./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --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 be3c297fe43a7bc8ea537df085d4f69535ba54c0205bfc09097f4c935400e3cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:44:20,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:44:21,085 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 02:44:21,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:44:21,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:44:21,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:44:21,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:44:21,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:44:21,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:44:21,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:44:21,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:44:21,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:44:21,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:44:21,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:44:21,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:44:21,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:44:21,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:44:21,153 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 02:44:21,153 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:44:21,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:44:21,154 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:44:21,155 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:44:21,155 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:44:21,156 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:44:21,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:44:21,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:44:21,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:44:21,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:44:21,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:44:21,159 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:44:21,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:44:21,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:44:21,160 INFO L153 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_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3c297fe43a7bc8ea537df085d4f69535ba54c0205bfc09097f4c935400e3cd [2023-11-19 02:44:21,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:44:21,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:44:21,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:44:21,494 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:44:21,495 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:44:21,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i [2023-11-19 02:44:24,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:44:24,953 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:44:24,954 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i [2023-11-19 02:44:24,980 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/data/854a00d94/5b63c2192b7f468da751d50f311692ad/FLAG676ab62a2 [2023-11-19 02:44:25,004 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/data/854a00d94/5b63c2192b7f468da751d50f311692ad [2023-11-19 02:44:25,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:44:25,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:44:25,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:44:25,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:44:25,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:44:25,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:25" (1/1) ... [2023-11-19 02:44:25,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305114f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:25, skipping insertion in model container [2023-11-19 02:44:25,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:25" (1/1) ... [2023-11-19 02:44:25,123 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:44:25,500 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:44:26,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:44:26,127 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:44:26,155 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:44:26,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:44:26,554 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:26,554 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:26,555 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:26,555 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:26,555 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:26,555 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:26,564 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:44:26,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26 WrapperNode [2023-11-19 02:44:26,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:44:26,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:44:26,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:44:26,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:44:26,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,652 INFO L138 Inliner]: procedures = 501, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-11-19 02:44:26,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:44:26,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:44:26,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:44:26,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:44:26,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,670 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:44:26,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:44:26,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:44:26,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:44:26,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26" (1/1) ... [2023-11-19 02:44:26,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:44:26,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:44:26,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:44:26,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:44:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 02:44:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 02:44:26,781 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 02:44:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:44:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 02:44:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 02:44:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:44:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:44:26,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:44:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 02:44:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 02:44:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 02:44:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 02:44:26,961 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:44:26,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:44:27,118 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:44:27,160 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:44:27,160 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 02:44:27,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:27 BoogieIcfgContainer [2023-11-19 02:44:27,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:44:27,174 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:44:27,174 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:44:27,190 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:44:27,190 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:27" (1/1) ... [2023-11-19 02:44:27,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:44:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:44:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-19 02:44:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-19 02:44:27,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 02:44:27,280 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:44:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:44:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:44:27,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:44:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:44:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:44:27,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:44:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:44:27,766 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 02:44:27,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:44:27 ImpRootNode [2023-11-19 02:44:27,822 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:44:27,827 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:44:27,827 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:44:27,827 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:44:27,828 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:27" (3/4) ... [2023-11-19 02:44:27,833 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 02:44:27,834 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:44:27,836 INFO L158 Benchmark]: Toolchain (without parser) took 2823.50ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 117.9MB in the beginning and 144.0MB in the end (delta: -26.2MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. [2023-11-19 02:44:27,837 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 167.8MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:44:27,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1549.70ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 117.3MB in the beginning and 187.0MB in the end (delta: -69.7MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2023-11-19 02:44:27,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.44ms. Allocated memory is still 237.0MB. Free memory was 187.0MB in the beginning and 183.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:44:27,840 INFO L158 Benchmark]: Boogie Preprocessor took 35.35ms. Allocated memory is still 237.0MB. Free memory was 183.9MB in the beginning and 182.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:44:27,841 INFO L158 Benchmark]: RCFGBuilder took 482.18ms. Allocated memory is still 237.0MB. Free memory was 181.8MB in the beginning and 166.0MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 02:44:27,842 INFO L158 Benchmark]: CodeCheck took 648.86ms. Allocated memory is still 237.0MB. Free memory was 166.0MB in the beginning and 145.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 02:44:27,843 INFO L158 Benchmark]: Witness Printer took 7.57ms. Allocated memory is still 237.0MB. Free memory was 145.1MB in the beginning and 144.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:44:27,856 INFO L338 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - UnprovableResult [Line: 1581]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1571] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=49, argc=49, argv={12:50}, argv={12:50}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_multiply_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_multiply_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1579] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, dataArray={13508:0}, dataArray={13508:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, dataArray={13508:0}, dataArray={13508:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 167.8MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1549.70ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 117.3MB in the beginning and 187.0MB in the end (delta: -69.7MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.44ms. Allocated memory is still 237.0MB. Free memory was 187.0MB in the beginning and 183.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.35ms. Allocated memory is still 237.0MB. Free memory was 183.9MB in the beginning and 182.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.18ms. Allocated memory is still 237.0MB. Free memory was 181.8MB in the beginning and 166.0MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 648.86ms. Allocated memory is still 237.0MB. Free memory was 166.0MB in the beginning and 145.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 7.57ms. Allocated memory is still 237.0MB. Free memory was 145.1MB in the beginning and 144.