./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 07:33:50,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 07:33:50,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 07:33:51,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 07:33:51,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 07:33:51,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 07:33:51,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 07:33:51,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 07:33:51,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 07:33:51,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 07:33:51,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 07:33:51,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 07:33:51,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 07:33:51,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 07:33:51,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 07:33:51,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 07:33:51,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 07:33:51,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 07:33:51,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 07:33:51,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 07:33:51,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 07:33:51,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 07:33:51,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 07:33:51,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 07:33:51,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 07:33:51,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 07:33:51,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 07:33:51,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 07:33:51,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 07:33:51,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 07:33:51,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 07:33:51,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 07:33:51,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 07:33:51,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 07:33:51,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 07:33:51,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 07:33:51,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 07:33:51,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 07:33:51,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 07:33:51,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 07:33:51,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 07:33:51,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2021-11-25 07:33:51,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 07:33:51,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 07:33:51,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 07:33:51,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-25 07:33:51,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 07:33:51,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 07:33:51,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 07:33:51,166 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 07:33:51,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 07:33:51,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 07:33:51,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 07:33:51,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 07:33:51,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 07:33:51,168 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 07:33:51,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 07:33:51,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 07:33:51,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 07:33:51,169 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-25 07:33:51,169 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-25 07:33:51,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 07:33:51,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 07:33:51,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 07:33:51,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 07:33:51,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 07:33:51,171 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-25 07:33:51,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 07:33:51,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 07:33:51,171 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_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87534de3d459ca9409f2dccef0ebbf0eeafdc010d6ce5fc12d39e28438c1bbdf [2021-11-25 07:33:51,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 07:33:51,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 07:33:51,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 07:33:51,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 07:33:51,546 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 07:33:51,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-11-25 07:33:51,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/data/a15da23b2/39d579f4d32d4b288bb2fbf6fc815aa8/FLAGfcbb60667 [2021-11-25 07:33:52,181 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 07:33:52,182 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2021-11-25 07:33:52,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/data/a15da23b2/39d579f4d32d4b288bb2fbf6fc815aa8/FLAGfcbb60667 [2021-11-25 07:33:52,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/data/a15da23b2/39d579f4d32d4b288bb2fbf6fc815aa8 [2021-11-25 07:33:52,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 07:33:52,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 07:33:52,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 07:33:52,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 07:33:52,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 07:33:52,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e2c0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52, skipping insertion in model container [2021-11-25 07:33:52,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 07:33:52,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 07:33:52,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 07:33:52,795 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 07:33:52,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 07:33:52,842 INFO L208 MainTranslator]: Completed translation [2021-11-25 07:33:52,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52 WrapperNode [2021-11-25 07:33:52,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 07:33:52,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 07:33:52,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 07:33:52,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 07:33:52,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,880 INFO L137 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-25 07:33:52,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 07:33:52,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 07:33:52,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 07:33:52,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 07:33:52,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 07:33:52,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 07:33:52,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 07:33:52,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 07:33:52,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:52" (1/1) ... [2021-11-25 07:33:52,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 07:33:52,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/z3 [2021-11-25 07:33:52,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-25 07:33:52,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-25 07:33:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 07:33:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2021-11-25 07:33:52,999 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2021-11-25 07:33:52,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 07:33:53,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 07:33:53,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 07:33:53,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 07:33:53,106 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 07:33:53,108 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 07:33:53,348 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 07:33:53,422 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 07:33:53,422 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 07:33:53,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:33:53 BoogieIcfgContainer [2021-11-25 07:33:53,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 07:33:53,426 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-25 07:33:53,426 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-25 07:33:53,438 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-25 07:33:53,438 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:33:53" (1/1) ... [2021-11-25 07:33:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 07:33:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:33:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2021-11-25 07:33:53,560 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-25 07:33:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 07:33:53,562 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:33:53,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:33:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:33:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:33:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:33:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 20 states and 24 transitions. [2021-11-25 07:33:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-25 07:33:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 07:33:53,821 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:33:53,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:33:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:33:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:33:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:33:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 19 states and 23 transitions. [2021-11-25 07:33:53,941 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-25 07:33:53,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 07:33:53,945 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:33:53,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:33:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:33:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 07:33:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:33:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2021-11-25 07:33:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-25 07:33:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 07:33:54,168 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:33:54,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:33:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:33:54,213 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 07:33:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:33:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:33:54,299 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 07:33:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:33:54,330 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2021-11-25 07:33:54,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 07:33:54 ImpRootNode [2021-11-25 07:33:54,376 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-25 07:33:54,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 07:33:54,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 07:33:54,380 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 07:33:54,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:33:53" (3/4) ... [2021-11-25 07:33:54,382 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 07:33:54,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/witness.graphml [2021-11-25 07:33:54,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 07:33:54,450 INFO L158 Benchmark]: Toolchain (without parser) took 1912.52ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 49.9MB in the beginning and 60.9MB in the end (delta: -11.0MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-11-25 07:33:54,450 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 90.2MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 07:33:54,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.00ms. Allocated memory is still 90.2MB. Free memory was 49.7MB in the beginning and 66.2MB in the end (delta: -16.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-25 07:33:54,452 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.13ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 64.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 07:33:54,452 INFO L158 Benchmark]: Boogie Preprocessor took 25.68ms. Allocated memory is still 90.2MB. Free memory was 64.6MB in the beginning and 63.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 07:33:54,455 INFO L158 Benchmark]: RCFGBuilder took 517.66ms. Allocated memory is still 90.2MB. Free memory was 63.3MB in the beginning and 50.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 07:33:54,456 INFO L158 Benchmark]: CodeCheck took 949.92ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 50.4MB in the beginning and 63.0MB in the end (delta: -12.5MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-25 07:33:54,456 INFO L158 Benchmark]: Witness Printer took 72.48ms. Allocated memory is still 111.1MB. Free memory was 63.0MB in the beginning and 60.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 07:33:54,464 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, PartialOrderReductionTime: 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, 0.2s 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()={-2:0}] [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()={-2:0}, 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={-2:0}, s1={-2:0}, s2={-1:0}, s2={-1:0}] [L30] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648, s1={-2:0}, s1={-2:0}, s2={-1:0}, s2={-1:0}] [L33] n-- VAL [\old(n)=-2147483648, n=-2147483648, n--=-2147483648, s1={-2:0}, s1={-2:0}, s2={-1:0}, s2={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 90.2MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.00ms. Allocated memory is still 90.2MB. Free memory was 49.7MB in the beginning and 66.2MB in the end (delta: -16.5MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.13ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 64.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.68ms. Allocated memory is still 90.2MB. Free memory was 64.6MB in the beginning and 63.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 517.66ms. Allocated memory is still 90.2MB. Free memory was 63.3MB in the beginning and 50.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 949.92ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 50.4MB in the beginning and 63.0MB in the end (delta: -12.5MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Witness Printer took 72.48ms. Allocated memory is still 111.1MB. Free memory was 63.0MB in the beginning and 60.9MB 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! [2021-11-25 07:33:54,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7508c0e-abaf-4d45-8ef5-b002b2ede6b2/bin/ukojak-d1pc8ZmBRL/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)