./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/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_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/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_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/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_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/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 f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 22:44:57,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 22:44:57,237 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2024-11-08 22:44:57,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 22:44:57,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 22:44:57,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 22:44:57,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 22:44:57,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 22:44:57,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 22:44:57,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 22:44:57,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 22:44:57,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 22:44:57,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 22:44:57,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 22:44:57,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 22:44:57,293 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 22:44:57,296 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 22:44:57,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 22:44:57,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 22:44:57,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 22:44:57,301 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 22:44:57,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 22:44:57,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 22:44:57,302 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 22:44:57,302 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 22:44:57,303 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 22:44:57,303 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 22:44:57,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 22:44:57,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:44:57,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 22:44:57,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 22:44:57,304 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 22:44:57,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 22:44:57,307 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_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2024-11-08 22:44:57,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 22:44:57,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 22:44:57,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 22:44:57,625 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 22:44:57,626 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 22:44:57,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i Unable to find full path for "g++" [2024-11-08 22:44:59,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 22:44:59,985 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 22:44:59,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2024-11-08 22:45:00,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/data/af10e053f/6cc8d5bb51884664ae6892abc26154f4/FLAG1bf25b433 [2024-11-08 22:45:00,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/data/af10e053f/6cc8d5bb51884664ae6892abc26154f4 [2024-11-08 22:45:00,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 22:45:00,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 22:45:00,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 22:45:00,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 22:45:00,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 22:45:00,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762b7594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00, skipping insertion in model container [2024-11-08 22:45:00,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 22:45:00,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:45:00,543 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 22:45:00,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:45:00,632 INFO L204 MainTranslator]: Completed translation [2024-11-08 22:45:00,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00 WrapperNode [2024-11-08 22:45:00,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 22:45:00,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 22:45:00,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 22:45:00,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 22:45:00,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,698 INFO L138 Inliner]: procedures = 129, calls = 80, calls flagged for inlining = 25, calls inlined = 58, statements flattened = 484 [2024-11-08 22:45:00,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 22:45:00,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 22:45:00,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 22:45:00,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 22:45:00,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 22:45:00,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 22:45:00,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 22:45:00,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 22:45:00,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:45:00" (1/1) ... [2024-11-08 22:45:00,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:45:00,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 22:45:00,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 22:45:00,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 22:45:00,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 22:45:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 22:45:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 22:45:00,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-08 22:45:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-08 22:45:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 22:45:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-08 22:45:00,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 22:45:00,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 22:45:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 22:45:01,024 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 22:45:01,026 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 22:45:01,740 INFO L? ?]: Removed 166 outVars from TransFormulas that were not future-live. [2024-11-08 22:45:01,740 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 22:45:01,898 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 22:45:01,899 INFO L316 CfgBuilder]: Removed 52 assume(true) statements. [2024-11-08 22:45:01,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:45:01 BoogieIcfgContainer [2024-11-08 22:45:01,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 22:45:01,901 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 22:45:01,901 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 22:45:01,911 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 22:45:01,911 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:45:01" (1/1) ... [2024-11-08 22:45:01,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 22:45:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:45:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 182 states and 291 transitions. [2024-11-08 22:45:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 291 transitions. [2024-11-08 22:45:01,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 22:45:01,984 