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 02:44:27,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --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 be3c297fe43a7bc8ea537df085d4f69535ba54c0205bfc09097f4c935400e3cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:44:30,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:44:30,756 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 02:44:30,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:44:30,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:44:30,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:44:30,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:44:30,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:44:30,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:44:30,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:44:30,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:44:30,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:44:30,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:44:30,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:44:30,819 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 02:44:30,820 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 02:44:30,820 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 02:44:30,821 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 02:44:30,821 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:44:30,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:44:30,822 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:44:30,823 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:44:30,823 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:44:30,824 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:44:30,824 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 02:44:30,824 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 02:44:30,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:44:30,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:44:30,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:44:30,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:44:30,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:44:30,827 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 02:44:30,828 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 02:44:30,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:44:30,828 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 02:44:30,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 02:44:30,829 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3c297fe43a7bc8ea537df085d4f69535ba54c0205bfc09097f4c935400e3cd [2023-11-19 02:44:31,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:44:31,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:44:31,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:44:31,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:44:31,243 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:44:31,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i [2023-11-19 02:44:34,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:44:35,009 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:44:35,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i [2023-11-19 02:44:35,041 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/data/7d642134a/b7c62e36c3af4ce7bac0ba92694589a0/FLAG6b1ca1ea5 [2023-11-19 02:44:35,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/data/7d642134a/b7c62e36c3af4ce7bac0ba92694589a0 [2023-11-19 02:44:35,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:44:35,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:44:35,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:44:35,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:44:35,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:44:35,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:35" (1/1) ... [2023-11-19 02:44:35,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c76355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:35, skipping insertion in model container [2023-11-19 02:44:35,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:35" (1/1) ... [2023-11-19 02:44:35,178 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:44:35,683 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:44:36,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:44:36,396 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:44:36,429 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:44:36,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:44:36,716 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:36,717 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:36,728 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:36,729 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:36,729 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:36,729 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:44:36,737 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:44:36,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36 WrapperNode [2023-11-19 02:44:36,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:44:36,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:44:36,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:44:36,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:44:36,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,832 INFO L138 Inliner]: procedures = 506, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-19 02:44:36,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:44:36,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:44:36,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:44:36,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:44:36,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:44:36,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:44:36,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:44:36,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:44:36,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:36" (1/1) ... [2023-11-19 02:44:36,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:44:36,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:44:36,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:44:36,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:44:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 02:44:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 02:44:36,979 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 02:44:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:44:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 02:44:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:44:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:44:36,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:44:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 02:44:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 02:44:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 02:44:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 02:44:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 02:44:37,219 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:44:37,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:44:37,483 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:44:37,557 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:44:37,557 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 02:44:37,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:37 BoogieIcfgContainer [2023-11-19 02:44:37,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:44:37,565 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:44:37,566 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:44:37,577 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:44:37,578 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:37" (1/1) ... [2023-11-19 02:44:37,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:44:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:44:37,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-19 02:44:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-19 02:44:37,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 02:44:37,687 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:44:37,688 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:44:37,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:44:37,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:44:37,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 02:44:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:44:38,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:44:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:44:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:44:38,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:44:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:44:38,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-19 02:44:38,714 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 02:44:38,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:44:38 ImpRootNode [2023-11-19 02:44:38,770 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:44:38,772 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:44:38,773 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:44:38,773 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:44:38,774 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:37" (3/4) ... [2023-11-19 02:44:38,776 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 02:44:38,778 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:44:38,779 INFO L158 Benchmark]: Toolchain (without parser) took 3715.19ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 45.7MB in the beginning and 74.3MB in the end (delta: -28.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2023-11-19 02:44:38,780 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 77.6MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:44:38,782 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1669.02ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 45.4MB in the beginning and 84.7MB in the end (delta: -39.3MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2023-11-19 02:44:38,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.68ms. Allocated memory is still 113.2MB. Free memory was 84.7MB in the beginning and 81.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:44:38,784 INFO L158 Benchmark]: Boogie Preprocessor took 59.98ms. Allocated memory is still 113.2MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:44:38,785 INFO L158 Benchmark]: RCFGBuilder took 669.81ms. Allocated memory is still 113.2MB. Free memory was 79.3MB in the beginning and 61.0MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 02:44:38,786 INFO L158 Benchmark]: CodeCheck took 1205.00ms. Allocated memory is still 113.2MB. Free memory was 61.0MB in the beginning and 74.3MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:44:38,787 INFO L158 Benchmark]: Witness Printer took 5.41ms. Allocated memory is still 113.2MB. Free memory was 74.3MB in the beginning and 74.3MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:44:38,800 INFO L338 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - UnprovableResult [Line: 1581]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1571] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_multiply_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_multiply_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1579] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataArray={6:0}, dataArray={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataArray={6:0}, dataArray={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 77.6MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1669.02ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 45.4MB in the beginning and 84.7MB in the end (delta: -39.3MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.68ms. Allocated memory is still 113.2MB. Free memory was 84.7MB in the beginning and 81.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.98ms. Allocated memory is still 113.2MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 669.81ms. Allocated memory is still 113.2MB. Free memory was 79.3MB in the beginning and 61.0MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 1205.00ms. Allocated memory is still 113.2MB. Free memory was 61.0MB in the beginning and 74.3MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.41ms. Allocated memory is still 113.2MB. Free memory was 74.3MB in the beginning and 74.3MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 02:44:38,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b371e0-b83c-4d0e-9357-2c44ddd50e3d/bin/ukojak-verify-G8NBE6pJGL/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 Result: UNKNOWN: Overapproximated counterexample