./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/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_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/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_6dbb22a3-0a31-418a-b149-6212fcdd837e/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 f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 04:05:47,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 04:05:47,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-11-25 04:05:47,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 04:05:47,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 04:05:47,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 04:05:47,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 04:05:47,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 04:05:47,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 04:05:47,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 04:05:47,444 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 04:05:47,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 04:05:47,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 04:05:47,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 04:05:47,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 04:05:47,444 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 04:05:47,445 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 04:05:47,445 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 04:05:47,446 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 04:05:47,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 04:05:47,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 04:05:47,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 04:05:47,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 04:05:47,448 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 04:05:47,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 04:05:47,448 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_6dbb22a3-0a31-418a-b149-6212fcdd837e/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 -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2024-11-25 04:05:47,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 04:05:47,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 04:05:47,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 04:05:47,856 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 04:05:47,856 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 04:05:47,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2024-11-25 04:05:51,260 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/data/0732e284a/50a96e2be2e3424888ab8f877a8518ec/FLAG486755dfe [2024-11-25 04:05:51,653 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 04:05:51,654 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2024-11-25 04:05:51,684 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/data/0732e284a/50a96e2be2e3424888ab8f877a8518ec/FLAG486755dfe [2024-11-25 04:05:51,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/data/0732e284a/50a96e2be2e3424888ab8f877a8518ec [2024-11-25 04:05:51,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 04:05:51,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 04:05:51,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 04:05:51,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 04:05:51,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 04:05:51,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:05:51" (1/1) ... [2024-11-25 04:05:51,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47333c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:51, skipping insertion in model container [2024-11-25 04:05:51,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:05:51" (1/1) ... [2024-11-25 04:05:51,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 04:05:52,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 04:05:52,232 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 04:05:52,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 04:05:52,346 INFO L204 MainTranslator]: Completed translation [2024-11-25 04:05:52,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52 WrapperNode [2024-11-25 04:05:52,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 04:05:52,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 04:05:52,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 04:05:52,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 04:05:52,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,418 INFO L138 Inliner]: procedures = 129, calls = 80, calls flagged for inlining = 25, calls inlined = 58, statements flattened = 482 [2024-11-25 04:05:52,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 04:05:52,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 04:05:52,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 04:05:52,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 04:05:52,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,455 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 04:05:52,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 04:05:52,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 04:05:52,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 04:05:52,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:05:52" (1/1) ... [2024-11-25 04:05:52,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 04:05:52,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 04:05:52,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 04:05:52,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 04:05:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-25 04:05:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 04:05:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-25 04:05:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-25 04:05:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-25 04:05:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-25 04:05:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-25 04:05:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 04:05:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 04:05:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 04:05:52,739 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 04:05:52,742 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 04:05:53,515 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-11-25 04:05:53,516 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 04:05:53,754 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 04:05:53,755 INFO L312 CfgBuilder]: Removed 37 assume(true) statements. [2024-11-25 04:05:53,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:05:53 BoogieIcfgContainer [2024-11-25 04:05:53,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 04:05:53,756 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 04:05:53,756 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 04:05:53,768 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 04:05:53,769 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:05:53" (1/1) ... [2024-11-25 04:05:53,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 04:05:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:05:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 164 states and 264 transitions. [2024-11-25 04:05:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 264 transitions. [2024-11-25 04:05:53,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-25 04:05:53,858 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:05:53,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:05:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:05:54,111 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 04:05:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:05:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 163 states and 255 transitions. [2024-11-25 04:05:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 255 transitions. [2024-11-25 04:05:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-25 04:05:54,182 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:05:54,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:05:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:05:55,938 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 04:05:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:05:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 168 states and 264 transitions. [2024-11-25 04:05:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 264 transitions. [2024-11-25 04:05:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-25 04:05:56,446 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:05:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:05:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:05:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 04:05:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:05:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 161 states and 254 transitions. [2024-11-25 04:05:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 254 transitions. [2024-11-25 04:05:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-25 04:05:58,100 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:05:58,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:05:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:05:59,032 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 04:06:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:06:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 167 states and 261 transitions. [2024-11-25 04:06:01,839 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 261 transitions. [2024-11-25 04:06:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-25 04:06:01,846 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:06:01,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:06:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:06:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-25 04:06:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:06:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 169 states and 266 transitions. [2024-11-25 04:06:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 266 transitions. [2024-11-25 04:06:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-25 04:06:04,359 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:06:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:06:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:06:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-25 04:06:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:06:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 157 states and 246 transitions. [2024-11-25 04:06:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 246 transitions. [2024-11-25 04:06:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-25 04:06:05,463 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:06:05,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:06:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:06:05,535 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 04:06:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:06:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:06:06,286 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 04:06:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:06:06,710 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2024-11-25 04:06:06,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 04:06:06 ImpRootNode [2024-11-25 04:06:06,758 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 04:06:06,759 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 04:06:06,759 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 04:06:06,760 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 04:06:06,761 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:05:53" (3/4) ... [2024-11-25 04:06:06,762 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-25 04:06:06,817 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 27. [2024-11-25 04:06:06,897 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-25 04:06:06,898 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-25 04:06:06,898 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 04:06:06,899 INFO L158 Benchmark]: Toolchain (without parser) took 15180.10ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 89.8MB in the beginning and 58.5MB in the end (delta: 31.3MB). Peak memory consumption was 89.8MB. Max. memory is 16.1GB. [2024-11-25 04:06:06,900 INFO L158 Benchmark]: CDTParser took 3.39ms. Allocated memory is still 83.9MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:06:06,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.47ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 71.1MB in the end (delta: 18.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 04:06:06,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.26ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 68.1MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 04:06:06,901 INFO L158 Benchmark]: Boogie Preprocessor took 61.68ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 65.1MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:06:06,902 INFO L158 Benchmark]: RCFGBuilder took 1272.98ms. Allocated memory is still 117.4MB. Free memory was 64.8MB in the beginning and 60.1MB in the end (delta: 4.7MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2024-11-25 04:06:06,902 INFO L158 Benchmark]: CodeCheck took 13002.56ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 60.1MB in the beginning and 64.0MB in the end (delta: -3.9MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2024-11-25 04:06:06,903 INFO L158 Benchmark]: Witness Printer took 139.03ms. Allocated memory is still 176.2MB. Free memory was 64.0MB in the beginning and 58.5MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 04:06:06,905 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 164 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 12.9s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 444 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 379 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 261 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 428 IncrementalHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 118 mSDtfsCounter, 428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 840 GetRequests, 738 SyntacticMatches, 22 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 1222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - CounterExampleResult [Line: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L639] const struct node *p1, *p2; [L640] CALL, EXPR create_sll(&p1, &p2) [L588] struct node *list = ((void *)0); VAL [list={26069:0}, pp1={26068:0}, pp2={26070:0}] [L590] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L590] RET chain_node(&list) [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L597] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L597] RET chain_node(&list) [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] RET, EXPR create_sll(&p1, &p2) [L640] struct node *list = create_sll(&p1, &p2); [L641] COND FALSE !(0) [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) [L626] COND FALSE !(!(beg)) VAL [beg={26066:0}, end={26066:0}] [L626] COND FALSE !(0) VAL [beg={26066:0}, end={26066:0}] [L627] COND FALSE !(!(end)) VAL [beg={26066:0}, end={26066:0}] [L627] COND FALSE !(0) VAL [beg={26066:0}, end={26066:0}] [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg VAL [beg={0:0}, end={26066:0}] [L629] COND TRUE !(beg) [L629] CALL fail() [L565] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_to_dll_rev-1.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.39ms. Allocated memory is still 83.9MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 626.47ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 71.1MB in the end (delta: 18.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.26ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 68.1MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.68ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 65.1MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1272.98ms. Allocated memory is still 117.4MB. Free memory was 64.8MB in the beginning and 60.1MB in the end (delta: 4.7MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. * CodeCheck took 13002.56ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 60.1MB in the beginning and 64.0MB in the end (delta: -3.9MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. * Witness Printer took 139.03ms. Allocated memory is still 176.2MB. Free memory was 64.0MB in the beginning and 58.5MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-25 04:06:06,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dbb22a3-0a31-418a-b149-6212fcdd837e/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)