./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-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_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/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_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/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_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/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 f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 03:04:22,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 03:04:22,131 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-11-25 03:04:22,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 03:04:22,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 03:04:22,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 03:04:22,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 03:04:22,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 03:04:22,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 03:04:22,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 03:04:22,181 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 03:04:22,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 03:04:22,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 03:04:22,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 03:04:22,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 03:04:22,182 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-25 03:04:22,183 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-25 03:04:22,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 03:04:22,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 03:04:22,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-25 03:04:22,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 03:04:22,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 03:04:22,183 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 03:04:22,184 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 03:04:22,184 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 03:04:22,184 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 03:04:22,184 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 03:04:22,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 03:04:22,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 03:04:22,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 03:04:22,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 03:04:22,185 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 03:04:22,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 03:04:22,185 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_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/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 -> f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 [2024-11-25 03:04:22,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 03:04:22,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 03:04:22,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 03:04:22,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 03:04:22,514 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 03:04:22,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/list-properties/alternating_list-2.i [2024-11-25 03:04:25,523 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/data/c4d89569e/31a82696c2ab4bcd8cb72ed9d52f18b7/FLAG22b8ab7d4 [2024-11-25 03:04:25,918 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 03:04:25,918 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/sv-benchmarks/c/list-properties/alternating_list-2.i [2024-11-25 03:04:25,937 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/data/c4d89569e/31a82696c2ab4bcd8cb72ed9d52f18b7/FLAG22b8ab7d4 [2024-11-25 03:04:25,959 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/data/c4d89569e/31a82696c2ab4bcd8cb72ed9d52f18b7 [2024-11-25 03:04:25,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 03:04:25,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 03:04:25,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 03:04:25,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 03:04:25,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 03:04:25,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:04:25" (1/1) ... [2024-11-25 03:04:25,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ca08a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:25, skipping insertion in model container [2024-11-25 03:04:25,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:04:25" (1/1) ... [2024-11-25 03:04:26,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 03:04:26,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 03:04:26,336 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 03:04:26,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 03:04:26,415 INFO L204 MainTranslator]: Completed translation [2024-11-25 03:04:26,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26 WrapperNode [2024-11-25 03:04:26,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 03:04:26,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 03:04:26,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 03:04:26,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 03:04:26,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,454 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2024-11-25 03:04:26,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 03:04:26,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 03:04:26,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 03:04:26,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 03:04:26,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,472 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 03:04:26,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 03:04:26,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 03:04:26,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 03:04:26,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 03:04:26,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 03:04:26,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 03:04:26,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 03:04:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-25 03:04:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-25 03:04:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-25 03:04:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 03:04:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-25 03:04:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-25 03:04:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-25 03:04:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 03:04:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 03:04:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 03:04:26,688 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 03:04:26,690 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 03:04:26,853 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-25 03:04:26,854 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 03:04:26,909 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 03:04:26,909 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-25 03:04:26,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:04:26 BoogieIcfgContainer [2024-11-25 03:04:26,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 03:04:26,910 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 03:04:26,910 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 03:04:26,922 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 03:04:26,922 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:04:26" (1/1) ... [2024-11-25 03:04:26,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 03:04:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:04:26,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 26 states and 37 transitions. [2024-11-25 03:04:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2024-11-25 03:04:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-25 03:04:26,993 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:04:26,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:04:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 03:04:27,167 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 03:04:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:04:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2024-11-25 03:04:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-25 03:04:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-25 03:04:27,210 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:04:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:04:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 03:04:27,496 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 03:04:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:04:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 36 states and 49 transitions. [2024-11-25 03:04:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2024-11-25 03:04:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-25 03:04:27,613 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:04:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:04:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 03:04:27,893 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 03:04:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:04:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 40 states and 55 transitions. [2024-11-25 03:04:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2024-11-25 03:04:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-25 03:04:28,344 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:04:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:04:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 03:04:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 03:04:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:04:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 45 states and 63 transitions. [2024-11-25 03:04:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2024-11-25 03:04:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-25 03:04:29,594 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:04:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:04:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:04:29,624 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 03:04:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:04:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:04:29,721 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 03:04:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:04:29,785 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2024-11-25 03:04:29,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 03:04:29 ImpRootNode [2024-11-25 03:04:29,819 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 03:04:29,820 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 03:04:29,820 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 03:04:29,820 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 03:04:29,821 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:04:26" (3/4) ... [2024-11-25 03:04:29,822 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-25 03:04:29,860 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 11. [2024-11-25 03:04:29,923 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-25 03:04:29,927 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-25 03:04:29,927 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 03:04:29,928 INFO L158 Benchmark]: Toolchain (without parser) took 3963.43ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 83.0MB in the end (delta: 9.2MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-11-25 03:04:29,928 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:04:29,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.32ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 74.9MB in the end (delta: 17.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 03:04:29,929 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.35ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 73.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:04:29,929 INFO L158 Benchmark]: Boogie Preprocessor took 25.53ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 72.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:04:29,929 INFO L158 Benchmark]: RCFGBuilder took 428.51ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 57.4MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-25 03:04:29,929 INFO L158 Benchmark]: CodeCheck took 2909.15ms. Allocated memory is still 117.4MB. Free memory was 57.4MB in the beginning and 87.4MB in the end (delta: -30.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:04:29,930 INFO L158 Benchmark]: Witness Printer took 107.00ms. Allocated memory is still 117.4MB. Free memory was 87.4MB in the beginning and 83.0MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:04:29,934 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, 26 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 208 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 152 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 190 IncrementalHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 100 mSDtfsCounter, 190 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 2 [L540] flag = 0 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] flag = 1 VAL [a={-1:0}, flag=1, p={-1:0}] [L553] EXPR p->h VAL [a={-1:0}, flag=1, p={-1:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}] [L556] COND TRUE p->h != 1 [L573] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "alternating_list-2.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.32ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 74.9MB in the end (delta: 17.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.35ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 73.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.53ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 72.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 428.51ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 57.4MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2909.15ms. Allocated memory is still 117.4MB. Free memory was 57.4MB in the beginning and 87.4MB in the end (delta: -30.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 107.00ms. Allocated memory is still 117.4MB. Free memory was 87.4MB in the beginning and 83.0MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-25 03:04:29,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e6d7ec-f1b6-4aeb-aba1-de536f95e860/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)