./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 6b4ec56b 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_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ --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-6b4ec56 [2022-11-20 18:01:05,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:01:05,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:01:05,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:01:05,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:01:05,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:01:05,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:01:05,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:01:05,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:01:05,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:01:05,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:01:05,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:01:05,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:01:05,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:01:05,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:01:05,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:01:05,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:01:05,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:01:05,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:01:05,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:01:05,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:01:05,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:01:05,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:01:05,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:01:05,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:01:05,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:01:05,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:01:05,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:01:05,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:01:05,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:01:05,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:01:05,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:01:05,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:01:05,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:01:05,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:01:05,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:01:05,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:01:05,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:01:05,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:01:05,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:01:05,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:01:05,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf [2022-11-20 18:01:05,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:01:05,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:01:05,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:01:05,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-20 18:01:06,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 18:01:06,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 18:01:06,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:01:06,001 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 18:01:06,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:01:06,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:01:06,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:01:06,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:01:06,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:01:06,003 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 18:01:06,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:01:06,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:01:06,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:01:06,004 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 18:01:06,004 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 18:01:06,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:01:06,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 18:01:06,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:01:06,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:01:06,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:01:06,005 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 18:01:06,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:01:06,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:01:06,005 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_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87534de3d459ca9409f2dccef0ebbf0eeafdc010d6ce5fc12d39e28438c1bbdf [2022-11-20 18:01:06,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:01:06,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:01:06,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:01:06,377 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:01:06,378 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:01:06,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2022-11-20 18:01:09,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:01:09,802 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:01:09,803 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2022-11-20 18:01:09,809 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/data/a88c69046/d5ede20d677943d4a9199068048d86b7/FLAG56a846d42 [2022-11-20 18:01:09,822 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/data/a88c69046/d5ede20d677943d4a9199068048d86b7 [2022-11-20 18:01:09,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:01:09,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:01:09,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:01:09,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:01:09,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:01:09,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:01:09" (1/1) ... [2022-11-20 18:01:09,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7b37e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:09, skipping insertion in model container [2022-11-20 18:01:09,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:01:09" (1/1) ... [2022-11-20 18:01:09,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:01:09,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:01:10,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:01:10,065 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:01:10,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:01:10,096 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:01:10,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10 WrapperNode [2022-11-20 18:01:10,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:01:10,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:01:10,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:01:10,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:01:10,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,133 INFO L138 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-20 18:01:10,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:01:10,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:01:10,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:01:10,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:01:10,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:01:10,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:01:10,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:01:10,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:01:10,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 18:01:10,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 18:01:10,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 18:01:10,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 18:01:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 18:01:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2022-11-20 18:01:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2022-11-20 18:01:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 18:01:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:01:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:01:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 18:01:10,353 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:01:10,356 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:01:10,522 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:01:10,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:01:10,592 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 18:01:10,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:01:10 BoogieIcfgContainer [2022-11-20 18:01:10,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:01:10,596 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 18:01:10,596 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 18:01:10,607 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 18:01:10,608 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:01:10" (1/1) ... [2022-11-20 18:01:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:01:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:01:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2022-11-20 18:01:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-20 18:01:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 18:01:10,677 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:01:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:01:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:01:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:01:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:01:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 20 states and 24 transitions. [2022-11-20 18:01:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-20 18:01:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 18:01:11,046 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:01:11,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:01:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:01:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:01:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:01:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 19 states and 23 transitions. [2022-11-20 18:01:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-20 18:01:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 18:01:11,206 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:01:11,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:01:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:01:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 18:01:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:01:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2022-11-20 18:01:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-20 18:01:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 18:01:11,475 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:01:11,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:01:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 18:01:11,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 18:01:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 18:01:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 18:01:11,586 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 18:01:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 18:01:11,626 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2022-11-20 18:01:11,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 06:01:11 ImpRootNode [2022-11-20 18:01:11,657 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 18:01:11,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 18:01:11,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 18:01:11,658 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 18:01:11,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:01:10" (3/4) ... [2022-11-20 18:01:11,661 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 18:01:11,705 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 18:01:11,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 18:01:11,706 INFO L158 Benchmark]: Toolchain (without parser) took 1879.62ms. Allocated memory is still 169.9MB. Free memory was 140.4MB in the beginning and 70.2MB in the end (delta: 70.2MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2022-11-20 18:01:11,707 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 130.0MB. Free memory was 96.8MB in the beginning and 96.7MB in the end (delta: 73.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:01:11,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.03ms. Allocated memory is still 169.9MB. Free memory was 140.4MB in the beginning and 133.1MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 18:01:11,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.09ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 132.2MB in the end (delta: 882.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:01:11,709 INFO L158 Benchmark]: Boogie Preprocessor took 26.37ms. Allocated memory is still 169.9MB. Free memory was 132.2MB in the beginning and 130.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 18:01:11,710 INFO L158 Benchmark]: RCFGBuilder took 433.81ms. Allocated memory is still 169.9MB. Free memory was 130.2MB in the beginning and 115.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 18:01:11,711 INFO L158 Benchmark]: CodeCheck took 1061.34ms. Allocated memory is still 169.9MB. Free memory was 115.5MB in the beginning and 72.3MB in the end (delta: 43.2MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-20 18:01:11,712 INFO L158 Benchmark]: Witness Printer took 47.55ms. Allocated memory is still 169.9MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 18:01:11,716 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: 1.0s, 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, 0.2s 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, 0.5s 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()={-1:0}, build_nondet_String()={24389:0}] [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 0.57ms. Allocated memory is still 130.0MB. Free memory was 96.8MB in the beginning and 96.7MB in the end (delta: 73.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.03ms. Allocated memory is still 169.9MB. Free memory was 140.4MB in the beginning and 133.1MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.09ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 132.2MB in the end (delta: 882.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.37ms. Allocated memory is still 169.9MB. Free memory was 132.2MB in the beginning and 130.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 433.81ms. Allocated memory is still 169.9MB. Free memory was 130.2MB in the beginning and 115.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 1061.34ms. Allocated memory is still 169.9MB. Free memory was 115.5MB in the beginning and 72.3MB in the end (delta: 43.2MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 47.55ms. Allocated memory is still 169.9MB. Free memory was 72.3MB in the beginning and 70.2MB 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! [2022-11-20 18:01:11,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cbb8d7f-3911-4ecb-a338-3fc742596c7e/bin/ukojak-pZX7IvK2PQ/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)