./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/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_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/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_e89f0b89-b476-468f-a62d-6c290cac933e/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 f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 22:27:13,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 22:27:13,319 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-08 22:27:13,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 22:27:13,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 22:27:13,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 22:27:13,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 22:27:13,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 22:27:13,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 22:27:13,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 22:27:13,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 22:27:13,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 22:27:13,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 22:27:13,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 22:27:13,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 22:27:13,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 22:27:13,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 22:27:13,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 22:27:13,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 22:27:13,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 22:27:13,368 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 22:27:13,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 22:27:13,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 22:27:13,370 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 22:27:13,370 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 22:27:13,371 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 22:27:13,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 22:27:13,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:27:13,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 22:27:13,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 22:27:13,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 22:27:13,373 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 22:27:13,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 22:27:13,374 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_e89f0b89-b476-468f-a62d-6c290cac933e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 [2024-11-08 22:27:13,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 22:27:13,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 22:27:13,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 22:27:13,655 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 22:27:13,656 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 22:27:13,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/list-properties/alternating_list-2.i Unable to find full path for "g++" [2024-11-08 22:27:15,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 22:27:15,940 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 22:27:15,944 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/sv-benchmarks/c/list-properties/alternating_list-2.i [2024-11-08 22:27:15,962 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/data/cc0e054d5/2ed36d3d85ec4ff28e85d05f2161af75/FLAG7ef0990a5 [2024-11-08 22:27:15,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/data/cc0e054d5/2ed36d3d85ec4ff28e85d05f2161af75 [2024-11-08 22:27:15,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 22:27:15,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 22:27:15,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 22:27:15,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 22:27:15,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 22:27:15,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:27:15" (1/1) ... [2024-11-08 22:27:15,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3064863f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:15, skipping insertion in model container [2024-11-08 22:27:15,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:27:15" (1/1) ... [2024-11-08 22:27:16,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 22:27:16,413 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_e89f0b89-b476-468f-a62d-6c290cac933e/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2024-11-08 22:27:16,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:27:16,428 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 22:27:16,488 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_e89f0b89-b476-468f-a62d-6c290cac933e/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2024-11-08 22:27:16,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:27:16,521 INFO L204 MainTranslator]: Completed translation [2024-11-08 22:27:16,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16 WrapperNode [2024-11-08 22:27:16,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 22:27:16,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 22:27:16,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 22:27:16,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 22:27:16,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,561 INFO L138 Inliner]: procedures = 124, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-11-08 22:27:16,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 22:27:16,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 22:27:16,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 22:27:16,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 22:27:16,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 22:27:16,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 22:27:16,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 22:27:16,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 22:27:16,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:16,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:27:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 22:27:16,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 22:27:16,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 22:27:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-08 22:27:16,668 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-08 22:27:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 22:27:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 22:27:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 22:27:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 22:27:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-08 22:27:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-08 22:27:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 22:27:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 22:27:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 22:27:16,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 22:27:16,769 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 22:27:16,771 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 22:27:16,793 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-08 22:27:16,924 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-08 22:27:16,924 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 22:27:16,985 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 22:27:16,985 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 22:27:16,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:27:16 BoogieIcfgContainer [2024-11-08 22:27:16,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 22:27:16,987 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 22:27:16,987 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 22:27:17,010 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 22:27:17,010 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:27:16" (1/1) ... [2024-11-08 22:27:17,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 22:27:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:27:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2024-11-08 22:27:17,068 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2024-11-08 22:27:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 22:27:17,070 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:27:17,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:27:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:27:17,235 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 22:27:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:27:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2024-11-08 22:27:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-08 22:27:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 22:27:17,269 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:27:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:27:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:27:17,626 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 22:27:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:27:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 31 states and 41 transitions. [2024-11-08 22:27:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2024-11-08 22:27:17,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 22:27:17,716 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:27:17,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:27:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:27:17,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:27:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:27:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:27:17,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:27:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:27:17,928 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2024-11-08 22:27:17,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 10:27:17 ImpRootNode [2024-11-08 22:27:17,972 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 22:27:17,973 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 22:27:17,974 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 22:27:17,974 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 22:27:17,975 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:27:16" (3/4) ... [2024-11-08 22:27:17,975 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 22:27:18,039 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 22:27:18,039 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 22:27:18,040 INFO L158 Benchmark]: Toolchain (without parser) took 2060.27ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 80.1MB in the beginning and 74.5MB in the end (delta: 5.6MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2024-11-08 22:27:18,040 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 63.3MB in the end (delta: 79.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:27:18,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.56ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 60.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 22:27:18,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.62ms. Allocated memory is still 117.4MB. Free memory was 60.3MB in the beginning and 58.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:27:18,042 INFO L158 Benchmark]: Boogie Preprocessor took 41.18ms. Allocated memory is still 117.4MB. Free memory was 58.2MB in the beginning and 56.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:27:18,046 INFO L158 Benchmark]: RCFGBuilder took 381.75ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 56.6MB in the beginning and 115.6MB in the end (delta: -59.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2024-11-08 22:27:18,046 INFO L158 Benchmark]: CodeCheck took 985.43ms. Allocated memory is still 146.8MB. Free memory was 115.6MB in the beginning and 76.5MB in the end (delta: 39.1MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2024-11-08 22:27:18,047 INFO L158 Benchmark]: Witness Printer took 66.68ms. Allocated memory is still 146.8MB. Free memory was 76.5MB in the beginning and 74.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:27:18,049 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 38 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - CounterExampleResult [Line: 573]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 2 [L540] flag = 0 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] flag = 1 VAL [a={-1:0}, flag=1, p={-1:0}] [L553] EXPR p->h VAL [a={-1:0}, flag=1, p={-1:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}] [L556] COND TRUE p->h != 1 [L573] reach_error() VAL [a={-1:0}, flag=0, p={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 63.3MB in the end (delta: 79.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 540.56ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 60.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.62ms. Allocated memory is still 117.4MB. Free memory was 60.3MB in the beginning and 58.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.18ms. Allocated memory is still 117.4MB. Free memory was 58.2MB in the beginning and 56.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.75ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 56.6MB in the beginning and 115.6MB in the end (delta: -59.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * CodeCheck took 985.43ms. Allocated memory is still 146.8MB. Free memory was 115.6MB in the beginning and 76.5MB in the end (delta: 39.1MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * Witness Printer took 66.68ms. Allocated memory is still 146.8MB. Free memory was 76.5MB in the beginning and 74.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 22:27:18,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e89f0b89-b476-468f-a62d-6c290cac933e/bin/ukojak-verify-ImItNfHLgk/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