./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/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_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 20:36:23,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 20:36:23,952 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-11-13 20:36:23,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 20:36:23,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 20:36:23,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 20:36:23,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 20:36:23,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 20:36:23,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 20:36:23,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 20:36:23,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 20:36:23,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 20:36:23,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 20:36:23,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 20:36:23,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 20:36:23,981 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 20:36:23,981 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 20:36:23,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 20:36:23,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 20:36:23,981 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 20:36:23,981 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 20:36:23,982 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 20:36:23,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 20:36:23,982 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 20:36:23,982 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 20:36:23,982 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 20:36:23,982 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 20:36:23,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 20:36:23,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 20:36:23,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 20:36:23,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 20:36:23,983 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 20:36:23,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 20:36:23,983 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_ac916d31-18e2-48d0-a560-9637068d9f82/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 valid-memcleanup) ) 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 [2024-11-13 20:36:24,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 20:36:24,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 20:36:24,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 20:36:24,283 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 20:36:24,285 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 20:36:24,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/list-properties/alternating_list-2.i Unable to find full path for "g++" [2024-11-13 20:36:26,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 20:36:26,546 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 20:36:26,546 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/sv-benchmarks/c/list-properties/alternating_list-2.i [2024-11-13 20:36:26,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/data/db76f4e21/5bfc8bbb2a194fb2830fc9a73bd5f845/FLAG91f052d84 [2024-11-13 20:36:26,588 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/data/db76f4e21/5bfc8bbb2a194fb2830fc9a73bd5f845 [2024-11-13 20:36:26,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 20:36:26,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 20:36:26,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 20:36:26,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 20:36:26,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 20:36:26,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 08:36:26" (1/1) ... [2024-11-13 20:36:26,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5427e123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:26, skipping insertion in model container [2024-11-13 20:36:26,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 08:36:26" (1/1) ... [2024-11-13 20:36:26,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 20:36:27,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 20:36:27,041 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 20:36:27,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 20:36:27,109 INFO L204 MainTranslator]: Completed translation [2024-11-13 20:36:27,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27 WrapperNode [2024-11-13 20:36:27,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 20:36:27,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 20:36:27,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 20:36:27,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 20:36:27,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,162 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2024-11-13 20:36:27,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 20:36:27,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 20:36:27,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 20:36:27,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 20:36:27,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 20:36:27,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 20:36:27,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 20:36:27,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 20:36:27,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 20:36:27,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 20:36:27,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 20:36:27,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 20:36:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 20:36:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 20:36:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 20:36:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 20:36:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 20:36:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 20:36:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 20:36:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 20:36:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 20:36:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 20:36:27,392 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 20:36:27,394 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 20:36:27,576 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-13 20:36:27,576 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 20:36:27,632 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 20:36:27,633 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 20:36:27,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:36:27 BoogieIcfgContainer [2024-11-13 20:36:27,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 20:36:27,634 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 20:36:27,634 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 20:36:27,645 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 20:36:27,645 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:36:27" (1/1) ... [2024-11-13 20:36:27,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 20:36:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:36:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 26 states and 37 transitions. [2024-11-13 20:36:27,713 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2024-11-13 20:36:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 20:36:27,715 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:36:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:36:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:36:27,852 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 20:36:27,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:36:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2024-11-13 20:36:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-13 20:36:27,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 20:36:27,888 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:36:27,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:36:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:36:28,251 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 20:36:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:36:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 36 states and 49 transitions. [2024-11-13 20:36:28,421 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2024-11-13 20:36:28,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 20:36:28,422 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:36:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:36:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:36:28,693 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 20:36:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:36:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 40 states and 55 transitions. [2024-11-13 20:36:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2024-11-13 20:36:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 20:36:29,156 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:36:29,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:36:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:36:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 20:36:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:36:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 45 states and 63 transitions. [2024-11-13 20:36:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2024-11-13 20:36:30,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 20:36:30,362 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:36:30,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:36:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:36:30,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 20:36:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:36:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:36:30,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 20:36:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 20:36:30,501 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2024-11-13 20:36:30,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 08:36:30 ImpRootNode [2024-11-13 20:36:30,527 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 20:36:30,528 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 20:36:30,528 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 20:36:30,528 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 20:36:30,529 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:36:27" (3/4) ... [2024-11-13 20:36:30,529 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 20:36:30,566 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 20:36:30,566 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 20:36:30,567 INFO L158 Benchmark]: Toolchain (without parser) took 3972.53ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 85.6MB in the end (delta: 6.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-11-13 20:36:30,567 INFO L158 Benchmark]: CDTParser took 0.98ms. Allocated memory is still 117.4MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:36:30,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.33ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 74.6MB in the end (delta: 17.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 20:36:30,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.25ms. Allocated memory is still 117.4MB. Free memory was 74.4MB in the beginning and 72.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:36:30,568 INFO L158 Benchmark]: Boogie Preprocessor took 30.06ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 71.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:36:30,568 INFO L158 Benchmark]: RCFGBuilder took 439.92ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 57.5MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 20:36:30,569 INFO L158 Benchmark]: CodeCheck took 2893.06ms. Allocated memory is still 117.4MB. Free memory was 57.5MB in the beginning and 87.4MB in the end (delta: -29.9MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2024-11-13 20:36:30,569 INFO L158 Benchmark]: Witness Printer took 38.24ms. Allocated memory is still 117.4MB. Free memory was 87.4MB in the beginning and 85.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 20:36:30,571 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 26 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 208 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 156 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 104 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List p = a; VAL [a={23554:0}, flag=1, p={23554:0}] [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) [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={23554:0}, flag=1, p={23554:0}] [L553] EXPR p->h VAL [a={23554:0}, flag=1, p={23554:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 [L556] EXPR p->h VAL [a={23554:0}, flag=0, p={23554:0}] [L556] COND TRUE p->h != 1 [L573] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "alternating_list-2.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98ms. Allocated memory is still 117.4MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.33ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 74.6MB in the end (delta: 17.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.25ms. Allocated memory is still 117.4MB. Free memory was 74.4MB in the beginning and 72.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.06ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 71.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 439.92ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 57.5MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2893.06ms. Allocated memory is still 117.4MB. Free memory was 57.5MB in the beginning and 87.4MB in the end (delta: -29.9MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. * Witness Printer took 38.24ms. Allocated memory is still 117.4MB. Free memory was 87.4MB in the beginning and 85.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 20:36:30,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac916d31-18e2-48d0-a560-9637068d9f82/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(valid-memcleanup)