./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg --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 --- [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-b5237d8 [2022-11-21 22:00:30,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 22:00:30,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 22:00:30,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 22:00:30,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 22:00:30,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 22:00:30,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 22:00:30,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 22:00:30,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 22:00:30,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 22:00:30,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 22:00:30,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 22:00:30,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 22:00:30,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 22:00:30,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 22:00:30,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 22:00:30,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 22:00:30,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 22:00:30,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 22:00:30,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 22:00:30,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 22:00:30,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 22:00:30,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 22:00:30,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 22:00:30,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 22:00:30,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 22:00:30,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 22:00:30,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 22:00:30,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 22:00:30,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 22:00:30,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 22:00:30,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 22:00:30,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 22:00:30,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 22:00:30,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 22:00:30,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 22:00:30,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 22:00:30,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 22:00:30,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 22:00:30,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 22:00:30,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 22:00:30,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/config/svcomp-Overflow-64bit-Kojak_Default.epf [2022-11-21 22:00:30,971 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 22:00:30,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 22:00:30,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 22:00:30,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-21 22:00:30,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 22:00:30,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 22:00:30,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 22:00:30,974 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 22:00:30,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 22:00:30,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 22:00:30,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 22:00:30,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 22:00:30,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 22:00:30,976 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 22:00:30,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 22:00:30,976 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 22:00:30,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 22:00:30,977 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-21 22:00:30,977 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-21 22:00:30,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 22:00:30,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-21 22:00:30,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 22:00:30,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 22:00:30,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 22:00:30,978 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-21 22:00:30,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 22:00:30,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 22:00:30,979 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_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87534de3d459ca9409f2dccef0ebbf0eeafdc010d6ce5fc12d39e28438c1bbdf [2022-11-21 22:00:31,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 22:00:31,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 22:00:31,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 22:00:31,309 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 22:00:31,310 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 22:00:31,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2022-11-21 22:00:34,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 22:00:34,416 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 22:00:34,416 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2022-11-21 22:00:34,422 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/data/cfe92ef4b/4daf007127a34c9c90b38fc8e802c381/FLAG5207e282c [2022-11-21 22:00:34,437 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/data/cfe92ef4b/4daf007127a34c9c90b38fc8e802c381 [2022-11-21 22:00:34,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 22:00:34,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 22:00:34,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 22:00:34,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 22:00:34,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 22:00:34,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d743da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34, skipping insertion in model container [2022-11-21 22:00:34,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 22:00:34,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 22:00:34,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 22:00:34,733 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 22:00:34,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 22:00:34,783 INFO L208 MainTranslator]: Completed translation [2022-11-21 22:00:34,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34 WrapperNode [2022-11-21 22:00:34,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 22:00:34,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 22:00:34,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 22:00:34,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 22:00:34,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,827 INFO L138 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-21 22:00:34,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 22:00:34,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 22:00:34,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 22:00:34,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 22:00:34,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 22:00:34,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 22:00:34,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 22:00:34,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 22:00:34,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:00:34" (1/1) ... [2022-11-21 22:00:34,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-21 22:00:34,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/z3 [2022-11-21 22:00:34,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-21 22:00:34,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-21 22:00:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 