./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.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_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/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_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/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_33b314a8-df0d-4eb5-bd86-368f9fea4571/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 63302b5441ba85cd38f4ed3669bf40852137e8be39297cc19159731ba051a536 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 05:33:15,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 05:33:15,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2024-12-06 05:33:15,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 05:33:15,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 05:33:15,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 05:33:15,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 05:33:15,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 05:33:15,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 05:33:15,512 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 05:33:15,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 05:33:15,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 05:33:15,513 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 05:33:15,513 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 05:33:15,514 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 05:33:15,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 05:33:15,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:33:15,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 05:33:15,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 05:33:15,514 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 05:33:15,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 05:33:15,514 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_33b314a8-df0d-4eb5-bd86-368f9fea4571/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 -> 63302b5441ba85cd38f4ed3669bf40852137e8be39297cc19159731ba051a536 [2024-12-06 05:33:15,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 05:33:15,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 05:33:15,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 05:33:15,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 05:33:15,727 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 05:33:15,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2024-12-06 05:33:18,320 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/data/b3b907cf0/da85c62fa0974590950a615f741163a5/FLAG0360ea9d9 [2024-12-06 05:33:18,540 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 05:33:18,541 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2024-12-06 05:33:18,550 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/data/b3b907cf0/da85c62fa0974590950a615f741163a5/FLAG0360ea9d9 [2024-12-06 05:33:18,888 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/data/b3b907cf0/da85c62fa0974590950a615f741163a5 [2024-12-06 05:33:18,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 05:33:18,891 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 05:33:18,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 05:33:18,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 05:33:18,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 05:33:18,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:18" (1/1) ... [2024-12-06 05:33:18,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2585c3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:18, skipping insertion in model container [2024-12-06 05:33:18,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:33:18" (1/1) ... [2024-12-06 05:33:18,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 05:33:19,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:33:19,135 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 05:33:19,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:33:19,187 INFO L204 MainTranslator]: Completed translation [2024-12-06 05:33:19,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19 WrapperNode [2024-12-06 05:33:19,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 05:33:19,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 05:33:19,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 05:33:19,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 05:33:19,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,217 INFO L138 Inliner]: procedures = 112, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-12-06 05:33:19,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 05:33:19,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 05:33:19,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 05:33:19,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 05:33:19,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,228 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 05:33:19,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 05:33:19,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 05:33:19,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 05:33:19,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:33:19,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 05:33:19,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 05:33:19,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 05:33:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 05:33:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 05:33:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 05:33:19,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 05:33:19,346 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 05:33:19,347 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 05:33:19,433 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-12-06 05:33:19,433 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 05:33:19,446 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 05:33:19,446 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-06 05:33:19,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:19 BoogieIcfgContainer [2024-12-06 05:33:19,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 05:33:19,447 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 05:33:19,448 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 05:33:19,456 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 05:33:19,457 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:19" (1/1) ... [2024-12-06 05:33:19,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 05:33:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-12-06 05:33:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-12-06 05:33:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-12-06 05:33:19,513 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:19,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:33:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-12-06 05:33:19,655 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-12-06 05:33:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 05:33:19,655 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:19,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:33:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-12-06 05:33:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-12-06 05:33:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-06 05:33:19,776 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:19,845 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 05:33:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2024-12-06 05:33:20,007 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2024-12-06 05:33:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 05:33:20,007 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:20,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:20,054 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 05:33:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-12-06 05:33:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-12-06 05:33:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 05:33:20,084 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:20,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:20,128 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 05:33:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2024-12-06 05:33:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2024-12-06 05:33:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 05:33:20,137 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:20,185 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 05:33:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-12-06 05:33:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-12-06 05:33:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 05:33:20,293 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:20,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:20,320 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 05:33:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-12-06 05:33:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-12-06 05:33:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 05:33:20,335 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:20,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:20,489 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 05:33:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-12-06 05:33:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-12-06 05:33:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 05:33:20,975 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:20,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:21,062 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 05:33:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-12-06 05:33:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-12-06 05:33:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 05:33:21,090 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:21,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:21,230 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 05:33:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-12-06 05:33:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-12-06 05:33:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 05:33:22,050 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:22,066 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 05:33:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2024-12-06 05:33:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2024-12-06 05:33:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-06 05:33:22,262 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:22,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:33:22,277 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 05:33:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:33:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-12-06 05:33:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-12-06 05:33:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-06 05:33:22,355 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:33:22,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:33:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:33:22,363 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:33:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:33:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:33:22,393 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:33:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:33:22,406 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 13 iterations. [2024-12-06 05:33:22,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 05:33:22 ImpRootNode [2024-12-06 05:33:22,426 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 05:33:22,426 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 05:33:22,426 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 05:33:22,427 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 05:33:22,427 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:33:19" (3/4) ... [2024-12-06 05:33:22,427 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 05:33:22,454 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 2. [2024-12-06 05:33:22,482 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 05:33:22,482 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 05:33:22,482 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 05:33:22,483 INFO L158 Benchmark]: Toolchain (without parser) took 3592.04ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 74.2MB in the end (delta: 42.3MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2024-12-06 05:33:22,483 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 142.6MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:33:22,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.59ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 100.4MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 05:33:22,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.50ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:33:22,484 INFO L158 Benchmark]: Boogie Preprocessor took 12.70ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 98.2MB in the end (delta: 791.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:33:22,485 INFO L158 Benchmark]: RCFGBuilder took 215.17ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 86.8MB in the end (delta: 11.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 05:33:22,485 INFO L158 Benchmark]: CodeCheck took 2978.56ms. Allocated memory is still 142.6MB. Free memory was 86.8MB in the beginning and 78.0MB in the end (delta: 8.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2024-12-06 05:33:22,485 INFO L158 Benchmark]: Witness Printer took 55.93ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 74.2MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:33:22,488 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, 23 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 281 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 198 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 162 mSDsCounter, 239 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 699 IncrementalHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 239 mSolverCounterUnsat, 36 mSDtfsCounter, 699 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 469 SyntacticMatches, 9 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2872 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; VAL [adressY=-1, y={-1:0}] [L547] free(y) VAL [adressY=-1] [L547] free(y) VAL [adressY=-1] [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; VAL [adressX=-1, adressY=-1, x={-1:0}] [L550] COND TRUE adressX == adressY VAL [x={-1:0}] [L552] free(x) VAL [x={-1:0}] [L552] free(x) VAL [x={-1:0}] [L552] free(x) [L554] free(x) [L554] free(x) [L554] free(x) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 142.6MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.59ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 100.4MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.50ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.70ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 98.2MB in the end (delta: 791.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.17ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 86.8MB in the end (delta: 11.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2978.56ms. Allocated memory is still 142.6MB. Free memory was 86.8MB in the beginning and 78.0MB in the end (delta: 8.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Witness Printer took 55.93ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 74.2MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 05:33:22,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b314a8-df0d-4eb5-bd86-368f9fea4571/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-free)