./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk --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 4b55b51cb0b3b4f908f36b1c6f95a18eadc174b8702aa08ef4d6f9775df6bb52 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:14:06,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:14:06,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-11-08 23:14:06,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 23:14:06,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 23:14:06,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:14:06,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:14:06,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:14:06,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:14:06,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 23:14:06,323 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 23:14:06,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 23:14:06,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 23:14:06,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:14:06,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 23:14:06,324 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 23:14:06,325 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 23:14:06,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:14:06,325 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 23:14:06,326 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:14:06,326 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 23:14:06,330 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 23:14:06,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 23:14:06,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:14:06,331 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:14:06,331 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:14:06,336 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:14:06,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:14:06,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:14:06,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:14:06,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:14:06,337 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 23:14:06,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 23:14:06,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b55b51cb0b3b4f908f36b1c6f95a18eadc174b8702aa08ef4d6f9775df6bb52 [2024-11-08 23:14:06,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:14:06,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:14:06,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:14:06,668 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:14:06,669 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:14:06,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/forester-heap/dll-sorted-1.i Unable to find full path for "g++" [2024-11-08 23:14:08,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:14:08,840 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:14:08,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2024-11-08 23:14:08,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/data/00947927c/6c21f778d733447f860f82705790506d/FLAG0e42aba50 [2024-11-08 23:14:09,183 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/data/00947927c/6c21f778d733447f860f82705790506d [2024-11-08 23:14:09,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:14:09,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:14:09,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:14:09,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:14:09,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:14:09,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:09,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a7eeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09, skipping insertion in model container [2024-11-08 23:14:09,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:09,272 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:14:09,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:14:09,778 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:14:09,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:14:09,902 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:14:09,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09 WrapperNode [2024-11-08 23:14:09,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:14:09,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:14:09,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:14:09,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:14:09,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:09,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:09,998 INFO L138 Inliner]: procedures = 119, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 196 [2024-11-08 23:14:09,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:14:10,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:14:10,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:14:10,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:14:10,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:14:10,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:14:10,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:14:10,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:14:10,057 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:14:09" (1/1) ... [2024-11-08 23:14:10,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:14:10,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:14:10,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:14:10,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:14:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 23:14:10,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 23:14:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 23:14:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 23:14:10,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-08 23:14:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-08 23:14:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 23:14:10,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 23:14:10,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:14:10,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:14:10,336 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:14:10,338 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:14:10,775 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-08 23:14:10,775 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:14:10,880 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:14:10,880 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-08 23:14:10,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:14:10 BoogieIcfgContainer [2024-11-08 23:14:10,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:14:10,882 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:14:10,882 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:14:10,893 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:14:10,893 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:14:10" (1/1) ... [2024-11-08 23:14:10,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:14:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:14:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 62 states and 97 transitions. [2024-11-08 23:14:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 97 transitions. [2024-11-08 23:14:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-08 23:14:11,002 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:14:11,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:14:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:14:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:14:11,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:14:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 61 states and 91 transitions. [2024-11-08 23:14:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2024-11-08 23:14:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 23:14:11,329 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:14:11,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:14:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:14:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:14:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:14:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 63 states and 94 transitions. [2024-11-08 23:14:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 94 transitions. [2024-11-08 23:14:11,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 23:14:11,541 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:14:11,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:14:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:14:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 23:14:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:14:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 60 states and 91 transitions. [2024-11-08 23:14:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 91 transitions. [2024-11-08 23:14:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 23:14:12,114 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:14:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:14:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:14:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 23:14:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:14:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 59 states and 84 transitions. [2024-11-08 23:14:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2024-11-08 23:14:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 23:14:12,175 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:14:12,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:14:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:14:12,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:14:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:14:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:14:12,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:14:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:14:12,558 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2024-11-08 23:14:12,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 11:14:12 ImpRootNode [2024-11-08 23:14:12,590 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 23:14:12,590 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 23:14:12,590 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 23:14:12,591 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 23:14:12,591 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:14:10" (3/4) ... [2024-11-08 23:14:12,592 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 23:14:12,637 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 23:14:12,637 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 23:14:12,638 INFO L158 Benchmark]: Toolchain (without parser) took 3450.61ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 110.3MB in the beginning and 72.5MB in the end (delta: 37.8MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. [2024-11-08 23:14:12,639 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 148.9MB. Free memory is still 121.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:14:12,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 714.21ms. Allocated memory is still 148.9MB. Free memory was 110.3MB in the beginning and 89.4MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 23:14:12,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.84ms. Allocated memory is still 148.9MB. Free memory was 89.4MB in the beginning and 87.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:14:12,640 INFO L158 Benchmark]: Boogie Preprocessor took 53.04ms. Allocated memory is still 148.9MB. Free memory was 87.2MB in the beginning and 85.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:14:12,641 INFO L158 Benchmark]: RCFGBuilder took 825.16ms. Allocated memory is still 148.9MB. Free memory was 85.2MB in the beginning and 55.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-08 23:14:12,642 INFO L158 Benchmark]: CodeCheck took 1707.69ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 55.8MB in the beginning and 74.6MB in the end (delta: -18.8MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2024-11-08 23:14:12,642 INFO L158 Benchmark]: Witness Printer took 47.22ms. Allocated memory is still 180.4MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:14:12,645 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, 62 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 46 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; VAL [head={27068:0}, marked=0, x={27068:0}] [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 VAL [head={27068:0}, marked=1, x={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head VAL [head={27068:0}, x={27068:0}] [L1027] COND FALSE !(!(((void*)0) != x)) VAL [head={27068:0}, x={27068:0}] [L1028] marked = 0 VAL [head={27068:0}, x={27068:0}] [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 VAL [head={27068:0}, x={27068:0}] [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [head={27068:0}, x={27068:0}] [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data VAL [head={27068:0}, x={-1:0}] [L1038] COND TRUE !(x->data != 1) [L1038] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 148.9MB. Free memory is still 121.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 714.21ms. Allocated memory is still 148.9MB. Free memory was 110.3MB in the beginning and 89.4MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.84ms. Allocated memory is still 148.9MB. Free memory was 89.4MB in the beginning and 87.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.04ms. Allocated memory is still 148.9MB. Free memory was 87.2MB in the beginning and 85.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 825.16ms. Allocated memory is still 148.9MB. Free memory was 85.2MB in the beginning and 55.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * CodeCheck took 1707.69ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 55.8MB in the beginning and 74.6MB in the end (delta: -18.8MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Witness Printer took 47.22ms. Allocated memory is still 180.4MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 23:14:12,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b76ea42e-14a8-40eb-a6c1-3b6ac25564bc/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)