./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/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_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm --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 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 20:57:28,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 20:57:28,657 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-11-13 20:57:28,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 20:57:28,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 20:57:28,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 20:57:28,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 20:57:28,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 20:57:28,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 20:57:28,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 20:57:28,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 20:57:28,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 20:57:28,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 20:57:28,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 20:57:28,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 20:57:28,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 20:57:28,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 20:57:28,704 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 20:57:28,704 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 20:57:28,704 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 20:57:28,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 20:57:28,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 20:57:28,704 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 20:57:28,704 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 20:57:28,704 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 20:57:28,706 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 20:57:28,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 20:57:28,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 20:57:28,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 20:57:28,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 20:57:28,707 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 20:57:28,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 20:57:28,707 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_20e689b2-ce76-4649-a3dd-95fa28886db5/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 ! 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 -> 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 [2024-11-13 20:57:28,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 20:57:29,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 20:57:29,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 20:57:29,021 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 20:57:29,021 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 20:57:29,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i Unable to find full path for "g++" [2024-11-13 20:57:30,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 20:57:31,203 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 20:57:31,204 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2024-11-13 20:57:31,211 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/data/c0c118848/12dab97a0d0944c29aa1525966b1c130/FLAG817c4baf5 [2024-11-13 20:57:31,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/data/c0c118848/12dab97a0d0944c29aa1525966b1c130 [2024-11-13 20:57:31,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 20:57:31,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 20:57:31,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 20:57:31,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 20:57:31,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 20:57:31,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75413224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31, skipping insertion in model container [2024-11-13 20:57:31,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 20:57:31,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 20:57:31,484 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 20:57:31,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 20:57:31,521 INFO L204 MainTranslator]: Completed translation [2024-11-13 20:57:31,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31 WrapperNode [2024-11-13 20:57:31,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 20:57:31,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 20:57:31,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 20:57:31,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 20:57:31,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,560 INFO L138 Inliner]: procedures = 11, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2024-11-13 20:57:31,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 20:57:31,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 20:57:31,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 20:57:31,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 20:57:31,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 20:57:31,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 20:57:31,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 20:57:31,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 20:57:31,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:57:31" (1/1) ... [2024-11-13 20:57:31,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 20:57:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 20:57:31,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 20:57:31,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 20:57:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 20:57:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2024-11-13 20:57:31,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2024-11-13 20:57:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 20:57:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 20:57:31,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 20:57:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 20:57:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 20:57:31,761 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 20:57:31,763 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 20:57:31,967 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-13 20:57:31,967 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 20:57:32,015 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 20:57:32,017 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 20:57:32,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:57:32 BoogieIcfgContainer [2024-11-13 20:57:32,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 20:57:32,019 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 20:57:32,020 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 20:57:32,033 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 20:57:32,033 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:57:32" (1/1) ... [2024-11-13 20:57:32,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 20:57:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:57:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 25 states and 28 transitions. [2024-11-13 20:57:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-13 20:57:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 20:57:32,123 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:57:32,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:57:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:57:33,031 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 20:57:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:57:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 31 states and 40 transitions. [2024-11-13 20:57:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-13 20:57:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 20:57:33,342 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:57:33,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:57:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:57:33,442 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 20:57:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:57:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2024-11-13 20:57:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-13 20:57:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 20:57:33,514 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:57:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:57:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:57:33,790 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 20:57:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:57:33,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 32 states and 42 transitions. [2024-11-13 20:57:33,984 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-11-13 20:57:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 20:57:33,984 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:57:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:57:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:57:34,375 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 20:57:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:57:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2024-11-13 20:57:35,473 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-11-13 20:57:35,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 20:57:35,475 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:57:35,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:57:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:57:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 20:57:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:57:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 43 states and 61 transitions. [2024-11-13 20:57:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2024-11-13 20:57:36,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 20:57:36,995 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:57:36,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:57:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:57:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 20:57:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:57:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 45 states and 62 transitions. [2024-11-13 20:57:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2024-11-13 20:57:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 20:57:37,737 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:57:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:57:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:57:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 20:57:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:57:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 51 states and 70 transitions. [2024-11-13 20:57:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2024-11-13 20:57:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 20:57:38,916 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:57:38,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:57:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:57:38,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 20:57:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:57:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:57:39,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 20:57:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:57:39,105 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2024-11-13 20:57:39,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 08:57:39 ImpRootNode [2024-11-13 20:57:39,155 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 20:57:39,155 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 20:57:39,156 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 20:57:39,156 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 20:57:39,157 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:57:32" (3/4) ... [2024-11-13 20:57:39,158 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 20:57:39,210 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 20:57:39,213 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 20:57:39,214 INFO L158 Benchmark]: Toolchain (without parser) took 7968.71ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 111.2MB in the end (delta: 6.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2024-11-13 20:57:39,215 INFO L158 Benchmark]: CDTParser took 1.54ms. Allocated memory is still 117.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:57:39,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.07ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 106.9MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 20:57:39,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.36ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:57:39,218 INFO L158 Benchmark]: Boogie Preprocessor took 31.38ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 105.0MB in the end (delta: 778.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:57:39,218 INFO L158 Benchmark]: RCFGBuilder took 425.05ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 92.7MB in the end (delta: 12.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 20:57:39,219 INFO L158 Benchmark]: CodeCheck took 7135.82ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 114.0MB in the end (delta: -21.3MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2024-11-13 20:57:39,222 INFO L158 Benchmark]: Witness Printer took 57.86ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 111.2MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:57:39,224 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, 25 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 650 IncrementalHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 48 mSDtfsCounter, 650 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 649 GetRequests, 532 SyntacticMatches, 13 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3363 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/15 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: 10]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int *pp = malloc(sizeof(int)); [L24] int *qq = malloc(sizeof(int)); [L26] *pp = __VERIFIER_nondet_int() [L27] *qq = __VERIFIER_nondet_int() [L28] EXPR \read(*qq) VAL [pp={-14784:0}, qq={-14782:0}] [L28] COND TRUE *qq > 1 [L29] EXPR \read(*qq) [L29] *pp = *qq [L30] *qq = -1 [L31] EXPR \read(*pp) VAL [pp={-14784:0}, qq={-14782:0}] [L31] CALL rec(pp,*pp) VAL [\old(i)=2, \old(op)={-14784:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=2, \old(op)={-14784:0}, i=2, ip={-14779:0}, op={-14784:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=1, \old(op)={-14779:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=1, \old(op)={-14779:0}, i=1, ip={-14785:0}, op={-14779:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=0, \old(op)={-14785:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=0, \old(op)={-14785:0}, i=0, ip={-14783:0}, op={-14785:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=-1, \old(op)={-14783:0}] [L9] COND TRUE i < 0 [L10] EXPR \read(*op) [L10] (*op)-- VAL [\old(i)=-1, \old(op)={-14783:0}, op={-14783:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.54ms. Allocated memory is still 117.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.07ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 106.9MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.36ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.38ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 105.0MB in the end (delta: 778.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 425.05ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 92.7MB in the end (delta: 12.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 7135.82ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 114.0MB in the end (delta: -21.3MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * Witness Printer took 57.86ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 111.2MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 20:57:39,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e689b2-ce76-4649-a3dd-95fa28886db5/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(OVERFLOW)