./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN --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-53f42b1 [2021-11-21 06:28:15,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 06:28:15,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 06:28:15,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 06:28:15,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 06:28:15,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 06:28:15,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 06:28:15,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 06:28:15,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 06:28:15,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 06:28:15,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 06:28:15,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 06:28:15,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 06:28:15,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 06:28:15,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 06:28:15,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 06:28:15,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 06:28:15,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 06:28:15,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 06:28:15,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 06:28:15,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 06:28:15,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 06:28:15,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 06:28:15,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 06:28:15,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 06:28:15,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 06:28:15,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 06:28:15,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 06:28:15,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 06:28:15,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 06:28:15,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 06:28:15,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 06:28:15,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 06:28:15,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 06:28:15,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 06:28:15,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 06:28:15,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 06:28:15,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 06:28:15,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 06:28:15,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 06:28:15,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 06:28:15,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/config/svcomp-Overflow-64bit-Kojak_Default.epf [2021-11-21 06:28:15,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 06:28:15,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 06:28:15,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 06:28:15,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-21 06:28:15,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 06:28:15,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 06:28:15,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 06:28:15,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 06:28:15,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 06:28:15,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 06:28:15,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 06:28:15,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 06:28:15,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 06:28:15,723 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 06:28:15,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 06:28:15,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 06:28:15,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 06:28:15,724 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-21 06:28:15,724 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-21 06:28:15,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 06:28:15,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 06:28:15,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 06:28:15,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 06:28:15,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 06:28:15,725 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-21 06:28:15,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 06:28:15,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 06:28:15,726 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_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87534de3d459ca9409f2dccef0ebbf0eeafdc010d6ce5fc12d39e28438c1bbdf [2021-11-21 06:28:16,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 06:28:16,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 06:28:16,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 06:28:16,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 06:28:16,039 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 06:28:16,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-11-21 06:28:16,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/data/01ce72fad/6a49c403542f43f589620de0a738efc6/FLAGb3d9702d4 [2021-11-21 06:28:16,597 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 06:28:16,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-11-21 06:28:16,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/data/01ce72fad/6a49c403542f43f589620de0a738efc6/FLAGb3d9702d4 [2021-11-21 06:28:16,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/data/01ce72fad/6a49c403542f43f589620de0a738efc6 [2021-11-21 06:28:16,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 06:28:16,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 06:28:16,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 06:28:16,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 06:28:16,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 06:28:16,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:28:16" (1/1) ... [2021-11-21 06:28:16,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d500e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:16, skipping insertion in model container [2021-11-21 06:28:16,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:28:16" (1/1) ... [2021-11-21 06:28:16,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 06:28:17,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 06:28:17,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 06:28:17,172 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 06:28:17,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 06:28:17,200 INFO L208 MainTranslator]: Completed translation [2021-11-21 06:28:17,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17 WrapperNode [2021-11-21 06:28:17,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 06:28:17,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 06:28:17,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 06:28:17,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 06:28:17,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,236 INFO L137 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-21 06:28:17,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 06:28:17,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 06:28:17,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 06:28:17,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 06:28:17,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 06:28:17,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 06:28:17,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 06:28:17,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 06:28:17,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 06:28:17,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/z3 [2021-11-21 06:28:17,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-21 06:28:17,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-21 06:28:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 06:28:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2021-11-21 06:28:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2021-11-21 06:28:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 06:28:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 06:28:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 06:28:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 06:28:17,420 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 06:28:17,422 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 06:28:17,572 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 06:28:17,618 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 06:28:17,618 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 06:28:17,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:28:17 BoogieIcfgContainer [2021-11-21 06:28:17,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 06:28:17,621 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-21 06:28:17,622 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-21 06:28:17,642 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-21 06:28:17,642 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:28:17" (1/1) ... [2021-11-21 06:28:17,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 06:28:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:28:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2021-11-21 06:28:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-21 06:28:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 06:28:17,743 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:28:17,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:28:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:28:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 06:28:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:28:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 20 states and 24 transitions. [2021-11-21 06:28:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-21 06:28:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 06:28:18,001 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:28:18,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:28:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:28:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 06:28:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:28:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 19 states and 23 transitions. [2021-11-21 06:28:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-21 06:28:18,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 06:28:18,120 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:28:18,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:28:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 06:28:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 06:28:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 06:28:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2021-11-21 06:28:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-21 06:28:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 06:28:18,306 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 06:28:18,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 06:28:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 06:28:18,335 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 06:28:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 06:28:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 06:28:18,445 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 06:28:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 06:28:18,501 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2021-11-21 06:28:18,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:28:18 ImpRootNode [2021-11-21 06:28:18,539 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-21 06:28:18,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 06:28:18,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 06:28:18,540 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 06:28:18,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:28:17" (3/4) ... [2021-11-21 06:28:18,542 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 06:28:18,602 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/witness.graphml [2021-11-21 06:28:18,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 06:28:18,607 INFO L158 Benchmark]: Toolchain (without parser) took 1625.47ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 58.0MB in the beginning and 75.2MB in the end (delta: -17.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 06:28:18,608 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 94.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 06:28:18,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.22ms. Allocated memory is still 94.4MB. Free memory was 57.8MB in the beginning and 70.2MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 06:28:18,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.12ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 68.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 06:28:18,612 INFO L158 Benchmark]: Boogie Preprocessor took 23.10ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 06:28:18,615 INFO L158 Benchmark]: RCFGBuilder took 359.99ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 54.5MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 06:28:18,615 INFO L158 Benchmark]: CodeCheck took 917.41ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 54.5MB in the beginning and 77.3MB in the end (delta: -22.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 06:28:18,616 INFO L158 Benchmark]: Witness Printer took 65.88ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 75.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 06:28:18,619 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 0.52ms. Allocated memory is still 94.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.22ms. Allocated memory is still 94.4MB. Free memory was 57.8MB in the beginning and 70.2MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.12ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 68.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.10ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 359.99ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 54.5MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 917.41ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 54.5MB in the beginning and 77.3MB in the end (delta: -22.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 65.88ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 75.2MB 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! [2021-11-21 06:28:18,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd009f55-59d5-4d20-8516-e8138a12a05c/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)