./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-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_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/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_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/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_fb726ed4-9be1-42a0-94b8-99209d347a21/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 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 22:10:12,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 22:10:12,864 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-13 22:10:12,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 22:10:12,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 22:10:12,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 22:10:12,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 22:10:12,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 22:10:12,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 22:10:12,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 22:10:12,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 22:10:12,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 22:10:12,904 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 22:10:12,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 22:10:12,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 22:10:12,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 22:10:12,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 22:10:12,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 22:10:12,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 22:10:12,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 22:10:12,906 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 22:10:12,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 22:10:12,906 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 22:10:12,906 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 22:10:12,907 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 22:10:12,907 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 22:10:12,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 22:10:12,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:10:12,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 22:10:12,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 22:10:12,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 22:10:12,908 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 22:10:12,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 22:10:12,908 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_fb726ed4-9be1-42a0-94b8-99209d347a21/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 -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2024-11-13 22:10:13,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 22:10:13,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 22:10:13,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 22:10:13,276 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 22:10:13,277 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 22:10:13,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i Unable to find full path for "g++" [2024-11-13 22:10:15,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 22:10:15,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 22:10:15,698 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2024-11-13 22:10:15,714 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/data/9493995b8/fcd7e87faf174cecbadc53ffe9092d6b/FLAGfe204f3a6 [2024-11-13 22:10:15,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/data/9493995b8/fcd7e87faf174cecbadc53ffe9092d6b [2024-11-13 22:10:15,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 22:10:15,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 22:10:15,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 22:10:15,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 22:10:15,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 22:10:15,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:10:15" (1/1) ... [2024-11-13 22:10:15,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525a6591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:15, skipping insertion in model container [2024-11-13 22:10:15,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:10:15" (1/1) ... [2024-11-13 22:10:15,791 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 22:10:16,198 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_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2024-11-13 22:10:16,203 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_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2024-11-13 22:10:16,205 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_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2024-11-13 22:10:16,206 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_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2024-11-13 22:10:16,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:10:16,221 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 22:10:16,265 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_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2024-11-13 22:10:16,266 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_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2024-11-13 22:10:16,267 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_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2024-11-13 22:10:16,268 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_fb726ed4-9be1-42a0-94b8-99209d347a21/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2024-11-13 22:10:16,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:10:16,306 INFO L204 MainTranslator]: Completed translation [2024-11-13 22:10:16,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16 WrapperNode [2024-11-13 22:10:16,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 22:10:16,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 22:10:16,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 22:10:16,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 22:10:16,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,348 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2024-11-13 22:10:16,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 22:10:16,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 22:10:16,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 22:10:16,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 22:10:16,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 22:10:16,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 22:10:16,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 22:10:16,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 22:10:16,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:10:16" (1/1) ... [2024-11-13 22:10:16,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:10:16,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 22:10:16,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 22:10:16,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 22:10:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 22:10:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 22:10:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 22:10:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 22:10:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 22:10:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 22:10:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 22:10:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 22:10:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 22:10:16,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 22:10:16,583 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 22:10:16,586 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 22:10:16,961 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-13 22:10:16,961 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 22:10:17,099 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 22:10:17,100 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-13 22:10:17,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:10:17 BoogieIcfgContainer [2024-11-13 22:10:17,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 22:10:17,101 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 22:10:17,101 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 22:10:17,116 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 22:10:17,116 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:10:17" (1/1) ... [2024-11-13 22:10:17,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 22:10:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 27 states and 43 transitions. [2024-11-13 22:10:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2024-11-13 22:10:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 22:10:17,206 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:17,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:17,412 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 22:10:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2024-11-13 22:10:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2024-11-13 22:10:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 22:10:17,499 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:17,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:17,758 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 22:10:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 25 states and 37 transitions. [2024-11-13 22:10:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2024-11-13 