./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- 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-6b4ec56 [2022-11-20 09:28:10,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:10,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:10,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:10,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:10,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:10,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:10,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:10,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:10,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:10,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:10,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:10,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:10,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:10,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:10,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:10,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:10,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:10,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:10,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:10,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:10,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:10,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:10,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:10,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:10,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:10,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:10,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:10,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:10,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:10,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:10,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:10,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:10,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:10,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:10,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:10,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:10,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:10,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:10,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:10,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:10,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-20 09:28:11,030 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:11,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:11,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:11,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:11,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:11,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:11,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:11,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:11,032 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:11,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:11,033 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:28:11,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:11,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:11,034 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:28:11,034 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:28:11,034 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 09:28:11,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:11,034 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:28:11,035 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:11,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:11,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:11,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:11,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:11,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:11,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:11,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:11,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:11,037 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_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2022-11-20 09:28:11,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:11,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:11,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:11,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:11,343 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:11,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2022-11-20 09:28:14,488 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:14,716 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:14,717 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2022-11-20 09:28:14,721 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/data/ec9371938/7d0d05daa82646b7a82ad74305f82f73/FLAG2ffc25068 [2022-11-20 09:28:14,736 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/data/ec9371938/7d0d05daa82646b7a82ad74305f82f73 [2022-11-20 09:28:14,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:14,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:14,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:14,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:14,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:14,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:14,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d868b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14, skipping insertion in model container [2022-11-20 09:28:14,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:14,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:14,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:14,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:14,944 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:14,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:14,971 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:14,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14 WrapperNode [2022-11-20 09:28:14,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:14,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:14,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:14,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:14,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:14,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,007 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-20 09:28:15,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:15,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:15,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:15,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:15,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,028 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:15,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:15,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:15,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:15,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (1/1) ... [2022-11-20 09:28:15,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:15,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:15,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:15,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:28:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:28:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2022-11-20 09:28:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2022-11-20 09:28:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:15,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:28:15,203 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:15,205 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:15,428 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:15,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:15,435 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:28:15,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:15 BoogieIcfgContainer [2022-11-20 09:28:15,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:15,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:15,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:15,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:15,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:14" (1/3) ... [2022-11-20 09:28:15,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d2be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:15, skipping insertion in model container [2022-11-20 09:28:15,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:14" (2/3) ... [2022-11-20 09:28:15,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271d2be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:15, skipping insertion in model container [2022-11-20 09:28:15,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:15" (3/3) ... [2022-11-20 09:28:15,449 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2022-11-20 09:28:15,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:15,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-20 09:28:15,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:15,601 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e1b3969, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:15,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 09:28:15,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 16 states have (on average 1.9375) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:28:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 09:28:15,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:15,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 09:28:15,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-20 09:28:15,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2022-11-20 09:28:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:15,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295605173] [2022-11-20 09:28:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:15,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:28:15,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:28:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:28:15,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:28:15,832 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 09:28:15,833 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2022-11-20 09:28:15,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-11-20 09:28:15,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-11-20 09:28:15,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-11-20 09:28:15,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-11-20 09:28:15,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-11-20 09:28:15,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-11-20 09:28:15,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-11-20 09:28:15,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2022-11-20 09:28:15,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2022-11-20 09:28:15,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2022-11-20 09:28:15,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-11-20 09:28:15,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2022-11-20 09:28:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:15,850 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 09:28:15,856 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:28:15,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:28:15 BoogieIcfgContainer [2022-11-20 09:28:15,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:28:15,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:28:15,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:28:15,885 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:28:15,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:15" (3/4) ... [2022-11-20 09:28:15,890 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 09:28:15,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:28:15,891 INFO L158 Benchmark]: Toolchain (without parser) took 1150.38ms. Allocated memory is still 209.7MB. Free memory was 164.7MB in the beginning and 125.7MB in the end (delta: 39.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-20 09:28:15,892 INFO L158 Benchmark]: CDTParser took 1.52ms. Allocated memory is still 142.6MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:28:15,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.08ms. Allocated memory is still 209.7MB. Free memory was 164.1MB in the beginning and 155.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 09:28:15,898 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.58ms. Allocated memory is still 209.7MB. Free memory was 155.0MB in the beginning and 153.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:28:15,900 INFO L158 Benchmark]: Boogie Preprocessor took 23.00ms. Allocated memory is still 209.7MB. Free memory was 153.6MB in the beginning and 152.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:28:15,900 INFO L158 Benchmark]: RCFGBuilder took 405.60ms. Allocated memory is still 209.7MB. Free memory was 152.2MB in the beginning and 140.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:28:15,902 INFO L158 Benchmark]: TraceAbstraction took 442.28ms. Allocated memory is still 209.7MB. Free memory was 139.7MB in the beginning and 125.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 09:28:15,903 INFO L158 Benchmark]: Witness Printer took 5.57ms. Allocated memory is still 209.7MB. Free memory was 125.7MB in the beginning and 125.7MB in the end (delta: 3.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:28:15,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.52ms. Allocated memory is still 142.6MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.08ms. Allocated memory is still 209.7MB. Free memory was 164.1MB in the beginning and 155.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.58ms. Allocated memory is still 209.7MB. Free memory was 155.0MB in the beginning and 153.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.00ms. Allocated memory is still 209.7MB. Free memory was 153.6MB in the beginning and 152.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 405.60ms. Allocated memory is still 209.7MB. Free memory was 152.2MB in the beginning and 140.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 442.28ms. Allocated memory is still 209.7MB. Free memory was 139.7MB in the beginning and 125.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.57ms. Allocated memory is still 209.7MB. Free memory was 125.7MB in the beginning and 125.7MB in the end (delta: 3.