./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-1.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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/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 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 03:19:58,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 03:19:58,392 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-06 03:19:58,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 03:19:58,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 03:19:58,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 03:19:58,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 03:19:58,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 03:19:58,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 03:19:58,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 03:19:58,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 03:19:58,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 03:19:58,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 03:19:58,419 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 03:19:58,419 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 03:19:58,419 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 03:19:58,419 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 03:19:58,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 03:19:58,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 03:19:58,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 03:19:58,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 03:19:58,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 03:19:58,420 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 03:19:58,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 03:19:58,420 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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/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 -> 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 [2024-12-06 03:19:58,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 03:19:58,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 03:19:58,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 03:19:58,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 03:19:58,673 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 03:19:58,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/forester-heap/dll-circular-1.i [2024-12-06 03:20:01,314 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/data/8c81bdee8/919cd7254ffc486da0ad2a0d8f4dd885/FLAGc6d408250 [2024-12-06 03:20:01,541 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 03:20:01,541 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/sv-benchmarks/c/forester-heap/dll-circular-1.i [2024-12-06 03:20:01,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/data/8c81bdee8/919cd7254ffc486da0ad2a0d8f4dd885/FLAGc6d408250 [2024-12-06 03:20:01,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/data/8c81bdee8/919cd7254ffc486da0ad2a0d8f4dd885 [2024-12-06 03:20:01,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 03:20:01,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 03:20:01,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 03:20:01,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 03:20:01,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 03:20:01,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e1db07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01, skipping insertion in model container [2024-12-06 03:20:01,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 03:20:01,803 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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2024-12-06 03:20:01,807 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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2024-12-06 03:20:01,809 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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2024-12-06 03:20:01,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 03:20:01,820 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 03:20:01,855 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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2024-12-06 03:20:01,856 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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2024-12-06 03:20:01,858 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_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2024-12-06 03:20:01,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 03:20:01,879 INFO L204 MainTranslator]: Completed translation [2024-12-06 03:20:01,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01 WrapperNode [2024-12-06 03:20:01,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 03:20:01,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 03:20:01,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 03:20:01,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 03:20:01,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,908 INFO L138 Inliner]: procedures = 119, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 111 [2024-12-06 03:20:01,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 03:20:01,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 03:20:01,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 03:20:01,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 03:20:01,914 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,924 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 03:20:01,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 03:20:01,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 03:20:01,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 03:20:01,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:20:01" (1/1) ... [2024-12-06 03:20:01,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 03:20:01,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 03:20:01,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 03:20:01,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 03:20:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 03:20:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 03:20:02,077 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 03:20:02,079 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 03:20:02,243 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-12-06 03:20:02,243 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 03:20:02,284 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 03:20:02,285 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-06 03:20:02,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:20:02 BoogieIcfgContainer [2024-12-06 03:20:02,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 03:20:02,286 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 03:20:02,286 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 03:20:02,293 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 03:20:02,293 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:20:02" (1/1) ... [2024-12-06 03:20:02,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 03:20:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:20:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 29 states and 46 transitions. [2024-12-06 03:20:02,337 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2024-12-06 03:20:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-06 03:20:02,339 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:20:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:20:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:20:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:20:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:20:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2024-12-06 03:20:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2024-12-06 03:20:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 03:20:02,475 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:20:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:20:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:20:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:20:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:20:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 33 states and 49 transitions. [2024-12-06 03:20:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2024-12-06 03:20:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 03:20:02,785 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:20:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:20:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:20:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:20:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:20:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 37 states and 55 transitions. [2024-12-06 03:20:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2024-12-06 03:20:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 03:20:03,089 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:20:03,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:20:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:20:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:20:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:20:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 37 states and 54 transitions. [2024-12-06 03:20:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2024-12-06 03:20:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 03:20:03,259 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:20:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:20:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:20:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:20:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:20:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 41 states and 62 transitions. [2024-12-06 03:20:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 62 transitions. [2024-12-06 03:20:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-06 03:20:03,518 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:20:03,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:20:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:20:03,538 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 03:20:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:20:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:20:03,596 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 03:20:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:20:03,623 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-12-06 03:20:03,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 03:20:03 ImpRootNode [2024-12-06 03:20:03,645 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 03:20:03,646 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 03:20:03,646 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 03:20:03,646 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 03:20:03,646 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:20:02" (3/4) ... [2024-12-06 03:20:03,647 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 03:20:03,676 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 6. [2024-12-06 03:20:03,708 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 03:20:03,708 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 03:20:03,708 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 03:20:03,709 INFO L158 Benchmark]: Toolchain (without parser) took 2140.76ms. Allocated memory is still 142.6MB. Free memory was 116.1MB in the beginning and 60.7MB in the end (delta: 55.4MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2024-12-06 03:20:03,709 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:20:03,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.45ms. Allocated memory is still 142.6MB. Free memory was 115.9MB in the beginning and 98.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 03:20:03,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.43ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 96.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:20:03,710 INFO L158 Benchmark]: Boogie Preprocessor took 24.00ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:20:03,710 INFO L158 Benchmark]: RCFGBuilder took 351.57ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 78.0MB in the end (delta: 17.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-06 03:20:03,711 INFO L158 Benchmark]: CodeCheck took 1359.50ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 64.7MB in the end (delta: 13.3MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2024-12-06 03:20:03,711 INFO L158 Benchmark]: Witness Printer took 62.81ms. Allocated memory is still 142.6MB. Free memory was 64.7MB in the beginning and 60.7MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 03:20:03,713 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, 29 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 171 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 75 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 145 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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: 1034]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = head [L999] head->data = 0 [L1001] SLL* x = head; [L1002] int state = 1; VAL [head={-1:0}, state=1, x={-1:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state [L1029] EXPR head->next [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, x={-1:0}] [L1030] COND FALSE !(0) VAL [head={-1:0}, x={-1:0}] [L1032] EXPR x->data VAL [head={-1:0}, x={-1:0}] [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->data [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, x={-1:0}] [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1034] reach_error() VAL [head={-1:0}, x={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.45ms. Allocated memory is still 142.6MB. Free memory was 115.9MB in the beginning and 98.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.43ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 96.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.00ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 351.57ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 78.0MB in the end (delta: 17.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 1359.50ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 64.7MB in the end (delta: 13.3MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 62.81ms. Allocated memory is still 142.6MB. Free memory was 64.7MB in the beginning and 60.7MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 03:20:03,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25eb69ec-ba80-4c4a-9c3c-b331f7a2c82d/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