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:45:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:45:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:45:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:45:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:45:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 181 states and 282 transitions. [2024-11-08 22:45:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 282 transitions. [2024-11-08 22:45:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 22:45:02,208 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:45:02,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:45:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:45:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:45:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:45:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 186 states and 291 transitions. [2024-11-08 22:45:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 291 transitions. [2024-11-08 22:45:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 22:45:03,990 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:45:03,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:45:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:45:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:45:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:45:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 192 states and 300 transitions. [2024-11-08 22:45:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 300 transitions. [2024-11-08 22:45:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 22:45:06,874 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:45:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:45:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:45:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 22:45:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:45:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 193 states and 301 transitions. [2024-11-08 22:45:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 301 transitions. [2024-11-08 22:45:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 22:45:09,730 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:45:09,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:45:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:45:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 22:45:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:45:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 178 states and 280 transitions. [2024-11-08 22:45:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 280 transitions. [2024-11-08 22:45:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 22:45:13,791 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:45:13,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:45:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:45:13,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:45:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:45:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:45:14,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:45:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:45:14,730 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-11-08 22:45:14,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 10:45:14 ImpRootNode [2024-11-08 22:45:14,766 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 22:45:14,767 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 22:45:14,767 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 22:45:14,767 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 22:45:14,768 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:45:01" (3/4) ... [2024-11-08 22:45:14,769 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 22:45:14,841 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 22:45:14,841 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 22:45:14,842 INFO L158 Benchmark]: Toolchain (without parser) took 14803.09ms. Allocated memory was 182.5MB in the beginning and 272.6MB in the end (delta: 90.2MB). Free memory was 142.6MB in the beginning and 107.4MB in the end (delta: 35.2MB). Peak memory consumption was 125.9MB. Max. memory is 16.1GB. [2024-11-08 22:45:14,843 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:45:14,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.10ms. Allocated memory is still 182.5MB. Free memory was 142.6MB in the beginning and 121.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 22:45:14,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.60ms. Allocated memory is still 182.5MB. Free memory was 121.6MB in the beginning and 118.5MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:45:14,844 INFO L158 Benchmark]: Boogie Preprocessor took 57.53ms. Allocated memory is still 182.5MB. Free memory was 118.5MB in the beginning and 114.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 22:45:14,844 INFO L158 Benchmark]: RCFGBuilder took 1139.82ms. Allocated memory is still 182.5MB. Free memory was 114.8MB in the beginning and 122.9MB in the end (delta: -8.1MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2024-11-08 22:45:14,844 INFO L158 Benchmark]: CodeCheck took 12865.27ms. Allocated memory was 182.5MB in the beginning and 272.6MB in the end (delta: 90.2MB). Free memory was 122.9MB in the beginning and 110.6MB in the end (delta: 12.4MB). Peak memory consumption was 102.4MB. Max. memory is 16.1GB. [2024-11-08 22:45:14,845 INFO L158 Benchmark]: Witness Printer took 74.64ms. Allocated memory is still 272.6MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:45:14,847 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, 182 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 12.8s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 394 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 346 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 247 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 410 IncrementalHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 99 mSDtfsCounter, 410 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 727 GetRequests, 628 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 1/4 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - 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={3190:0}, pp1={11160:0}, pp2={11159:0}] [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); [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) [L626] COND FALSE !(!(beg)) VAL [beg={-1:0}, end={-1:0}] [L627] COND FALSE !(!(end)) VAL [beg={-1:0}, end={-1:0}] [L628] EXPR beg->next [L628] beg = beg->next [L628] COND FALSE !(end != beg) VAL [beg={0:0}, end={-1:0}] [L628] COND TRUE end != beg VAL [beg={0:0}, end={-1:0}] [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 0.24ms. Allocated memory is still 130.0MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.10ms. Allocated memory is still 182.5MB. Free memory was 142.6MB in the beginning and 121.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.60ms. Allocated memory is still 182.5MB. Free memory was 121.6MB in the beginning and 118.5MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.53ms. Allocated memory is still 182.5MB. Free memory was 118.5MB in the beginning and 114.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1139.82ms. Allocated memory is still 182.5MB. Free memory was 114.8MB in the beginning and 122.9MB in the end (delta: -8.1MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * CodeCheck took 12865.27ms. Allocated memory was 182.5MB in the beginning and 272.6MB in the end (delta: 90.2MB). Free memory was 122.9MB in the beginning and 110.6MB in the end (delta: 12.4MB). Peak memory consumption was 102.4MB. Max. memory is 16.1GB. * Witness Printer took 74.64ms. Allocated memory is still 272.6MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 22:45:14,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26a0b7fe-6903-418e-a8b3-37ec7aa9040e/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)