./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/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_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/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_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/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 4b55b51cb0b3b4f908f36b1c6f95a18eadc174b8702aa08ef4d6f9775df6bb52 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 23:37:42,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 23:37:42,676 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-12-05 23:37:42,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 23:37:42,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 23:37:42,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 23:37:42,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 23:37:42,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 23:37:42,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 23:37:42,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 23:37:42,705 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 23:37:42,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 23:37:42,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 23:37:42,707 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 23:37:42,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 23:37:42,707 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 23:37:42,707 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 23:37:42,707 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 23:37:42,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 23:37:42,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:37:42,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 23:37:42,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 23:37:42,708 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 23:37:42,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 23:37:42,708 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_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/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 -> 4b55b51cb0b3b4f908f36b1c6f95a18eadc174b8702aa08ef4d6f9775df6bb52 [2024-12-05 23:37:42,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 23:37:43,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 23:37:43,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 23:37:43,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 23:37:43,012 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 23:37:43,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2024-12-05 23:37:46,340 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/data/4805e0dd6/7a66a5f26e0e4b588281a3344b51096e/FLAGa98b5bbfa [2024-12-05 23:37:46,622 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 23:37:46,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2024-12-05 23:37:46,636 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/data/4805e0dd6/7a66a5f26e0e4b588281a3344b51096e/FLAGa98b5bbfa [2024-12-05 23:37:46,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/data/4805e0dd6/7a66a5f26e0e4b588281a3344b51096e [2024-12-05 23:37:46,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 23:37:46,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 23:37:46,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 23:37:46,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 23:37:46,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 23:37:46,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:37:46" (1/1) ... [2024-12-05 23:37:46,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42366c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:46, skipping insertion in model container [2024-12-05 23:37:46,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:37:46" (1/1) ... [2024-12-05 23:37:46,700 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 23:37:46,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:37:47,005 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 23:37:47,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:37:47,086 INFO L204 MainTranslator]: Completed translation [2024-12-05 23:37:47,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47 WrapperNode [2024-12-05 23:37:47,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 23:37:47,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 23:37:47,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 23:37:47,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 23:37:47,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,128 INFO L138 Inliner]: procedures = 119, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 196 [2024-12-05 23:37:47,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 23:37:47,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 23:37:47,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 23:37:47,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 23:37:47,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,152 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 23:37:47,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 23:37:47,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 23:37:47,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 23:37:47,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:37:47,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 23:37:47,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 23:37:47,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 23:37:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-05 23:37:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-05 23:37:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-05 23:37:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 23:37:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-05 23:37:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-05 23:37:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 23:37:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 23:37:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 23:37:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 23:37:47,328 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 23:37:47,330 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 23:37:47,661 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-12-05 23:37:47,661 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 23:37:47,776 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 23:37:47,777 INFO L312 CfgBuilder]: Removed 12 assume(true) statements. [2024-12-05 23:37:47,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:37:47 BoogieIcfgContainer [2024-12-05 23:37:47,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 23:37:47,778 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 23:37:47,778 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 23:37:47,791 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 23:37:47,791 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:37:47" (1/1) ... [2024-12-05 23:37:47,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 23:37:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:37:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 58 states and 91 transitions. [2024-12-05 23:37:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 91 transitions. [2024-12-05 23:37:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-05 23:37:47,873 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:37:47,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:37:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:37:48,033 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 23:37:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:37:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 57 states and 85 transitions. [2024-12-05 23:37:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 85 transitions. [2024-12-05 23:37:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-05 23:37:48,070 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:37:48,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:37:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:37:48,150 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 23:37:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:37:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 59 states and 88 transitions. [2024-12-05 23:37:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 88 transitions. [2024-12-05 23:37:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-05 23:37:48,240 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:37:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:37:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:37:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 23:37:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:37:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 56 states and 85 transitions. [2024-12-05 23:37:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 85 transitions. [2024-12-05 23:37:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 23:37:48,736 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:37:48,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:37:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:37:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-05 23:37:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:37:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 55 states and 78 transitions. [2024-12-05 23:37:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2024-12-05 23:37:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-05 23:37:48,820 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:37:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:37:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:37:48,921 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:37:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:37:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:37:49,094 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:37:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:37:49,178 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2024-12-05 23:37:49,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 11:37:49 ImpRootNode [2024-12-05 23:37:49,211 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 23:37:49,212 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 23:37:49,212 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 23:37:49,212 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 23:37:49,213 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:37:47" (3/4) ... [2024-12-05 23:37:49,213 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-05 23:37:49,250 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 12. [2024-12-05 23:37:49,301 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 23:37:49,302 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 23:37:49,302 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 23:37:49,303 INFO L158 Benchmark]: Toolchain (without parser) took 2646.26ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 66.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-05 23:37:49,303 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:37:49,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.34ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 73.6MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 23:37:49,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.79ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 71.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:37:49,305 INFO L158 Benchmark]: Boogie Preprocessor took 33.41ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 70.0MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:37:49,305 INFO L158 Benchmark]: RCFGBuilder took 613.59ms. Allocated memory is still 117.4MB. Free memory was 70.0MB in the beginning and 41.1MB in the end (delta: 28.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-05 23:37:49,305 INFO L158 Benchmark]: CodeCheck took 1433.08ms. Allocated memory is still 117.4MB. Free memory was 41.1MB in the beginning and 71.6MB in the end (delta: -30.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:37:49,306 INFO L158 Benchmark]: Witness Printer took 90.16ms. Allocated memory is still 117.4MB. Free memory was 71.6MB in the beginning and 66.4MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:37:49,308 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, 58 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, 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, 66 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 44 mSDtfsCounter, 81 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s 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, ConComCheckerStatistics: 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={20437:0}, marked=0, x={20437:0}] [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={20437:0}, marked=1, x={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head VAL [head={20437:0}, x={20437:0}] [L1027] COND FALSE !(!(((void*)0) != x)) VAL [head={20437:0}, x={20437:0}] [L1027] COND FALSE !(0) VAL [head={20437:0}, x={20437:0}] [L1028] marked = 0 VAL [head={20437:0}, x={20437:0}] [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={20437:0}, x={20437:0}] [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={20437:0}, x={20437:0}] [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data VAL [head={20437:0}, 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 0.38ms. Allocated memory is still 117.4MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 428.34ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 73.6MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.79ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 71.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.41ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 70.0MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 613.59ms. Allocated memory is still 117.4MB. Free memory was 70.0MB in the beginning and 41.1MB in the end (delta: 28.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 1433.08ms. Allocated memory is still 117.4MB. Free memory was 41.1MB in the beginning and 71.6MB in the end (delta: -30.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 90.16ms. Allocated memory is still 117.4MB. Free memory was 71.6MB in the beginning and 66.4MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-05 23:37:49,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f5b4a-cc62-4a68-b04a-310a473c20fb/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)