./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4 --witnessprinter.witness.filename witness.graphml --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 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 23:22:56,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 23:22:56,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 23:22:56,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 23:22:56,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 23:22:56,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 23:22:56,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 23:22:56,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 23:22:56,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 23:22:56,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 23:22:56,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 23:22:56,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 23:22:56,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 23:22:56,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 23:22:56,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 23:22:56,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 23:22:56,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 23:22:56,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 23:22:56,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 23:22:56,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 23:22:56,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 23:22:56,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 23:22:56,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 23:22:56,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 23:22:56,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 23:22:56,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 23:22:56,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 23:22:56,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 23:22:56,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 23:22:56,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 23:22:56,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 23:22:56,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 23:22:56,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 23:22:56,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 23:22:56,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 23:22:56,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 23:22:56,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 23:22:56,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 23:22:56,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 23:22:56,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 23:22:56,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 23:22:56,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2022-12-14 23:22:56,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 23:22:56,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 23:22:56,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 23:22:56,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 23:22:56,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 23:22:56,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 23:22:56,724 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 23:22:56,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 23:22:56,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 23:22:56,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 23:22:56,724 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 23:22:56,725 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 23:22:56,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 23:22:56,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 23:22:56,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 23:22:56,725 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 23:22:56,725 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 23:22:56,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 23:22:56,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 23:22:56,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 23:22:56,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 23:22:56,726 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 23:22:56,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 23:22:56,727 INFO L138 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_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c [2022-12-14 23:22:56,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 23:22:56,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 23:22:56,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 23:22:56,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 23:22:56,954 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 23:22:56,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/list-properties/splice-1.i [2022-12-14 23:22:59,467 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 23:22:59,659 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 23:22:59,660 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/sv-benchmarks/c/list-properties/splice-1.i [2022-12-14 23:22:59,669 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/data/07f8f11c5/a2a05588d8c64f0996fef38501bfca5c/FLAGf24589e44 [2022-12-14 23:22:59,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/data/07f8f11c5/a2a05588d8c64f0996fef38501bfca5c [2022-12-14 23:22:59,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 23:22:59,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 23:22:59,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 23:22:59,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 23:22:59,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 23:22:59,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:22:59" (1/1) ... [2022-12-14 23:22:59,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2672cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:22:59, skipping insertion in model container [2022-12-14 23:22:59,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:22:59" (1/1) ... [2022-12-14 23:22:59,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 23:22:59,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 23:22:59,955 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2022-12-14 23:22:59,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 23:22:59,968 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 23:23:00,001 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2022-12-14 23:23:00,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 23:23:00,022 INFO L208 MainTranslator]: Completed translation [2022-12-14 23:23:00,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00 WrapperNode [2022-12-14 23:23:00,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 23:23:00,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 23:23:00,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 23:23:00,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 23:23:00,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,056 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2022-12-14 23:23:00,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 23:23:00,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 23:23:00,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 23:23:00,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 23:23:00,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 23:23:00,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 23:23:00,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 23:23:00,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 23:23:00,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 23:23:00,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 23:23:00,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 23:23:00,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 23:23:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 23:23:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 23:23:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 23:23:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 23:23:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 23:23:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 23:23:00,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 23:23:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 23:23:00,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 23:23:00,239 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 23:23:00,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 23:23:00,452 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 23:23:00,489 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 23:23:00,489 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 23:23:00,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:23:00 BoogieIcfgContainer [2022-12-14 23:23:00,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 23:23:00,492 