./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 21:13:29,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 21:13:29,502 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-11-13 21:13:29,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 21:13:29,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 21:13:29,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 21:13:29,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 21:13:29,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 21:13:29,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 21:13:29,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 21:13:29,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 21:13:29,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 21:13:29,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 21:13:29,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 21:13:29,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 21:13:29,537 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 21:13:29,537 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 21:13:29,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 21:13:29,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 21:13:29,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 21:13:29,538 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 21:13:29,538 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 21:13:29,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 21:13:29,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 21:13:29,538 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 21:13:29,538 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 21:13:29,539 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 21:13:29,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 21:13:29,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 21:13:29,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 21:13:29,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 21:13:29,539 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 21:13:29,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 21:13:29,539 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_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2024-11-13 21:13:29,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 21:13:29,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 21:13:29,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 21:13:29,836 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 21:13:29,837 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 21:13:29,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i Unable to find full path for "g++" [2024-11-13 21:13:31,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 21:13:32,059 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 21:13:32,060 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2024-11-13 21:13:32,074 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/data/d48b6e382/6544c2098c5d4cbebc0b36cfb1ab5fac/FLAG656e13124 [2024-11-13 21:13:32,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/data/d48b6e382/6544c2098c5d4cbebc0b36cfb1ab5fac [2024-11-13 21:13:32,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 21:13:32,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 21:13:32,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 21:13:32,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 21:13:32,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 21:13:32,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7013b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32, skipping insertion in model container [2024-11-13 21:13:32,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 21:13:32,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 21:13:32,469 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 21:13:32,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 21:13:32,562 INFO L204 MainTranslator]: Completed translation [2024-11-13 21:13:32,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32 WrapperNode [2024-11-13 21:13:32,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 21:13:32,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 21:13:32,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 21:13:32,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 21:13:32,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,623 INFO L138 Inliner]: procedures = 129, calls = 80, calls flagged for inlining = 25, calls inlined = 58, statements flattened = 482 [2024-11-13 21:13:32,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 21:13:32,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 21:13:32,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 21:13:32,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 21:13:32,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 21:13:32,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 21:13:32,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 21:13:32,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 21:13:32,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:32" (1/1) ... [2024-11-13 21:13:32,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 21:13:32,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 21:13:32,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 21:13:32,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 21:13:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 21:13:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 21:13:32,972 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 21:13:32,974 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 21:13:33,662 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-11-13 21:13:33,664 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 21:13:33,914 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 21:13:33,917 INFO L316 CfgBuilder]: Removed 61 assume(true) statements. [2024-11-13 21:13:33,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:13:33 BoogieIcfgContainer [2024-11-13 21:13:33,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 21:13:33,918 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 21:13:33,919 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 21:13:33,930 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 21:13:33,930 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:13:33" (1/1) ... [2024-11-13 21:13:33,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 21:13:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 164 states and 264 transitions. [2024-11-13 21:13:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 264 transitions. [2024-11-13 21:13:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 21:13:34,012 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:34,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 21:13:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 163 states and 255 transitions. [2024-11-13 21:13:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 255 transitions. [2024-11-13 21:13:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 21:13:34,279 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:34,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 21:13:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 168 states and 264 transitions. [2024-11-13 21:13:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 264 transitions. [2024-11-13 21:13:36,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 21:13:36,181 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:36,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 21:13:39,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 174 states and 273 transitions. [2024-11-13 21:13:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 273 transitions. [2024-11-13 21:13:39,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 21:13:39,142 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 21:13:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 175 states and 274 transitions. [2024-11-13 21:13:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 274 transitions. [2024-11-13 21:13:42,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 21:13:42,060 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:42,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 21:13:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 156 states and 244 transitions. [2024-11-13 21:13:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 244 transitions. [2024-11-13 21:13:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 21:13:43,165 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:13:43,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 21:13:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:13:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:13:43,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 21:13:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:13:44,094 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-11-13 21:13:44,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 09:13:44 ImpRootNode [2024-11-13 21:13:44,136 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 21:13:44,137 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 21:13:44,137 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 21:13:44,137 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 21:13:44,138 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:13:33" (3/4) ... [2024-11-13 21:13:44,139 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 21:13:44,199 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 21:13:44,200 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 21:13:44,201 INFO L158 Benchmark]: Toolchain (without parser) took 12105.29ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 117.4MB in the beginning and 138.4MB in the end (delta: -21.0MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2024-11-13 21:13:44,203 INFO L158 Benchmark]: CDTParser took 1.23ms. Allocated memory is still 167.8MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:13:44,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.66ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 99.1MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 21:13:44,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.16ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 96.1MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 21:13:44,204 INFO L158 Benchmark]: Boogie Preprocessor took 78.28ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 92.8MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:13:44,204 INFO L158 Benchmark]: RCFGBuilder took 1215.25ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 102.4MB in the end (delta: -9.6MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2024-11-13 21:13:44,205 INFO L158 Benchmark]: CodeCheck took 10217.89ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 102.4MB in the beginning and 141.1MB in the end (delta: -38.6MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2024-11-13 21:13:44,206 INFO L158 Benchmark]: Witness Printer took 63.01ms. Allocated memory is still 218.1MB. Free memory was 141.1MB in the beginning and 138.4MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:13:44,210 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, 164 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 378 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 329 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 230 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 374 IncrementalHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 99 mSDtfsCounter, 374 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 706 GetRequests, 624 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1004 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 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: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L639] const struct node *p1, *p2; [L640] CALL, EXPR create_sll(&p1, &p2) [L588] struct node *list = ((void *)0); VAL [list={22735:0}, pp1={22733:0}, pp2={22734:0}] [L590] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L590] RET chain_node(&list) [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L597] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L597] RET chain_node(&list) [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] RET, EXPR create_sll(&p1, &p2) [L640] struct node *list = create_sll(&p1, &p2); [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) [L626] COND FALSE !(!(beg)) VAL [beg={-2:0}, end={-2:0}] [L627] COND FALSE !(!(end)) VAL [beg={-2:0}, end={-2:0}] [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg VAL [beg={0:0}, end={-2:0}] [L629] COND TRUE !(beg) [L629] CALL fail() [L565] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_to_dll_rev-1.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23ms. Allocated memory is still 167.8MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.66ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 99.1MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.16ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 96.1MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.28ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 92.8MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1215.25ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 102.4MB in the end (delta: -9.6MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * CodeCheck took 10217.89ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 102.4MB in the beginning and 141.1MB in the end (delta: -38.6MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Witness Printer took 63.01ms. Allocated memory is still 218.1MB. Free memory was 141.1MB in the beginning and 138.4MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 21:13:44,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed8a807-5f53-4d76-a7cf-48b548770022/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)