./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-optional-2.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_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-optional-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3 --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 8287e6117d458104c3f33a0e7a83f771b50c3974e23296edc32c92f0b8cae546 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 03:25:01,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 03:25:01,304 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-11-25 03:25:01,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 03:25:01,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 03:25:01,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 03:25:01,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 03:25:01,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 03:25:01,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 03:25:01,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 03:25:01,354 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 03:25:01,354 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 03:25:01,354 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 03:25:01,354 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 03:25:01,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 03:25:01,354 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-25 03:25:01,355 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-25 03:25:01,356 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 03:25:01,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 03:25:01,357 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-25 03:25:01,357 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 03:25:01,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 03:25:01,357 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 03:25:01,357 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 03:25:01,357 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 03:25:01,358 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 03:25:01,358 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 03:25:01,358 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 03:25:01,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 03:25:01,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 03:25:01,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 03:25:01,358 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 03:25:01,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 03:25:01,358 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_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3 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 -> 8287e6117d458104c3f33a0e7a83f771b50c3974e23296edc32c92f0b8cae546 [2024-11-25 03:25:01,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 03:25:01,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 03:25:01,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 03:25:01,725 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 03:25:01,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 03:25:01,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/forester-heap/dll-optional-2.i [2024-11-25 03:25:04,794 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/data/f3bb163a4/fa5fc9dda3b74f07ba0a93ca7b2c76a4/FLAG84f7a6adf [2024-11-25 03:25:05,127 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 03:25:05,127 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/sv-benchmarks/c/forester-heap/dll-optional-2.i [2024-11-25 03:25:05,142 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/data/f3bb163a4/fa5fc9dda3b74f07ba0a93ca7b2c76a4/FLAG84f7a6adf [2024-11-25 03:25:05,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/data/f3bb163a4/fa5fc9dda3b74f07ba0a93ca7b2c76a4 [2024-11-25 03:25:05,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 03:25:05,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 03:25:05,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 03:25:05,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 03:25:05,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 03:25:05,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb6a428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05, skipping insertion in model container [2024-11-25 03:25:05,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 03:25:05,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 03:25:05,712 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 03:25:05,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 03:25:05,828 INFO L204 MainTranslator]: Completed translation [2024-11-25 03:25:05,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05 WrapperNode [2024-11-25 03:25:05,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 03:25:05,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 03:25:05,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 03:25:05,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 03:25:05,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,880 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116 [2024-11-25 03:25:05,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 03:25:05,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 03:25:05,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 03:25:05,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 03:25:05,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,934 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 03:25:05,979 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 03:25:05,979 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 03:25:05,979 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 03:25:05,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:05" (1/1) ... [2024-11-25 03:25:05,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 03:25:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 03:25:06,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 03:25:06,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 03:25:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-25 03:25:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-25 03:25:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-25 03:25:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 03:25:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-25 03:25:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-25 03:25:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-25 03:25:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 03:25:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 03:25:06,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 03:25:06,252 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 03:25:06,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 03:25:06,632 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-25 03:25:06,633 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 03:25:06,867 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 03:25:06,868 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-25 03:25:06,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:25:06 BoogieIcfgContainer [2024-11-25 03:25:06,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 03:25:06,870 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 03:25:06,870 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 03:25:06,883 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 03:25:06,883 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:25:06" (1/1) ... [2024-11-25 03:25:06,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 03:25:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:25:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2024-11-25 03:25:06,962 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2024-11-25 03:25:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-25 03:25:06,965 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:25:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:25:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 03:25:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 03:25:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:25:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 17 states and 23 transitions. [2024-11-25 03:25:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2024-11-25 03:25:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-25 03:25:07,615 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:25:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:25:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 03:25:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 03:25:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:25:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2024-11-25 03:25:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2024-11-25 03:25:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-25 03:25:08,566 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:25:08,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:25:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:25:08,747 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 03:25:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:25:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:25:09,020 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 03:25:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:25:09,160 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2024-11-25 03:25:09,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 03:25:09 ImpRootNode [2024-11-25 03:25:09,186 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 03:25:09,186 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 03:25:09,186 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 03:25:09,187 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 03:25:09,187 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:25:06" (3/4) ... [2024-11-25 03:25:09,188 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-25 03:25:09,232 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 8. [2024-11-25 03:25:09,292 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-25 03:25:09,292 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-25 03:25:09,292 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 03:25:09,293 INFO L158 Benchmark]: Toolchain (without parser) took 4123.64ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 59.7MB in the end (delta: 32.0MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2024-11-25 03:25:09,295 INFO L158 Benchmark]: CDTParser took 1.14ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:25:09,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.47ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 74.3MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-25 03:25:09,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.36ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 72.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:25:09,296 INFO L158 Benchmark]: Boogie Preprocessor took 96.92ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 71.0MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 03:25:09,297 INFO L158 Benchmark]: RCFGBuilder took 890.09ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 44.2MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-25 03:25:09,298 INFO L158 Benchmark]: CodeCheck took 2316.01ms. Allocated memory is still 117.4MB. Free memory was 44.2MB in the beginning and 64.1MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:25:09,298 INFO L158 Benchmark]: Witness Printer took 106.00ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 59.7MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 03:25:09,302 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 16 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - CounterExampleResult [Line: 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] COND FALSE !(__VERIFIER_nondet_int()) [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1000] head->data = 0 [L1000] head->opt = head [L1001] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1003] COND FALSE !(__VERIFIER_nondet_int()) [L1006] x = head VAL [head={-1:0}, x={-1:0}] [L1007] COND TRUE x != ((void*)0) VAL [head={-1:0}, x={-1:0}] [L1009] EXPR x->data [L1009] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, x={-1:0}] [L1009] COND TRUE !(x->data == 2 && x->opt == x) [L1009] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-optional-2.c", 16, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.47ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 74.3MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.36ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 72.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 96.92ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 71.0MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 890.09ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 44.2MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 2316.01ms. Allocated memory is still 117.4MB. Free memory was 44.2MB in the beginning and 64.1MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 106.00ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 59.7MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-25 03:25:09,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6cb1af8-8eae-47ff-9857-ee8db412d90f/bin/ukojak-verify-ENZ3QT5qd3/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)