./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list_flag-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/list_flag-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk --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 643182475b6f3736876ef9d58257e821498e53d566e4d81dd06a8f042f299e0b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 22:19:35,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 22:19:35,831 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-08 22:19:35,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 22:19:35,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 22:19:35,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 22:19:35,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 22:19:35,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 22:19:35,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 22:19:35,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 22:19:35,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 22:19:35,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 22:19:35,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 22:19:35,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 22:19:35,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 22:19:35,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 22:19:35,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 22:19:35,891 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 22:19:35,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 22:19:35,891 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 22:19:35,892 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 22:19:35,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 22:19:35,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 22:19:35,896 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 22:19:35,896 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 22:19:35,897 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 22:19:35,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 22:19:35,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:19:35,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 22:19:35,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 22:19:35,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 22:19:35,898 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 22:19:35,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 22:19:35,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 643182475b6f3736876ef9d58257e821498e53d566e4d81dd06a8f042f299e0b [2024-11-08 22:19:36,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 22:19:36,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 22:19:36,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 22:19:36,199 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 22:19:36,200 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 22:19:36,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/list-properties/list_flag-1.i Unable to find full path for "g++" [2024-11-08 22:19:38,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 22:19:38,542 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 22:19:38,543 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/sv-benchmarks/c/list-properties/list_flag-1.i [2024-11-08 22:19:38,567 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/data/5533b4666/aba0e7f9ed364ffbb76ac03a35e89790/FLAG963d3dd80 [2024-11-08 22:19:38,885 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/data/5533b4666/aba0e7f9ed364ffbb76ac03a35e89790 [2024-11-08 22:19:38,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 22:19:38,890 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 22:19:38,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 22:19:38,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 22:19:38,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 22:19:38,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:19:38" (1/1) ... [2024-11-08 22:19:38,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433e9f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:38, skipping insertion in model container [2024-11-08 22:19:38,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:19:38" (1/1) ... [2024-11-08 22:19:38,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 22:19:39,294 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_adf9b697-8dbc-459a-88fb-00568e3be031/sv-benchmarks/c/list-properties/list_flag-1.i[23375,23388] [2024-11-08 22:19:39,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:19:39,313 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 22:19:39,387 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_adf9b697-8dbc-459a-88fb-00568e3be031/sv-benchmarks/c/list-properties/list_flag-1.i[23375,23388] [2024-11-08 22:19:39,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:19:39,427 INFO L204 MainTranslator]: Completed translation [2024-11-08 22:19:39,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39 WrapperNode [2024-11-08 22:19:39,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 22:19:39,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 22:19:39,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 22:19:39,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 22:19:39,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,468 INFO L138 Inliner]: procedures = 124, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2024-11-08 22:19:39,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 22:19:39,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 22:19:39,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 22:19:39,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 22:19:39,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 22:19:39,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 22:19:39,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 22:19:39,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 22:19:39,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:19:39,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 22:19:39,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 22:19:39,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 22:19:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-08 22:19:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-08 22:19:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 22:19:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 22:19:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 22:19:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 22:19:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-08 22:19:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-08 22:19:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 22:19:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 22:19:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 22:19:39,680 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 22:19:39,683 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 22:19:39,711 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-08 22:19:39,855 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-08 22:19:39,855 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 22:19:39,908 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 22:19:39,908 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 22:19:39,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:19:39 BoogieIcfgContainer [2024-11-08 22:19:39,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 22:19:39,910 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 22:19:39,910 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 22:19:39,936 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 22:19:39,937 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:19:39" (1/1) ... [2024-11-08 22:19:39,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 22:19:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:19:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 23 states and 32 transitions. [2024-11-08 22:19:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2024-11-08 22:19:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 22:19:40,003 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:19:40,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:19:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:19:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:19:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:19:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 23 states and 28 transitions. [2024-11-08 22:19:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-08 22:19:40,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 22:19:40,194 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:19:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:19:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:19:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:19:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:19:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 31 states and 43 transitions. [2024-11-08 22:19:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2024-11-08 22:19:40,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 22:19:40,714 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:19:40,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:19:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:19:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:19:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:19:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 33 states and 47 transitions. [2024-11-08 22:19:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2024-11-08 22:19:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 22:19:40,925 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:19:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:19:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:19:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:19:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:19:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 33 states and 45 transitions. [2024-11-08 22:19:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2024-11-08 22:19:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 22:19:41,243 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:19:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:19:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:19:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:19:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:19:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 33 states and 43 transitions. [2024-11-08 22:19:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-08 22:19:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 22:19:41,541 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:19:41,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:19:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:19:41,572 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:19:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:19:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:19:41,715 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:19:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:19:41,754 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-11-08 22:19:41,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 10:19:41 ImpRootNode [2024-11-08 22:19:41,794 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 22:19:41,795 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 22:19:41,795 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 22:19:41,795 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 22:19:41,795 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:19:39" (3/4) ... [2024-11-08 22:19:41,797 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 22:19:41,851 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 22:19:41,851 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 22:19:41,856 INFO L158 Benchmark]: Toolchain (without parser) took 2966.19ms. Allocated memory is still 167.8MB. Free memory was 130.7MB in the beginning and 112.9MB in the end (delta: 17.7MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2024-11-08 22:19:41,856 INFO L158 Benchmark]: CDTParser took 1.58ms. Allocated memory is still 111.1MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:19:41,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.96ms. Allocated memory is still 167.8MB. Free memory was 130.7MB in the beginning and 111.1MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 22:19:41,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.56ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:19:41,858 INFO L158 Benchmark]: Boogie Preprocessor took 30.26ms. Allocated memory is still 167.8MB. Free memory was 109.6MB in the beginning and 108.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:19:41,858 INFO L158 Benchmark]: RCFGBuilder took 409.29ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 93.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 22:19:41,861 INFO L158 Benchmark]: CodeCheck took 1883.90ms. Allocated memory is still 167.8MB. Free memory was 93.4MB in the beginning and 115.0MB in the end (delta: -21.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:19:41,862 INFO L158 Benchmark]: Witness Printer took 56.72ms. Allocated memory is still 167.8MB. Free memory was 115.0MB in the beginning and 112.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:19:41,864 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154 IncrementalHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 125 mSDtfsCounter, 154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 432 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={15092:0}, flag=0] [L536] p = a VAL [a={15092:0}, flag=0, p={15092:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND FALSE !(\read(flag)) [L541] p->h = 2 [L543] t = (List) malloc(sizeof(struct node)) [L544] COND FALSE !(t == 0) VAL [a={15092:0}, flag=0, p={15092:0}, t={-1:0}] [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a VAL [flag=0, p={15092:0}] [L550] COND FALSE !(\read(flag)) VAL [p={15092:0}] [L554] EXPR p->h VAL [p={15092:0}] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.58ms. Allocated memory is still 111.1MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.96ms. Allocated memory is still 167.8MB. Free memory was 130.7MB in the beginning and 111.1MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.56ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.26ms. Allocated memory is still 167.8MB. Free memory was 109.6MB in the beginning and 108.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.29ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 93.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 1883.90ms. Allocated memory is still 167.8MB. Free memory was 93.4MB in the beginning and 115.0MB in the end (delta: -21.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 56.72ms. Allocated memory is still 167.8MB. Free memory was 115.0MB in the beginning and 112.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 22:19:41,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adf9b697-8dbc-459a-88fb-00568e3be031/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, 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