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={-1:0}, i=0, upper=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 09:28:15,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- 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-6b4ec56 [2022-11-20 09:28:18,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:18,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:18,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:18,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:18,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:18,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:18,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:18,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:18,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:18,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:18,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:18,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:18,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:18,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:18,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:18,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:18,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:18,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:18,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:18,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:18,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:18,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:18,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:18,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:18,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:18,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:18,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:18,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:18,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:18,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:18,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:18,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:18,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:18,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:18,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:18,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:18,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:18,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:18,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:18,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:18,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2022-11-20 09:28:18,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:18,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:18,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:18,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:18,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:18,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:18,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:18,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:18,509 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:18,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:18,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:28:18,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:18,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:18,510 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:28:18,510 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:28:18,510 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 09:28:18,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:18,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:28:18,511 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 09:28:18,511 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 09:28:18,511 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:18,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:18,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:18,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:18,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:18,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:18,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:18,513 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 09:28:18,513 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 09:28:18,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 09:28:18,513 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2022-11-20 09:28:18,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:18,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:18,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:18,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:18,924 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:18,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2022-11-20 09:28:21,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:22,265 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:22,265 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2022-11-20 09:28:22,276 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/data/1c468f5ad/21fb0ecf29ee4ec4bb30c002b09ee05f/FLAG89c94e02d [2022-11-20 09:28:22,300 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/data/1c468f5ad/21fb0ecf29ee4ec4bb30c002b09ee05f [2022-11-20 09:28:22,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:22,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:22,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:22,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:22,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:22,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae21467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22, skipping insertion in model container [2022-11-20 09:28:22,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:22,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:22,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:22,558 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:22,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:22,597 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:22,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22 WrapperNode [2022-11-20 09:28:22,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:22,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:22,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:22,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:22,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,638 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-11-20 09:28:22,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:22,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:22,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:22,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:22,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:22,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:22,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:22,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:22,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (1/1) ... [2022-11-20 09:28:22,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:22,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:22,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:22,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:28:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 09:28:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2022-11-20 09:28:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2022-11-20 09:28:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 09:28:22,882 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:22,884 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:23,281 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:23,287 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:23,291 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:28:23,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:23 BoogieIcfgContainer [2022-11-20 09:28:23,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:23,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:23,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:23,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:23,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:22" (1/3) ... [2022-11-20 09:28:23,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443e9f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:23, skipping insertion in model container [2022-11-20 09:28:23,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:22" (2/3) ... [2022-11-20 09:28:23,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443e9f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:23, skipping insertion in model container [2022-11-20 09:28:23,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:23" (3/3) ... [2022-11-20 09:28:23,305 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2022-11-20 09:28:23,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:23,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-20 09:28:23,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:23,402 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f380d94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:23,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 09:28:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 16 states have (on average 1.9375) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:28:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 09:28:23,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:23,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 09:28:23,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-20 09:28:23,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2022-11-20 09:28:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:23,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309735351] [2022-11-20 09:28:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:23,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:23,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:23,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:28:23,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 09:28:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:28:23,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:28:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:28:23,588 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 09:28:23,590 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 09:28:23,591 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2022-11-20 09:28:23,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-11-20 09:28:23,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-11-20 09:28:23,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-11-20 09:28:23,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-11-20 09:28:23,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-11-20 09:28:23,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-11-20 09:28:23,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-11-20 09:28:23,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2022-11-20 09:28:23,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2022-11-20 09:28:23,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2022-11-20 09:28:23,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-11-20 09:28:23,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2022-11-20 09:28:23,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:23,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:23,825 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 09:28:23,829 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:28:23,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:28:23 BoogieIcfgContainer [2022-11-20 09:28:23,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:28:23,851 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:28:23,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:28:23,852 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:28:23,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:23" (3/4) ... [2022-11-20 09:28:23,856 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 09:28:23,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:28:23,858 INFO L158 Benchmark]: Toolchain (without parser) took 1546.12ms. Allocated memory is still 77.6MB. Free memory was 56.0MB in the beginning and 42.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-11-20 09:28:23,859 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 77.6MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:28:23,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.14ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 46.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 09:28:23,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.91ms. Allocated memory is still 77.6MB. Free memory was 46.1MB in the beginning and 44.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:28:23,867 INFO L158 Benchmark]: Boogie Preprocessor took 56.56ms. Allocated memory is still 77.6MB. Free memory was 44.5MB in the beginning and 43.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:28:23,867 INFO L158 Benchmark]: RCFGBuilder took 596.42ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 56.1MB in the end (delta: -12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:28:23,868 INFO L158 Benchmark]: TraceAbstraction took 553.65ms. Allocated memory is still 77.6MB. Free memory was 55.4MB in the beginning and 43.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:28:23,869 INFO L158 Benchmark]: Witness Printer took 5.54ms. Allocated memory is still 77.6MB. Free memory was 43.2MB in the beginning and 42.9MB in the end (delta: 321.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:28:23,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 77.6MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.14ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 46.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.91ms. Allocated memory is still 77.6MB. Free memory was 46.1MB in the beginning and 44.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.56ms. Allocated memory is still 77.6MB. Free memory was 44.5MB in the beginning and 43.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 596.42ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 56.1MB in the end (delta: -12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 553.65ms. Allocated memory is still 77.6MB. Free memory was 55.4MB in the beginning and 43.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.54ms. Allocated memory is still 77.6MB. Free memory was 43.2MB in the beginning and 42.9MB in the end (delta: 321.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={1:0}, i=0, upper=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 09:28:23,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76eae24-4094-48d9-b5af-6eb6c68c122c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample