./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-optional-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-optional-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 88a09c8f9046119952ab983278979c8bac528a0f4e69aababe99c00b4eccdca0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 00:50:15,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 00:50:15,852 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-11-09 00:50:15,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 00:50:15,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-09 00:50:15,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 00:50:15,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 00:50:15,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 00:50:15,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 00:50:15,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 00:50:15,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 00:50:15,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 00:50:15,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 00:50:15,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 00:50:15,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 00:50:15,890 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 00:50:15,890 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 00:50:15,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 00:50:15,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 00:50:15,891 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 00:50:15,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 00:50:15,894 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 00:50:15,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 00:50:15,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 00:50:15,894 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-09 00:50:15,895 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-09 00:50:15,895 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-09 00:50:15,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 00:50:15,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:50:15,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 00:50:15,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 00:50:15,896 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-09 00:50:15,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 00:50:15,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88a09c8f9046119952ab983278979c8bac528a0f4e69aababe99c00b4eccdca0 [2024-11-09 00:50:16,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 00:50:16,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 00:50:16,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 00:50:16,195 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 00:50:16,195 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 00:50:16,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/forester-heap/sll-optional-2.i Unable to find full path for "g++" [2024-11-09 00:50:18,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 00:50:18,519 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 00:50:18,520 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/sv-benchmarks/c/forester-heap/sll-optional-2.i [2024-11-09 00:50:18,532 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/data/ed96d971b/8fb913da2a434073a1408846fc32986e/FLAG0c337ac1b [2024-11-09 00:50:18,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/data/ed96d971b/8fb913da2a434073a1408846fc32986e [2024-11-09 00:50:18,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 00:50:18,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 00:50:18,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 00:50:18,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 00:50:18,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 00:50:18,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:50:18" (1/1) ... [2024-11-09 00:50:18,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d378392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:18, skipping insertion in model container [2024-11-09 00:50:18,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:50:18" (1/1) ... [2024-11-09 00:50:18,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 00:50:18,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:50:19,009 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 00:50:19,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:50:19,120 INFO L204 MainTranslator]: Completed translation [2024-11-09 00:50:19,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19 WrapperNode [2024-11-09 00:50:19,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 00:50:19,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 00:50:19,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 00:50:19,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 00:50:19,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,178 INFO L138 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2024-11-09 00:50:19,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 00:50:19,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 00:50:19,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 00:50:19,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 00:50:19,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,206 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 00:50:19,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 00:50:19,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 00:50:19,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 00:50:19,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:50:19,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-09 00:50:19,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-09 00:50:19,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-09 00:50:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 00:50:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 00:50:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 00:50:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 00:50:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 00:50:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 00:50:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 00:50:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 00:50:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 00:50:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 00:50:19,412 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 00:50:19,414 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 00:50:19,755 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-09 00:50:19,755 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 00:50:19,908 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 00:50:19,909 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 00:50:19,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:19 BoogieIcfgContainer [2024-11-09 00:50:19,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 00:50:19,910 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-09 00:50:19,911 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-09 00:50:19,921 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-09 00:50:19,921 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:19" (1/1) ... [2024-11-09 00:50:19,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 00:50:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:50:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 21 states and 30 transitions. [2024-11-09 00:50:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2024-11-09 00:50:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 00:50:19,983 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:50:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:50:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:50:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:50:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:50:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 21 states and 29 transitions. [2024-11-09 00:50:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2024-11-09 00:50:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 00:50:20,392 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:50:20,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:50:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:50:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:50:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:50:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 22 states and 31 transitions. [2024-11-09 00:50:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2024-11-09 00:50:20,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 00:50:20,783 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:50:20,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:50:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:50:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:50:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:50:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 23 states and 32 transitions. [2024-11-09 00:50:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2024-11-09 00:50:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 00:50:20,944 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:50:20,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:50:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:50:21,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 00:50:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:50:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:50:21,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 00:50:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:50:21,432 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2024-11-09 00:50:21,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.11 12:50:21 ImpRootNode [2024-11-09 00:50:21,461 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-09 00:50:21,461 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 00:50:21,461 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 00:50:21,461 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 00:50:21,462 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:19" (3/4) ... [2024-11-09 00:50:21,462 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 00:50:21,495 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-09 00:50:21,495 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 00:50:21,496 INFO L158 Benchmark]: Toolchain (without parser) took 2944.00ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 102.0MB in the end (delta: 42.8MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. [2024-11-09 00:50:21,496 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 111.1MB. Free memory is still 58.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 00:50:21,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.39ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 124.8MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 00:50:21,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.36ms. Allocated memory is still 180.4MB. Free memory was 124.8MB in the beginning and 122.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 00:50:21,498 INFO L158 Benchmark]: Boogie Preprocessor took 36.00ms. Allocated memory is still 180.4MB. Free memory was 122.7MB in the beginning and 121.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 00:50:21,499 INFO L158 Benchmark]: RCFGBuilder took 692.40ms. Allocated memory is still 180.4MB. Free memory was 121.0MB in the beginning and 146.4MB in the end (delta: -25.4MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2024-11-09 00:50:21,499 INFO L158 Benchmark]: CodeCheck took 1550.42ms. Allocated memory is still 180.4MB. Free memory was 146.4MB in the beginning and 104.1MB in the end (delta: 42.3MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2024-11-09 00:50:21,500 INFO L158 Benchmark]: Witness Printer took 33.83ms. Allocated memory is still 180.4MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 00:50:21,502 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, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 47 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - CounterExampleResult [Line: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = ((void*)0) [L998] COND FALSE !(__VERIFIER_nondet_int()) [L998] COND TRUE __VERIFIER_nondet_int() [L998] head->data = 1 [L998] head->opt = head [L999] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1004] x = head VAL [head={-1:0}, x={-1:0}] [L1005] COND FALSE !(x != ((void*)0)) VAL [head={-1:0}, x={-1:0}] [L1005] COND TRUE x != ((void*)0) VAL [head={-1:0}, x={-1:0}] [L1007] EXPR x->data [L1007] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, x={-1:0}] [L1007] COND TRUE !(x->data == 2 && x->opt == x) [L1007] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-optional-2.c", 16, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 111.1MB. Free memory is still 58.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.39ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 124.8MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.36ms. Allocated memory is still 180.4MB. Free memory was 124.8MB in the beginning and 122.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.00ms. Allocated memory is still 180.4MB. Free memory was 122.7MB in the beginning and 121.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 692.40ms. Allocated memory is still 180.4MB. Free memory was 121.0MB in the beginning and 146.4MB in the end (delta: -25.4MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * CodeCheck took 1550.42ms. Allocated memory is still 180.4MB. Free memory was 146.4MB in the beginning and 104.1MB in the end (delta: 42.3MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Witness Printer took 33.83ms. Allocated memory is still 180.4MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-09 00:50:21,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7616c90e-8b5f-4122-8f43-8db57c22e404/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)