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 23:23:00,492 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 23:23:00,499 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 23:23:00,499 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:23:00" (1/1) ... [2022-12-14 23:23:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 23:23:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 64 states and 76 transitions. [2022-12-14 23:23:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2022-12-14 23:23:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 23:23:00,562 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:23:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:23:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 64 states and 75 transitions. [2022-12-14 23:23:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-12-14 23:23:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 23:23:00,692 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:00,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:23:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:23:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 67 states and 80 transitions. [2022-12-14 23:23:00,821 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2022-12-14 23:23:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 23:23:00,822 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:00,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:23:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:23:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 70 states and 85 transitions. [2022-12-14 23:23:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2022-12-14 23:23:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 23:23:01,088 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:01,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:23:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:23:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 74 states and 92 transitions. [2022-12-14 23:23:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2022-12-14 23:23:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 23:23:01,250 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:01,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:23:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:23:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 78 states and 100 transitions. [2022-12-14 23:23:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2022-12-14 23:23:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 23:23:01,619 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:01,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:23:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:23:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 80 states and 103 transitions. [2022-12-14 23:23:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2022-12-14 23:23:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 23:23:01,664 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:01,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:23:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:23:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 82 states and 106 transitions. [2022-12-14 23:23:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2022-12-14 23:23:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 23:23:01,728 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:01,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 23:23:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 23:23:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 23:23:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 85 states and 113 transitions. [2022-12-14 23:23:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 113 transitions. [2022-12-14 23:23:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 23:23:02,096 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 23:23:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 23:23:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 23:23:02,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 23:23:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 23:23:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 23:23:02,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 23:23:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 23:23:02,167 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2022-12-14 23:23:02,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 11:23:02 ImpRootNode [2022-12-14 23:23:02,187 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 23:23:02,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 23:23:02,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 23:23:02,187 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 23:23:02,188 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:23:00" (3/4) ... [2022-12-14 23:23:02,189 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 23:23:02,213 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 23:23:02,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 23:23:02,214 INFO L158 Benchmark]: Toolchain (without parser) took 2527.97ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 83.5MB in the beginning and 89.5MB in the end (delta: -5.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2022-12-14 23:23:02,214 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 58.5MB in the beginning and 58.3MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 23:23:02,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.00ms. Allocated memory is still 115.3MB. Free memory was 83.1MB in the beginning and 66.4MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 23:23:02,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.53ms. Allocated memory is still 115.3MB. Free memory was 65.9MB in the beginning and 64.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 23:23:02,216 INFO L158 Benchmark]: Boogie Preprocessor took 27.03ms. Allocated memory is still 115.3MB. Free memory was 64.3MB in the beginning and 62.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 23:23:02,216 INFO L158 Benchmark]: RCFGBuilder took 406.57ms. Allocated memory is still 115.3MB. Free memory was 62.2MB in the beginning and 41.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 23:23:02,217 INFO L158 Benchmark]: CodeCheck took 1695.17ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 41.1MB in the beginning and 91.4MB in the end (delta: -50.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 23:23:02,218 INFO L158 Benchmark]: Witness Printer took 25.95ms. Allocated memory is still 138.4MB. Free memory was 91.4MB in the beginning and 89.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 23:23:02,221 INFO L339 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, 64 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 247 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150 mSDsluCounter, 337 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 335 IncrementalHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 138 mSDtfsCounter, 335 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 379 GetRequests, 326 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 531]: 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 l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={23612:0}, flag=1, p={23612:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={23612:0}, flag=1, p={23612:0}] [L555] EXPR a->h VAL [a={23612:0}, a->h=3, flag=1, p={23612:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={23612:0}, flag=1, p={23612:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 58.5MB in the beginning and 58.3MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.00ms. Allocated memory is still 115.3MB. Free memory was 83.1MB in the beginning and 66.4MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.53ms. Allocated memory is still 115.3MB. Free memory was 65.9MB in the beginning and 64.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.03ms. Allocated memory is still 115.3MB. Free memory was 64.3MB in the beginning and 62.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 406.57ms. Allocated memory is still 115.3MB. Free memory was 62.2MB in the beginning and 41.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * CodeCheck took 1695.17ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 41.1MB in the beginning and 91.4MB in the end (delta: -50.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.95ms. Allocated memory is still 138.4MB. Free memory was 91.4MB in the beginning and 89.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-12-14 23:23:02,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdf11365-ad4c-4c11-99ba-09a392248284/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, 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)