22:10:17,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 22:10:17,909 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:17,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:18,202 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 22:10:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 32 states and 43 transitions. [2024-11-13 22:10:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2024-11-13 22:10:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 22:10:18,725 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:19,924 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 22:10:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 34 states and 48 transitions. [2024-11-13 22:10:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2024-11-13 22:10:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 22:10:20,478 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:20,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:22,706 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 22:10:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2024-11-13 22:10:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2024-11-13 22:10:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 22:10:24,104 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:24,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:24,243 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 22:10:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 36 transitions. [2024-11-13 22:10:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2024-11-13 22:10:24,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 22:10:24,553 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:24,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:10:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2024-11-13 22:10:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-11-13 22:10:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 22:10:27,218 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:27,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:10:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 51 states and 83 transitions. [2024-11-13 22:10:37,899 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 83 transitions. [2024-11-13 22:10:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 22:10:37,899 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:37,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 22:10:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 55 states and 97 transitions. [2024-11-13 22:10:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 97 transitions. [2024-11-13 22:10:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 22:10:42,152 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:42,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:10:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:10:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:10:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 53 states and 98 transitions. [2024-11-13 22:10:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 98 transitions. [2024-11-13 22:10:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 22:10:54,539 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:10:54,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:10:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:10:54,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:10:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:10:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:10:55,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:10:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:10:55,243 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2024-11-13 22:10:55,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 10:10:55 ImpRootNode [2024-11-13 22:10:55,278 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 22:10:55,279 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 22:10:55,279 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 22:10:55,280 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 22:10:55,280 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:10:17" (3/4) ... [2024-11-13 22:10:55,281 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 22:10:55,329 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 22:10:55,330 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 22:10:55,331 INFO L158 Benchmark]: Toolchain (without parser) took 39592.10ms. Allocated memory was 117.4MB in the beginning and 385.9MB in the end (delta: 268.4MB). Free memory was 90.8MB in the beginning and 168.4MB in the end (delta: -77.5MB). Peak memory consumption was 191.2MB. Max. memory is 16.1GB. [2024-11-13 22:10:55,331 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:10:55,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.44ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 73.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 22:10:55,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.27ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 71.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:10:55,333 INFO L158 Benchmark]: Boogie Preprocessor took 30.96ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 70.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 22:10:55,333 INFO L158 Benchmark]: RCFGBuilder took 719.81ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 50.7MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 22:10:55,334 INFO L158 Benchmark]: CodeCheck took 38177.48ms. Allocated memory was 117.4MB in the beginning and 385.9MB in the end (delta: 268.4MB). Free memory was 50.7MB in the beginning and 172.9MB in the end (delta: -122.1MB). Peak memory consumption was 149.2MB. Max. memory is 16.1GB. [2024-11-13 22:10:55,336 INFO L158 Benchmark]: Witness Printer took 50.75ms. Allocated memory is still 385.9MB. Free memory was 172.9MB in the beginning and 168.4MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:10:55,339 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, 27 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 38.1s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 686 SdHoareTripleChecker+Valid, 12.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 651 SdHoareTripleChecker+Invalid, 11.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 506 mSDsCounter, 265 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1211 IncrementalHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 265 mSolverCounterUnsat, 145 mSDtfsCounter, 1211 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1310 GetRequests, 1056 SyntacticMatches, 20 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23275 ImplicationChecksByTransitivity, 26.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 2266 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 7/29 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: 1050]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1005] SLL* null = malloc(sizeof(SLL)); [L1006] null->colour = BLACK [L1007] null->next = ((void*)0) [L1009] SLL* list = malloc(sizeof(SLL)); [L1010] list->next = null [L1011] list->colour = BLACK [L1013] SLL* end = list; VAL [end={39796:0}, list={39796:0}, null={39795:0}] [L1016] COND TRUE __VERIFIER_nondet_int() [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1029] end->colour = RED [L1030] end->next = malloc(sizeof(SLL)) [L1031] EXPR end->next [L1031] end = end->next [L1032] end->next = null [L1033] end->colour = BLACK VAL [end={-1:0}, list={39796:0}, null={39795:0}] [L1016] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={39796:0}, list={39796:0}, null={39795:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={39796:0}, list={39796:0}, null={39795:0}] [L1042] EXPR end->colour VAL [end={39796:0}, list={39796:0}, null={39795:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1044] COND TRUE null != end [L1046] EXPR end->colour VAL [end={39796:0}, list={39796:0}, null={39795:0}] [L1046] COND FALSE !(RED == end->colour) [L1053] EXPR end->next [L1053] end = end->next [L1044] COND TRUE null != end [L1046] EXPR end->colour VAL [end={-2:0}, list={39796:0}, null={39795:0}] [L1046] COND TRUE RED == end->colour [L1048] EXPR end->next [L1048] end = end->next [L1049] COND FALSE !(!(null != end)) VAL [end={-1:0}, list={39796:0}, null={39795:0}] [L1050] EXPR end->colour VAL [end={-1:0}, list={39796:0}, null={39795:0}] [L1050] COND TRUE !(BLACK != end->colour) [L1050] reach_error() VAL [end={-1:0}, list={39796:0}, null={39795:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.44ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 73.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.27ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 71.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.96ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 70.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 719.81ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 50.7MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 38177.48ms. Allocated memory was 117.4MB in the beginning and 385.9MB in the end (delta: 268.4MB). Free memory was 50.7MB in the beginning and 172.9MB in the end (delta: -122.1MB). Peak memory consumption was 149.2MB. Max. memory is 16.1GB. * Witness Printer took 50.75ms. Allocated memory is still 385.9MB. Free memory was 172.9MB in the beginning and 168.4MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 22:10:55,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb726ed4-9be1-42a0-94b8-99209d347a21/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