./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-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_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/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_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/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_c9a1d734-4d49-490b-a265-7cf9b38f84ce/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 e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 05:58:02,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 05:58:02,863 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-06 05:58:02,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 05:58:02,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 05:58:02,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 05:58:02,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 05:58:02,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 05:58:02,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 05:58:02,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 05:58:02,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 05:58:02,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 05:58:02,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 05:58:02,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 05:58:02,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 05:58:02,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 05:58:02,888 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 05:58:02,888 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 05:58:02,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 05:58:02,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:58:02,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 05:58:02,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 05:58:02,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 05:58:02,889 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 05:58:02,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 05:58:02,889 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_c9a1d734-4d49-490b-a265-7cf9b38f84ce/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 -> e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 [2024-12-06 05:58:03,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 05:58:03,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 05:58:03,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 05:58:03,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 05:58:03,135 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 05:58:03,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2024-12-06 05:58:05,722 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/data/e89d68220/a15cf2cd9d54401097f20c13d8eb002b/FLAG1e50dae0b [2024-12-06 05:58:05,973 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 05:58:05,974 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2024-12-06 05:58:05,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/data/e89d68220/a15cf2cd9d54401097f20c13d8eb002b/FLAG1e50dae0b [2024-12-06 05:58:06,303 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/data/e89d68220/a15cf2cd9d54401097f20c13d8eb002b [2024-12-06 05:58:06,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 05:58:06,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 05:58:06,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 05:58:06,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 05:58:06,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 05:58:06,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5ac3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06, skipping insertion in model container [2024-12-06 05:58:06,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 05:58:06,561 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_c9a1d734-4d49-490b-a265-7cf9b38f84ce/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2024-12-06 05:58:06,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:58:06,574 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 05:58:06,614 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_c9a1d734-4d49-490b-a265-7cf9b38f84ce/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2024-12-06 05:58:06,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:58:06,640 INFO L204 MainTranslator]: Completed translation [2024-12-06 05:58:06,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06 WrapperNode [2024-12-06 05:58:06,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 05:58:06,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 05:58:06,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 05:58:06,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 05:58:06,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,676 INFO L138 Inliner]: procedures = 126, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2024-12-06 05:58:06,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 05:58:06,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 05:58:06,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 05:58:06,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 05:58:06,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,696 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 05:58:06,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 05:58:06,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 05:58:06,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 05:58:06,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:58:06" (1/1) ... [2024-12-06 05:58:06,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:58:06,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 05:58:06,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 05:58:06,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 05:58:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-12-06 05:58:06,753 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-12-06 05:58:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 05:58:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 05:58:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 05:58:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 05:58:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-06 05:58:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-06 05:58:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 05:58:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 05:58:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 05:58:06,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 05:58:06,835 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 05:58:06,836 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 05:58:06,862 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-12-06 05:58:07,082 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-12-06 05:58:07,082 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 05:58:07,155 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 05:58:07,155 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-06 05:58:07,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:58:07 BoogieIcfgContainer [2024-12-06 05:58:07,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 05:58:07,156 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 05:58:07,156 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 05:58:07,164 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 05:58:07,164 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:58:07" (1/1) ... [2024-12-06 05:58:07,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 05:58:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:58:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 30 states and 43 transitions. [2024-12-06 05:58:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2024-12-06 05:58:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 05:58:07,220 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:58:07,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:58:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:58:07,349 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 05:58:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:58:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 41 transitions. [2024-12-06 05:58:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-12-06 05:58:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 05:58:07,395 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:58:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:58:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:58:07,593 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 05:58:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:58:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 35 states and 50 transitions. [2024-12-06 05:58:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2024-12-06 05:58:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-06 05:58:07,692 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:58:07,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:58:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:58:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:58:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:58:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 42 states and 65 transitions. [2024-12-06 05:58:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2024-12-06 05:58:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-06 05:58:08,509 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:58:08,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:58:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:58:08,529 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:58:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:58:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:58:08,595 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:58:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:58:08,638 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2024-12-06 05:58:08,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 05:58:08 ImpRootNode [2024-12-06 05:58:08,657 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 05:58:08,657 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 05:58:08,657 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 05:58:08,658 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 05:58:08,658 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:58:07" (3/4) ... [2024-12-06 05:58:08,659 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 05:58:08,688 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 7. [2024-12-06 05:58:08,723 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 05:58:08,723 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 05:58:08,723 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 05:58:08,724 INFO L158 Benchmark]: Toolchain (without parser) took 2417.87ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 31.2MB in the end (delta: 60.5MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2024-12-06 05:58:08,724 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 72.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:58:08,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.82ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 73.5MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 05:58:08,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.61ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 71.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:58:08,725 INFO L158 Benchmark]: Boogie Preprocessor took 28.48ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 69.9MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 05:58:08,725 INFO L158 Benchmark]: RCFGBuilder took 449.64ms. Allocated memory is still 117.4MB. Free memory was 69.9MB in the beginning and 41.4MB in the end (delta: 28.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-06 05:58:08,726 INFO L158 Benchmark]: CodeCheck took 1500.51ms. Allocated memory is still 117.4MB. Free memory was 41.4MB in the beginning and 35.0MB in the end (delta: 6.4MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-12-06 05:58:08,726 INFO L158 Benchmark]: Witness Printer took 65.93ms. Allocated memory is still 117.4MB. Free memory was 35.0MB in the beginning and 31.2MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:58:08,728 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 41 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L596] List a = (List) malloc(sizeof(struct node)); [L597] COND FALSE !(a == 0) VAL [a={-1:0}] [L598] List t; [L599] List p = a; [L600] a->h = 2 VAL [a={-1:0}, p={-1:0}] [L601] COND TRUE __VERIFIER_nondet_int() [L602] p->h = 1 [L603] t = (List) malloc(sizeof(struct node)) [L604] COND FALSE !(t == 0) VAL [a={-1:0}, p={-1:0}, t={28764:0}] [L605] p->n = t [L606] EXPR p->n [L606] p = p->n [L601] COND FALSE !(__VERIFIER_nondet_int()) [L608] p->h = 2 [L609] p->n = 0 [L610] p = a VAL [p={-1:0}] [L611] COND TRUE p!=0 [L612] EXPR p->h VAL [p={-1:0}] [L612] COND TRUE p->h != 2 [L613] reach_error() VAL [p={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 72.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.82ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 73.5MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.61ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 71.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.48ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 69.9MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 449.64ms. Allocated memory is still 117.4MB. Free memory was 69.9MB in the beginning and 41.4MB in the end (delta: 28.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 1500.51ms. Allocated memory is still 117.4MB. Free memory was 41.4MB in the beginning and 35.0MB in the end (delta: 6.4MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Witness Printer took 65.93ms. Allocated memory is still 117.4MB. Free memory was 35.0MB in the beginning and 31.2MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 05:58:08,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9a1d734-4d49-490b-a265-7cf9b38f84ce/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