./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bdc21b2f61b0d69220994ec3f8dc9d2db928c146bd54c19e0632aa07d01871a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 04:41:05,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 04:41:05,395 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2024-12-06 04:41:05,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 04:41:05,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 04:41:05,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 04:41:05,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 04:41:05,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 04:41:05,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 04:41:05,418 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 04:41:05,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 04:41:05,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 04:41:05,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 04:41:05,419 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 04:41:05,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 04:41:05,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 04:41:05,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 04:41:05,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 04:41:05,420 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 04:41:05,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 04:41:05,420 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_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 1bdc21b2f61b0d69220994ec3f8dc9d2db928c146bd54c19e0632aa07d01871a [2024-12-06 04:41:05,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 04:41:05,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 04:41:05,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 04:41:05,662 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 04:41:05,662 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 04:41:05,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2024-12-06 04:41:08,297 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/data/4e5163313/1ad1332db7764dac8a52c297e4ef8558/FLAG4855e7d8e [2024-12-06 04:41:08,537 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 04:41:08,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2024-12-06 04:41:08,549 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/data/4e5163313/1ad1332db7764dac8a52c297e4ef8558/FLAG4855e7d8e [2024-12-06 04:41:08,564 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/data/4e5163313/1ad1332db7764dac8a52c297e4ef8558 [2024-12-06 04:41:08,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 04:41:08,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 04:41:08,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 04:41:08,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 04:41:08,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 04:41:08,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418e4a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08, skipping insertion in model container [2024-12-06 04:41:08,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,603 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 04:41:08,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 04:41:08,870 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 04:41:08,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 04:41:08,933 INFO L204 MainTranslator]: Completed translation [2024-12-06 04:41:08,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08 WrapperNode [2024-12-06 04:41:08,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 04:41:08,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 04:41:08,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 04:41:08,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 04:41:08,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,964 INFO L138 Inliner]: procedures = 122, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2024-12-06 04:41:08,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 04:41:08,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 04:41:08,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 04:41:08,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 04:41:08,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,978 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 04:41:08,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 04:41:08,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 04:41:08,985 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 04:41:08,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:08" (1/1) ... [2024-12-06 04:41:08,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 04:41:09,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 04:41:09,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 04:41:09,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 04:41:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 04:41:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 04:41:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 04:41:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 04:41:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 04:41:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 04:41:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 04:41:09,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 04:41:09,114 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 04:41:09,115 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 04:41:09,299 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-12-06 04:41:09,299 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 04:41:09,329 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 04:41:09,329 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-06 04:41:09,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:41:09 BoogieIcfgContainer [2024-12-06 04:41:09,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 04:41:09,330 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 04:41:09,330 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 04:41:09,337 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 04:41:09,337 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:41:09" (1/1) ... [2024-12-06 04:41:09,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 04:41:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 47 states and 51 transitions. [2024-12-06 04:41:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-12-06 04:41:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-06 04:41:09,389 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:09,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 47 states and 50 transitions. [2024-12-06 04:41:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2024-12-06 04:41:09,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-06 04:41:09,517 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:09,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:09,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 46 states and 49 transitions. [2024-12-06 04:41:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-12-06 04:41:09,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-06 04:41:09,647 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 50 states and 56 transitions. [2024-12-06 04:41:09,943 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-12-06 04:41:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 04:41:09,943 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:09,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 48 states and 52 transitions. [2024-12-06 04:41:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-12-06 04:41:10,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 04:41:10,216 