./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 87534de3d459ca9409f2dccef0ebbf0eeafdc010d6ce5fc12d39e28438c1bbdf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:42:52,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:42:52,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:42:52,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:42:52,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:42:52,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:42:52,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:42:52,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:42:52,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:42:52,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:42:52,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:42:52,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:42:52,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:42:52,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:42:52,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:42:52,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:42:52,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:42:52,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:42:52,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:42:52,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:42:52,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:42:52,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:42:52,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:42:52,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:42:52,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:42:52,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:42:52,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:42:52,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:42:52,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:42:52,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:42:52,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:42:52,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:42:52,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:42:52,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:42:52,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:42:52,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:42:52,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:42:52,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:42:52,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:42:52,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:42:52,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:42:52,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/config/svcomp-Overflow-64bit-Kojak_Default.epf [2021-11-23 01:42:52,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:42:52,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:42:52,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:42:52,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:42:52,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:42:52,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:42:52,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:42:52,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:42:52,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:42:52,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:42:52,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:42:52,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:42:52,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:42:52,963 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 01:42:52,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:42:52,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:42:52,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:42:52,964 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:42:52,964 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:42:52,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:42:52,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:42:52,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:42:52,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:42:52,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:42:52,965 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:42:52,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:42:52,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:42:52,966 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_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87534de3d459ca9409f2dccef0ebbf0eeafdc010d6ce5fc12d39e28438c1bbdf [2021-11-23 01:42:53,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:42:53,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:42:53,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:42:53,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:42:53,300 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:42:53,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-11-23 01:42:53,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/data/6ff8998f7/aba176f7ec4346c1b9bd3fde279194d0/FLAG3d433828e [2021-11-23 01:42:53,885 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:42:53,885 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-11-23 01:42:53,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/data/6ff8998f7/aba176f7ec4346c1b9bd3fde279194d0/FLAG3d433828e [2021-11-23 01:42:54,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/data/6ff8998f7/aba176f7ec4346c1b9bd3fde279194d0 [2021-11-23 01:42:54,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:42:54,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:42:54,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:42:54,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:42:54,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:42:54,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49db63bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54, skipping insertion in model container [2021-11-23 01:42:54,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:42:54,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:42:54,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:42:54,485 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:42:54,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:42:54,533 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:42:54,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54 WrapperNode [2021-11-23 01:42:54,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:42:54,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:42:54,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:42:54,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:42:54,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,585 INFO L137 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-23 01:42:54,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:42:54,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:42:54,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:42:54,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:42:54,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:42:54,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:42:54,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:42:54,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:42:54,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:42:54" (1/1) ... [2021-11-23 01:42:54,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:42:54,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:42:54,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:42:54,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2021-11-23 01:42:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2021-11-23 01:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:42:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:42:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:42:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:42:54,794 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:42:54,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:42:54,939 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:42:55,012 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:42:55,013 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:42:55,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:42:55 BoogieIcfgContainer [2021-11-23 01:42:55,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:42:55,032 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:42:55,032 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:42:55,042 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:42:55,043 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:42:55" (1/1) ... [2021-11-23 01:42:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:42:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:42:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2021-11-23 01:42:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-23 01:42:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 01:42:55,163 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:42:55,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:42:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:42:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:42:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:42:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 20 states and 24 transitions. [2021-11-23 01:42:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-23 01:42:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 01:42:55,424 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:42:55,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:42:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:42:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:42:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:42:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 19 states and 23 transitions. [2021-11-23 01:42:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-23 01:42:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 01:42:55,559 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:42:55,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:42:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:42:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 01:42:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:42:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2021-11-23 01:42:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-23 01:42:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:42:55,694 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:42:55,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:42:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:42:55,728 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:42:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:42:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:42:55,828 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:42:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:42:55,877 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2021-11-23 01:42:55,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:42:55 ImpRootNode [2021-11-23 01:42:55,922 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:42:55,923 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:42:55,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:42:55,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:42:55,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:42:55" (3/4) ... [2021-11-23 01:42:55,927 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 01:42:55,992 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:42:55,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:42:55,994 INFO L158 Benchmark]: Toolchain (without parser) took 1727.07ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 87.2MB in the beginning and 120.3MB in the end (delta: -33.1MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2021-11-23 01:42:55,994 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:42:55,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.71ms. Allocated memory is still 117.4MB. Free memory was 86.9MB in the beginning and 91.9MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:42:55,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.35ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 90.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:42:55,997 INFO L158 Benchmark]: Boogie Preprocessor took 55.11ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 89.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:42:55,998 INFO L158 Benchmark]: RCFGBuilder took 371.29ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 76.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 01:42:55,999 INFO L158 Benchmark]: CodeCheck took 889.75ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 76.2MB in the beginning and 123.0MB in the end (delta: -46.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:42:55,999 INFO L158 Benchmark]: Witness Printer took 69.78ms. Allocated memory is still 155.2MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:42:56,003 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 2 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 11 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L47] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND FALSE !(length < 1) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L47] RET, EXPR build_nondet_String() VAL [build_nondet_String()={26286:0}] [L47] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND FALSE !(length < 1) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L47] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}, build_nondet_String()={26286:0}] [L47] CALL cstrncmp(build_nondet_String(),build_nondet_String(),__VERIFIER_nondet_int()) [L28] unsigned char uc1, uc2; VAL [\old(n)=-2147483648, n=-2147483648, s1={26286:0}, s1={26286:0}, s2={-1:0}, s2={-1:0}] [L30] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648, s1={26286:0}, s1={26286:0}, s2={-1:0}, s2={-1:0}] [L33] n-- VAL [\old(n)=-2147483648, n=-2147483648, n--=-2147483648, s1={26286:0}, s1={26286:0}, s2={-1:0}, s2={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.71ms. Allocated memory is still 117.4MB. Free memory was 86.9MB in the beginning and 91.9MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.35ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 90.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.11ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 89.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.29ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 76.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 889.75ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 76.2MB in the beginning and 123.0MB in the end (delta: -46.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 69.78ms. Allocated memory is still 155.2MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 01:42:56,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59ecad25-8e27-4420-a4ed-d0646c29d1a8/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)