./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 21:32:41,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 21:32:42,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-05 21:32:42,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 21:32:42,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 21:32:42,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 21:32:42,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 21:32:42,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 21:32:42,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 21:32:42,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 21:32:42,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 21:32:42,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 21:32:42,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 21:32:42,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 21:32:42,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 21:32:42,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 21:32:42,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 21:32:42,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 21:32:42,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 21:32:42,093 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 21:32:42,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 21:32:42,093 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 21:32:42,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 21:32:42,093 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 21:32:42,093 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 21:32:42,093 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 21:32:42,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 21:32:42,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 21:32:42,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 21:32:42,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 21:32:42,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 21:32:42,094 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 21:32:42,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 21:32:42,094 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_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2024-12-05 21:32:42,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 21:32:42,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 21:32:42,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 21:32:42,386 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 21:32:42,386 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 21:32:42,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2024-12-05 21:32:45,890 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/data/31a2cda6f/53a99cf3f7e74df0a8e0b011429d78af/FLAG5802dae8a [2024-12-05 21:32:46,166 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 21:32:46,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2024-12-05 21:32:46,184 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/data/31a2cda6f/53a99cf3f7e74df0a8e0b011429d78af/FLAG5802dae8a [2024-12-05 21:32:46,202 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/data/31a2cda6f/53a99cf3f7e74df0a8e0b011429d78af [2024-12-05 21:32:46,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 21:32:46,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 21:32:46,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 21:32:46,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 21:32:46,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 21:32:46,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1469549f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46, skipping insertion in model container [2024-12-05 21:32:46,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 21:32:46,584 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_9c1bb3d6-e97e-4d00-9208-0f1143a15215/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2024-12-05 21:32:46,589 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_9c1bb3d6-e97e-4d00-9208-0f1143a15215/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2024-12-05 21:32:46,591 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_9c1bb3d6-e97e-4d00-9208-0f1143a15215/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2024-12-05 21:32:46,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 21:32:46,607 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 21:32:46,648 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_9c1bb3d6-e97e-4d00-9208-0f1143a15215/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2024-12-05 21:32:46,649 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_9c1bb3d6-e97e-4d00-9208-0f1143a15215/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2024-12-05 21:32:46,651 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_9c1bb3d6-e97e-4d00-9208-0f1143a15215/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2024-12-05 21:32:46,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 21:32:46,686 INFO L204 MainTranslator]: Completed translation [2024-12-05 21:32:46,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46 WrapperNode [2024-12-05 21:32:46,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 21:32:46,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 21:32:46,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 21:32:46,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 21:32:46,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,730 INFO L138 Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 107 [2024-12-05 21:32:46,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 21:32:46,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 21:32:46,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 21:32:46,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 21:32:46,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,755 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 21:32:46,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 21:32:46,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 21:32:46,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 21:32:46,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:32:46" (1/1) ... [2024-12-05 21:32:46,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 21:32:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 21:32:46,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 21:32:46,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 21:32:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-05 21:32:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-05 21:32:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-05 21:32:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 21:32:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-05 21:32:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-05 21:32:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 21:32:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 21:32:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 21:32:46,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 21:32:46,966 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 21:32:46,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 21:32:47,174 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-12-05 21:32:47,174 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 21:32:47,259 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 21:32:47,259 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-05 21:32:47,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:32:47 BoogieIcfgContainer [2024-12-05 21:32:47,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 21:32:47,260 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 21:32:47,261 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 21:32:47,272 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 21:32:47,273 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:32:47" (1/1) ... [2024-12-05 21:32:47,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 21:32:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:32:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 22 states and 34 transitions. [2024-12-05 21:32:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2024-12-05 21:32:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-05 21:32:47,344 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:32:47,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:32:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:32:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:32:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:32:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2024-12-05 21:32:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2024-12-05 21:32:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-05 21:32:47,547 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:32:47,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:32:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:32:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:32:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:32:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 20 states and 28 transitions. [2024-12-05 21:32:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2024-12-05 21:32:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-05 21:32:47,813 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:32:47,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:32:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:32:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:32:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:32:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 27 states and 34 transitions. [2024-12-05 21:32:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-12-05 21:32:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-05 21:32:48,500 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:32:48,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:32:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:32:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:32:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:32:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 29 states and 39 transitions. [2024-12-05 21:32:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-12-05 21:32:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-05 21:32:49,745 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:32:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:32:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:32:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:32:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:32:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 20 states and 26 transitions. [2024-12-05 21:32:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-12-05 21:32:51,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-05 21:32:51,768 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:32:51,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:32:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 21:32:51,784 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 21:32:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 21:32:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 21:32:51,850 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 21:32:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 21:32:51,883 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-12-05 21:32:51,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 09:32:51 ImpRootNode [2024-12-05 21:32:51,914 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 21:32:51,915 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 21:32:51,915 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 21:32:51,915 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 21:32:51,916 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:32:47" (3/4) ... [2024-12-05 21:32:51,917 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-05 21:32:51,962 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 9. [2024-12-05 21:32:52,016 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 21:32:52,017 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 21:32:52,017 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 21:32:52,018 INFO L158 Benchmark]: Toolchain (without parser) took 5811.41ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 115.5MB in the beginning and 205.6MB in the end (delta: -90.1MB). Peak memory consumption was 92.5MB. Max. memory is 16.1GB. [2024-12-05 21:32:52,019 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 21:32:52,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.93ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 97.8MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 21:32:52,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.72ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 21:32:52,020 INFO L158 Benchmark]: Boogie Preprocessor took 35.11ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 94.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 21:32:52,020 INFO L158 Benchmark]: RCFGBuilder took 492.08ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 74.7MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 21:32:52,021 INFO L158 Benchmark]: CodeCheck took 4653.78ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 74.7MB in the beginning and 212.0MB in the end (delta: -137.3MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. [2024-12-05 21:32:52,021 INFO L158 Benchmark]: Witness Printer took 102.40ms. Allocated memory is still 327.2MB. Free memory was 212.0MB in the beginning and 205.6MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 21:32:52,023 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: 4.6s, 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, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 125 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 161 IncrementalHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 55 mSDtfsCounter, 161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 315 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 341 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, ConComCheckerStatistics: No data available - CounterExampleResult [Line: 1049]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; VAL [end={3:0}, list={3:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={3:0}, list={3:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={3:0}, list={3:0}] [L1038] COND FALSE !(0) VAL [end={3:0}, list={3:0}] [L1039] EXPR end->colour VAL [end={3:0}, list={3:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1039] COND FALSE !(0) VAL [end={3:0}, list={3:0}] [L1041] COND TRUE ((void*)0) != end [L1043] EXPR end->colour [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={3:0}, list={3:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={3:0}, list={3:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 478.93ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 97.8MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.72ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.11ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 94.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 492.08ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 74.7MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 4653.78ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 74.7MB in the beginning and 212.0MB in the end (delta: -137.3MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. * Witness Printer took 102.40ms. Allocated memory is still 327.2MB. Free memory was 212.0MB in the beginning and 205.6MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-05 21:32:52,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c1bb3d6-e97e-4d00-9208-0f1143a15215/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE