO L77 FloydHoareUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2024-12-05 23:15:11,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 11:15:11 ImpRootNode [2024-12-05 23:15:11,489 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 23:15:11,490 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 23:15:11,490 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 23:15:11,490 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 23:15:11,490 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:15:09" (3/4) ... [2024-12-05 23:15:11,492 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-05 23:15:11,495 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2024-12-05 23:15:11,495 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2024-12-05 23:15:11,499 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-12-05 23:15:11,499 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-12-05 23:15:11,499 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-05 23:15:11,551 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 23:15:11,551 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 23:15:11,551 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 23:15:11,552 INFO L158 Benchmark]: Toolchain (without parser) took 2200.32ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 109.1MB in the end (delta: 8.6MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2024-12-05 23:15:11,552 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 142.6MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:15:11,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.27ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 107.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:15:11,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.31ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 106.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:15:11,553 INFO L158 Benchmark]: Boogie Preprocessor took 11.93ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 106.1MB in the end (delta: 464.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:15:11,553 INFO L158 Benchmark]: RCFGBuilder took 216.35ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 94.7MB in the end (delta: 11.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 23:15:11,554 INFO L158 Benchmark]: CodeCheck took 1735.97ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 114.1MB in the end (delta: -19.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:15:11,554 INFO L158 Benchmark]: Witness Printer took 61.83ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 109.1MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:15:11,556 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, 42 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 311 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 259 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 449 IncrementalHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 241 mSDtfsCounter, 449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 919 GetRequests, 851 SyntacticMatches, 20 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 34/34 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 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - ProcedureContractResult [Line: 17]: Procedure Contract for rec2 Derived contract for procedure rec2. Requires: (j <= 2147483647) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 142.6MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 152.27ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 107.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.31ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 106.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.93ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 106.1MB in the end (delta: 464.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.35ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 94.7MB in the end (delta: 11.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1735.97ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 114.1MB in the end (delta: -19.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.83ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 109.1MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2024-12-05 23:15:11,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fb466f-f6a2-4353-8ab8-914d855db908/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 Result: TRUE