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:10,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 47 states and 51 transitions. [2024-12-06 04:41:10,477 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-12-06 04:41:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 04:41:10,477 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:10,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:11,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 49 states and 55 transitions. [2024-12-06 04:41:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2024-12-06 04:41:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 04:41:11,450 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:11,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 51 states and 57 transitions. [2024-12-06 04:41:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-12-06 04:41:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 04:41:12,024 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:12,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 53 states and 61 transitions. [2024-12-06 04:41:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-12-06 04:41:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-06 04:41:12,538 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-06 04:41:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 55 states and 66 transitions. [2024-12-06 04:41:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-12-06 04:41:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-06 04:41:13,220 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:13,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 04:41:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 55 states and 65 transitions. [2024-12-06 04:41:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2024-12-06 04:41:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-06 04:41:13,970 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:13,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 04:41:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-06 04:41:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 04:41:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 57 states and 68 transitions. [2024-12-06 04:41:14,720 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-12-06 04:41:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-06 04:41:14,720 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 04:41:14,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 04:41:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 04:41:14,730 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 04:41:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 04:41:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 04:41:14,769 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 04:41:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 04:41:14,792 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2024-12-06 04:41:14,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 04:41:14 ImpRootNode [2024-12-06 04:41:14,817 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 04:41:14,818 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 04:41:14,818 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 04:41:14,818 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 04:41:14,819 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:41:09" (3/4) ... [2024-12-06 04:41:14,820 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 04:41:14,858 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 7. [2024-12-06 04:41:14,901 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 04:41:14,901 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 04:41:14,901 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 04:41:14,902 INFO L158 Benchmark]: Toolchain (without parser) took 6334.41ms. Allocated memory was 117.4MB in the beginning and 209.7MB in the end (delta: 92.3MB). Free memory was 92.2MB in the beginning and 77.8MB in the end (delta: 14.3MB). Peak memory consumption was 106.8MB. Max. memory is 16.1GB. [2024-12-06 04:41:14,902 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 04:41:14,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.98ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 75.1MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 04:41:14,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.19ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 73.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 04:41:14,903 INFO L158 Benchmark]: Boogie Preprocessor took 19.80ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 72.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 04:41:14,903 INFO L158 Benchmark]: RCFGBuilder took 344.12ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 56.8MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 04:41:14,904 INFO L158 Benchmark]: CodeCheck took 5487.25ms. Allocated memory was 117.4MB in the beginning and 209.7MB in the end (delta: 92.3MB). Free memory was 56.8MB in the beginning and 82.3MB in the end (delta: -25.5MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. [2024-12-06 04:41:14,904 INFO L158 Benchmark]: Witness Printer took 83.27ms. Allocated memory is still 209.7MB. Free memory was 82.3MB in the beginning and 77.8MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 04:41:14,905 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, 47 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 352 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 246 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 877 IncrementalHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 246 mSolverCounterUnsat, 113 mSDtfsCounter, 877 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 690 GetRequests, 583 SyntacticMatches, 5 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3623 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 314 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 4/9 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L523] int *a, *b; [L524] int n; [L536] n = 1 VAL [a={0:0}, b={0:0}, n=1] [L537] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L540] a = malloc(n * sizeof(*a)) [L541] b = malloc(n * sizeof(*b)) [L542] EXPR b++ VAL [a={-1:0}, b={-2:4}, n=1] [L542] *b++ = 0 [L543] CALL foo() [L528] int i; [L529] i = 0 VAL [a={-1:0}, b={-2:4}, i=0, n=1] [L529] COND TRUE i < n VAL [a={-1:0}, b={-2:4}, i=0, n=1] [L530] a[i] = n [L529] i++ VAL [a={-1:0}, b={-2:4}, i=1, n=1] [L529] COND FALSE !(i < n) [L531] i = 0 VAL [a={-1:0}, b={-2:4}, i=0, n=1] [L531] COND FALSE !(i < n - 1) [L543] RET foo() [L544] b[-2] * 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 is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.98ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 75.1MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.19ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 73.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.80ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 72.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 344.12ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 56.8MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 5487.25ms. Allocated memory was 117.4MB in the beginning and 209.7MB in the end (delta: 92.3MB). Free memory was 56.8MB in the beginning and 82.3MB in the end (delta: -25.5MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. * Witness Printer took 83.27ms. Allocated memory is still 209.7MB. Free memory was 82.3MB in the beginning and 77.8MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 04:41:14,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81d53830-dd37-4789-ac00-554512da0721/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)