./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/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_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/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_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/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-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-d790fec [2024-12-05 21:41:36,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 21:41:36,581 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-12-05 21:41:36,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 21:41:36,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 21:41:36,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 21:41:36,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 21:41:36,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 21:41:36,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 21:41:36,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 21:41:36,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 21:41:36,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-05 21:41:36,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 21:41:36,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 21:41:36,612 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 21:41:36,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 21:41:36,612 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 21:41:36,612 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 21:41:36,613 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 21:41:36,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 21:41:36,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 21:41:36,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 21:41:36,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 21:41:36,613 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 21:41:36,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 21:41:36,613 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_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/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-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 [2024-12-05 21:41:36,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 21:41:36,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 21:41:36,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 21:41:36,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 21:41:36,855 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 21:41:36,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2024-12-05 21:41:39,749 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/data/72ec5077e/569c860b20b24e188e611a2ab99c0936/FLAG3ba0fec75 [2024-12-05 21:41:40,060 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 21:41:40,061 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2024-12-05 21:41:40,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/data/72ec5077e/569c860b20b24e188e611a2ab99c0936/FLAG3ba0fec75 [2024-12-05 21:41:40,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/data/72ec5077e/569c860b20b24e188e611a2ab99c0936 [2024-12-05 21:41:40,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 21:41:40,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 21:41:40,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 21:41:40,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 21:41:40,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 21:41:40,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450d3e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40, skipping insertion in model container [2024-12-05 21:41:40,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,140 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 21:41:40,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 21:41:40,463 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 21:41:40,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 21:41:40,542 INFO L204 MainTranslator]: Completed translation [2024-12-05 21:41:40,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40 WrapperNode [2024-12-05 21:41:40,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 21:41:40,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 21:41:40,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 21:41:40,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 21:41:40,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,597 INFO L138 Inliner]: procedures = 129, calls = 80, calls flagged for inlining = 25, calls inlined = 58, statements flattened = 482 [2024-12-05 21:41:40,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 21:41:40,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 21:41:40,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 21:41:40,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 21:41:40,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,624 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 21:41:40,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 21:41:40,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 21:41:40,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 21:41:40,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:41:40" (1/1) ... [2024-12-05 21:41:40,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 21:41:40,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 21:41:40,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 21:41:40,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 21:41:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 21:41:40,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 21:41:40,839 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 21:41:40,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 21:41:41,375 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-12-05 21:41:41,376 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 21:41:41,538 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 21:41:41,539 INFO L312 CfgBuilder]: Removed 37 assume(true) statements. [2024-12-05 21:41:41,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:41:41 BoogieIcfgContainer [2024-12-05 21:41:41,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 21:41:41,540 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 21:41:41,540 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 21:41:41,550 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 21:41:41,551 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:41:41" (1/1) ... [2024-12-05 21:41:41,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 21:41:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:41:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 164 states and 264 transitions. [2024-12-05 21:41:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 264 transitions. [2024-12-05 21:41:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-05 21:41:41,607 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:41:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:41:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:41:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:41:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:41:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 163 states and 255 transitions. [2024-12-05 21:41:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 255 transitions. [2024-12-05 21:41:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-05 21:41:41,819 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:41:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:41:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:41:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:41:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:41:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 168 states and 264 transitions. [2024-12-05 21:41:43,191 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 264 transitions. [2024-12-05 21:41:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 21:41:43,191 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:41:43,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:41:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:41:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:41:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:41:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 161 states and 254 transitions. [2024-12-05 21:41:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 254 transitions. [2024-12-05 21:41:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 21:41:44,508 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:41:44,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:41:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:41:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 21:41:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:41:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 167 states and 261 transitions. [2024-12-05 21:41:46,781 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 261 transitions. [2024-12-05 21:41:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-05 21:41:46,783 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:41:46,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:41:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:41:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-05 21:41:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:41:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 169 states and 266 transitions. [2024-12-05 21:41:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 266 transitions. [2024-12-05 21:41:48,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-05 21:41:48,324 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:41:48,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:41:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 21:41:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-05 21:41:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 21:41:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 157 states and 246 transitions. [2024-12-05 21:41:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 246 transitions. [2024-12-05 21:41:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-05 21:41:48,905 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 21:41:48,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 21:41:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 21:41:48,951 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 21:41:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 21:41:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 21:41:49,438 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 21:41:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 21:41:49,699 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2024-12-05 21:41:49,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 09:41:49 ImpRootNode [2024-12-05 21:41:49,733 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 21:41:49,733 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 21:41:49,733 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 21:41:49,734 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 21:41:49,734 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:41:41" (3/4) ... [2024-12-05 21:41:49,735 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-05 21:41:49,784 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 27. [2024-12-05 21:41:49,853 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 21:41:49,854 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 21:41:49,854 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 21:41:49,855 INFO L158 Benchmark]: Toolchain (without parser) took 9757.20ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 116.3MB in the beginning and 92.6MB in the end (delta: 23.7MB). Peak memory consumption was 164.6MB. Max. memory is 16.1GB. [2024-12-05 21:41:49,855 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 142.6MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 21:41:49,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.51ms. Allocated memory is still 142.6MB. Free memory was 116.1MB in the beginning and 97.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 21:41:49,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.67ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 94.9MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 21:41:49,856 INFO L158 Benchmark]: Boogie Preprocessor took 47.59ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 91.7MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 21:41:49,857 INFO L158 Benchmark]: RCFGBuilder took 893.59ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 93.1MB in the end (delta: -1.4MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2024-12-05 21:41:49,857 INFO L158 Benchmark]: CodeCheck took 8192.85ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 93.1MB in the beginning and 99.9MB in the end (delta: -6.8MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. [2024-12-05 21:41:49,857 INFO L158 Benchmark]: Witness Printer took 120.53ms. Allocated memory is still 285.2MB. Free memory was 99.9MB in the beginning and 92.6MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 21:41:49,859 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: 8.1s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 444 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 379 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 261 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 428 IncrementalHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 118 mSDtfsCounter, 428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 840 GetRequests, 738 SyntacticMatches, 22 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 1222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 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: 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={26069:0}, pp1={26068:0}, pp2={26070:0}] [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); [L641] COND FALSE !(0) [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) [L626] COND FALSE !(!(beg)) VAL [beg={26066:0}, end={26066:0}] [L626] COND FALSE !(0) VAL [beg={26066:0}, end={26066:0}] [L627] COND FALSE !(!(end)) VAL [beg={26066:0}, end={26066:0}] [L627] COND FALSE !(0) VAL [beg={26066:0}, end={26066:0}] [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg VAL [beg={0:0}, end={26066:0}] [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 0.35ms. Allocated memory is still 142.6MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.51ms. Allocated memory is still 142.6MB. Free memory was 116.1MB in the beginning and 97.8MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.67ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 94.9MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.59ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 91.7MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 893.59ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 93.1MB in the end (delta: -1.4MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. * CodeCheck took 8192.85ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 93.1MB in the beginning and 99.9MB in the end (delta: -6.8MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. * Witness Printer took 120.53ms. Allocated memory is still 285.2MB. Free memory was 99.9MB in the beginning and 92.6MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-05 21:41:49,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed7a2d5-35d5-4183-b8c5-b7a11239ccc0/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-memcleanup)