./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/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_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 21:46:37,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 21:46:37,530 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-13 21:46:37,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 21:46:37,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 21:46:37,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 21:46:37,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 21:46:37,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 21:46:37,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 21:46:37,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 21:46:37,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 21:46:37,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 21:46:37,579 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 21:46:37,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 21:46:37,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 21:46:37,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 21:46:37,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 21:46:37,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 21:46:37,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 21:46:37,580 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 21:46:37,580 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 21:46:37,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 21:46:37,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 21:46:37,580 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 21:46:37,581 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 21:46:37,581 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 21:46:37,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 21:46:37,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 21:46:37,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 21:46:37,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 21:46:37,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 21:46:37,582 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 21:46:37,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 21:46:37,582 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_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2024-11-13 21:46:37,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 21:46:37,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 21:46:37,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 21:46:37,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 21:46:37,856 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 21:46:37,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i Unable to find full path for "g++" [2024-11-13 21:46:39,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 21:46:40,139 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 21:46:40,144 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2024-11-13 21:46:40,158 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/data/6ff8f122d/4207d57713c54aac9b37a0e3443bb458/FLAGaef7e6f7f [2024-11-13 21:46:40,184 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/data/6ff8f122d/4207d57713c54aac9b37a0e3443bb458 [2024-11-13 21:46:40,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 21:46:40,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 21:46:40,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 21:46:40,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 21:46:40,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 21:46:40,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2234bab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40, skipping insertion in model container [2024-11-13 21:46:40,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,244 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 21:46:40,492 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_2db30822-9e27-4808-9e48-de7f7dd34546/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2024-11-13 21:46:40,496 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_2db30822-9e27-4808-9e48-de7f7dd34546/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2024-11-13 21:46:40,497 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_2db30822-9e27-4808-9e48-de7f7dd34546/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2024-11-13 21:46:40,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 21:46:40,509 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 21:46:40,548 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_2db30822-9e27-4808-9e48-de7f7dd34546/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2024-11-13 21:46:40,549 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_2db30822-9e27-4808-9e48-de7f7dd34546/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2024-11-13 21:46:40,550 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_2db30822-9e27-4808-9e48-de7f7dd34546/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2024-11-13 21:46:40,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 21:46:40,577 INFO L204 MainTranslator]: Completed translation [2024-11-13 21:46:40,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40 WrapperNode [2024-11-13 21:46:40,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 21:46:40,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 21:46:40,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 21:46:40,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 21:46:40,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,593 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,623 INFO L138 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 114 [2024-11-13 21:46:40,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 21:46:40,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 21:46:40,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 21:46:40,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 21:46:40,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 21:46:40,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 21:46:40,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 21:46:40,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 21:46:40,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:46:40" (1/1) ... [2024-11-13 21:46:40,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 21:46:40,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 21:46:40,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 21:46:40,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 21:46:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 21:46:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 21:46:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 21:46:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 21:46:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 21:46:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 21:46:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 21:46:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 21:46:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 21:46:40,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 21:46:40,834 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 21:46:40,836 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 21:46:41,137 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-13 21:46:41,137 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 21:46:41,236 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 21:46:41,236 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-13 21:46:41,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:46:41 BoogieIcfgContainer [2024-11-13 21:46:41,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 21:46:41,237 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 21:46:41,237 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 21:46:41,248 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 21:46:41,248 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:46:41" (1/1) ... [2024-11-13 21:46:41,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 21:46:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:46:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 22 states and 34 transitions. [2024-11-13 21:46:41,303 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2024-11-13 21:46:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 21:46:41,305 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:46:41,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:46:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:46:41,454 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 21:46:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:46:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2024-11-13 21:46:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2024-11-13 21:46:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 21:46:41,658 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:46:41,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:46:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:46:41,806 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 21:46:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:46:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 20 states and 28 transitions. [2024-11-13 21:46:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2024-11-13 21:46:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 21:46:42,260 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:46:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:46:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:46:42,648 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 21:46:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:46:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 27 states and 34 transitions. [2024-11-13 21:46:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-13 21:46:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 21:46:43,755 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:46:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:46:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:46:45,422 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 21:46:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:46:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 29 states and 39 transitions. [2024-11-13 21:46:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-11-13 21:46:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 21:46:46,498 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:46:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:46:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:46:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 21:46:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:46:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 20 states and 26 transitions. [2024-11-13 21:46:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-11-13 21:46:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 21:46:52,401 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:46:52,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:46:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:46:52,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 21:46:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:46:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:46:52,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 21:46:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:46:52,506 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-11-13 21:46:52,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 09:46:52 ImpRootNode [2024-11-13 21:46:52,528 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 21:46:52,529 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 21:46:52,529 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 21:46:52,529 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 21:46:52,529 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:46:41" (3/4) ... [2024-11-13 21:46:52,530 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 21:46:52,563 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 21:46:52,563 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 21:46:52,564 INFO L158 Benchmark]: Toolchain (without parser) took 12376.57ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 117.5MB in the beginning and 250.1MB in the end (delta: -132.6MB). Peak memory consumption was 151.3MB. Max. memory is 16.1GB. [2024-11-13 21:46:52,565 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory was 104.8MB in the beginning and 104.6MB in the end (delta: 215.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:46:52,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.93ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 99.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 21:46:52,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.57ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:46:52,566 INFO L158 Benchmark]: Boogie Preprocessor took 25.49ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 96.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:46:52,566 INFO L158 Benchmark]: RCFGBuilder took 584.23ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 74.8MB in the end (delta: 21.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 21:46:52,567 INFO L158 Benchmark]: CodeCheck took 11290.72ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 74.8MB in the beginning and 250.2MB in the end (delta: -175.4MB). Peak memory consumption was 109.3MB. Max. memory is 16.1GB. [2024-11-13 21:46:52,567 INFO L158 Benchmark]: Witness Printer took 34.83ms. Allocated memory is still 427.8MB. Free memory was 250.2MB in the beginning and 250.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:46:52,569 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 1 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11.2s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 125 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 55 mSDtfsCounter, 164 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 365 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 339 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/8 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: 1051]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={-1:0}, list={-1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1041] EXPR end->colour VAL [end={-1:0}, list={-1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={-1:0}, list={-1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={-1:0}, list={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory was 104.8MB in the beginning and 104.6MB in the end (delta: 215.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.93ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 99.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.57ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.49ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 96.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 584.23ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 74.8MB in the end (delta: 21.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 11290.72ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 74.8MB in the beginning and 250.2MB in the end (delta: -175.4MB). Peak memory consumption was 109.3MB. Max. memory is 16.1GB. * Witness Printer took 34.83ms. Allocated memory is still 427.8MB. Free memory was 250.2MB in the beginning and 250.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 21:46:52,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db30822-9e27-4808-9e48-de7f7dd34546/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