22:00:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2022-11-21 22:00:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2022-11-21 22:00:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 22:00:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 22:00:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 22:00:34,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 22:00:35,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 22:00:35,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 22:00:35,305 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 22:00:35,366 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 22:00:35,379 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 22:00:35,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:00:35 BoogieIcfgContainer [2022-11-21 22:00:35,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 22:00:35,382 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-21 22:00:35,382 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-21 22:00:35,393 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-21 22:00:35,393 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:00:35" (1/1) ... [2022-11-21 22:00:35,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 22:00:35,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 22:00:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2022-11-21 22:00:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-21 22:00:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 22:00:35,482 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 22:00:35,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 22:00:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 22:00:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 22:00:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 22:00:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 20 states and 24 transitions. [2022-11-21 22:00:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-21 22:00:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 22:00:35,831 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 22:00:35,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 22:00:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 22:00:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 22:00:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 22:00:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 19 states and 23 transitions. [2022-11-21 22:00:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-21 22:00:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 22:00:35,986 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 22:00:35,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 22:00:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 22:00:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 22:00:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-21 22:00:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2022-11-21 22:00:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-21 22:00:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 22:00:36,171 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-21 22:00:36,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 22:00:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 22:00:36,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 22:00:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 22:00:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 22:00:36,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 22:00:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 22:00:36,322 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2022-11-21 22:00:36,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 10:00:36 ImpRootNode [2022-11-21 22:00:36,351 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-21 22:00:36,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 22:00:36,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 22:00:36,353 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 22:00:36,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:00:35" (3/4) ... [2022-11-21 22:00:36,355 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 22:00:36,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/witness.graphml [2022-11-21 22:00:36,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 22:00:36,401 INFO L158 Benchmark]: Toolchain (without parser) took 1959.37ms. Allocated memory is still 182.5MB. Free memory was 145.8MB in the beginning and 81.6MB in the end (delta: 64.2MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-11-21 22:00:36,401 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 22:00:36,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.11ms. Allocated memory is still 182.5MB. Free memory was 145.8MB in the beginning and 145.9MB in the end (delta: -72.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 22:00:36,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.95ms. Allocated memory is still 182.5MB. Free memory was 145.9MB in the beginning and 144.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 22:00:36,403 INFO L158 Benchmark]: Boogie Preprocessor took 51.41ms. Allocated memory is still 182.5MB. Free memory was 144.5MB in the beginning and 143.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 22:00:36,404 INFO L158 Benchmark]: RCFGBuilder took 499.75ms. Allocated memory is still 182.5MB. Free memory was 143.1MB in the beginning and 127.7MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-21 22:00:36,405 INFO L158 Benchmark]: CodeCheck took 969.87ms. Allocated memory is still 182.5MB. Free memory was 127.7MB in the beginning and 83.7MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-21 22:00:36,405 INFO L158 Benchmark]: Witness Printer took 47.81ms. Allocated memory is still 182.5MB. Free memory was 83.7MB in the beginning and 81.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 22:00:36,408 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: 0.9s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 11 mSDtfsCounter, 49 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 127 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, 0.4s 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()={24389:0}] [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()={24389:0}, build_nondet_String()={-1:0}] [L47] CALL cstrncmp(build_nondet_String(),build_nondet_String(),__VERIFIER_nondet_int()) [L28] unsigned char uc1, uc2; VAL [\old(n)=-2147483648, n=-2147483648, s1={24389:0}, s1={24389:0}, s2={-1:0}, s2={-1:0}] [L30] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648, s1={24389:0}, s1={24389:0}, s2={-1:0}, s2={-1:0}] [L33] n-- VAL [\old(n)=-2147483648, n=-2147483648, n--=-2147483648, s1={24389:0}, s1={24389:0}, s2={-1:0}, s2={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.11ms. Allocated memory is still 182.5MB. Free memory was 145.8MB in the beginning and 145.9MB in the end (delta: -72.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.95ms. Allocated memory is still 182.5MB. Free memory was 145.9MB in the beginning and 144.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.41ms. Allocated memory is still 182.5MB. Free memory was 144.5MB in the beginning and 143.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 499.75ms. Allocated memory is still 182.5MB. Free memory was 143.1MB in the beginning and 127.7MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 969.87ms. Allocated memory is still 182.5MB. Free memory was 127.7MB in the beginning and 83.7MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 47.81ms. Allocated memory is still 182.5MB. Free memory was 83.7MB in the beginning and 81.6MB 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! [2022-11-21 22:00:36,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dc1e2c6-1745-4b84-b52a-c3520b2bfc6d/bin/ukojak-jW3SillKbg/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)