./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/splice-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm --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 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 22:46:31,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 22:46:31,994 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-13 22:46:32,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 22:46:32,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 22:46:32,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 22:46:32,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 22:46:32,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 22:46:32,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 22:46:32,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 22:46:32,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 22:46:32,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 22:46:32,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 22:46:32,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 22:46:32,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 22:46:32,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 22:46:32,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 22:46:32,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 22:46:32,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 22:46:32,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 22:46:32,062 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 22:46:32,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 22:46:32,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 22:46:32,062 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 22:46:32,062 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 22:46:32,062 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 22:46:32,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 22:46:32,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:46:32,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 22:46:32,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 22:46:32,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 22:46:32,063 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 22:46:32,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 22:46:32,064 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_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm 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 -> 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c [2024-11-13 22:46:32,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 22:46:32,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 22:46:32,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 22:46:32,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 22:46:32,473 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 22:46:32,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/list-properties/splice-1.i Unable to find full path for "g++" [2024-11-13 22:46:34,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 22:46:35,213 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 22:46:35,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/sv-benchmarks/c/list-properties/splice-1.i [2024-11-13 22:46:35,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/data/cb01f3251/ac173b49756d4298b9dde6e8e89509cd/FLAG0bc2c3295 [2024-11-13 22:46:35,248 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/data/cb01f3251/ac173b49756d4298b9dde6e8e89509cd [2024-11-13 22:46:35,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 22:46:35,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 22:46:35,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 22:46:35,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 22:46:35,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 22:46:35,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfa7954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35, skipping insertion in model container [2024-11-13 22:46:35,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 22:46:35,669 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_227bc9de-197f-446e-8ac8-a6eb8f8ac544/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2024-11-13 22:46:35,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:46:35,685 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 22:46:35,784 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_227bc9de-197f-446e-8ac8-a6eb8f8ac544/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2024-11-13 22:46:35,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:46:35,836 INFO L204 MainTranslator]: Completed translation [2024-11-13 22:46:35,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35 WrapperNode [2024-11-13 22:46:35,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 22:46:35,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 22:46:35,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 22:46:35,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 22:46:35,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,876 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,909 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 100 [2024-11-13 22:46:35,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 22:46:35,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 22:46:35,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 22:46:35,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 22:46:35,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 22:46:35,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 22:46:35,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 22:46:35,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 22:46:35,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:46:35" (1/1) ... [2024-11-13 22:46:35,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:46:35,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 22:46:35,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 22:46:35,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 22:46:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-13 22:46:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-13 22:46:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 22:46:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 22:46:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 22:46:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 22:46:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 22:46:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 22:46:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 22:46:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 22:46:36,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 22:46:36,150 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 22:46:36,153 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 22:46:36,184 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-13 22:46:36,406 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-13 22:46:36,407 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 22:46:36,473 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 22:46:36,473 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 22:46:36,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:46:36 BoogieIcfgContainer [2024-11-13 22:46:36,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 22:46:36,474 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 22:46:36,474 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 22:46:36,489 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 22:46:36,489 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:46:36" (1/1) ... [2024-11-13 22:46:36,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 22:46:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:46:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2024-11-13 22:46:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2024-11-13 22:46:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 22:46:36,572 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:46:36,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:46:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:46:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:46:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:46:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 24 states and 31 transitions. [2024-11-13 22:46:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-11-13 22:46:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 22:46:36,835 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:46:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:46:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:46:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:46:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:46:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 28 states and 37 transitions. [2024-11-13 22:46:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-13 22:46:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 22:46:37,337 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:46:37,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:46:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:46:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 22:46:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:46:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2024-11-13 22:46:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-13 22:46:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 22:46:37,937 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:46:37,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:46:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:46:38,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:46:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:46:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:46:38,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:46:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:46:38,412 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2024-11-13 22:46:38,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 10:46:38 ImpRootNode [2024-11-13 22:46:38,500 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 22:46:38,501 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 22:46:38,501 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 22:46:38,502 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 22:46:38,502 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:46:36" (3/4) ... [2024-11-13 22:46:38,504 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 22:46:38,551 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 22:46:38,551 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 22:46:38,552 INFO L158 Benchmark]: Toolchain (without parser) took 3298.97ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 86.9MB in the end (delta: 6.1MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-11-13 22:46:38,553 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 142.6MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:46:38,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.91ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 75.2MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 22:46:38,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.26ms. Allocated memory is still 117.4MB. Free memory was 75.2MB in the beginning and 73.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:46:38,554 INFO L158 Benchmark]: Boogie Preprocessor took 42.26ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 72.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:46:38,554 INFO L158 Benchmark]: RCFGBuilder took 519.73ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 54.6MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 22:46:38,555 INFO L158 Benchmark]: CodeCheck took 2026.09ms. Allocated memory is still 117.4MB. Free memory was 54.6MB in the beginning and 89.6MB in the end (delta: -35.1MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2024-11-13 22:46:38,555 INFO L158 Benchmark]: Witness Printer took 50.00ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 86.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:46:38,558 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 61 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 74 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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 - CounterExampleResult [Line: 584]: 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={26456:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={26456:0}, flag=1, p={26456:0}] [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) VAL [a={26456:0}, flag=0, p={26456:0}, t={26455:0}] [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h VAL [a={26456:0}, flag=0] [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a VAL [flag=1, l1={0:0}, l2={0:0}, p={26456:0}] [L560] EXPR p->h VAL [flag=1, l1={0:0}, l2={0:0}, p={26456:0}] [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 VAL [flag=0, l1={26456:0}, l2={0:0}, p={26455:0}] [L560] EXPR p->h VAL [flag=0, l1={26456:0}, l2={0:0}, p={26455:0}] [L560] COND FALSE !(p->h != 3) [L573] p = l1 VAL [flag=0, l2={0:0}, p={26456:0}] [L574] COND TRUE p != 0 [L575] EXPR p->h VAL [flag=0, l2={0:0}, p={26456:0}] [L575] COND TRUE p->h != 2 [L584] reach_error() VAL [flag=0, l2={0:0}, p={26456:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 142.6MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.91ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 75.2MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.26ms. Allocated memory is still 117.4MB. Free memory was 75.2MB in the beginning and 73.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.26ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 72.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 519.73ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 54.6MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2026.09ms. Allocated memory is still 117.4MB. Free memory was 54.6MB in the beginning and 89.6MB in the end (delta: -35.1MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Witness Printer took 50.00ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 86.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 22:46:38,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227bc9de-197f-446e-8ac8-a6eb8f8ac544/bin/ukojak-verify-EEHR8qb7sm/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