./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 30e01a73 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_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/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_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC --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-30e01a7 [2023-11-23 20:05:28,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:05:28,562 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:05:28,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:05:28,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:05:28,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:05:28,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:05:28,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:05:28,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:05:28,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:05:28,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:05:28,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:05:28,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:05:28,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:05:28,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:05:28,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:05:28,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:05:28,615 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:05:28,615 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:05:28,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:05:28,616 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:05:28,617 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:05:28,618 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:05:28,620 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:05:28,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:05:28,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:28,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:05:28,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:05:28,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:05:28,623 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:05:28,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:05:28,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:05:28,624 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_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3c297fe43a7bc8ea537df085d4f69535ba54c0205bfc09097f4c935400e3cd [2023-11-23 20:05:28,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:05:28,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:05:28,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:05:28,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:05:28,961 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:05:28,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i [2023-11-23 20:05:32,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:05:32,575 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:05:32,576 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i [2023-11-23 20:05:32,618 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/data/77b3a235c/3e034f7ffa4c4b6e918d08dac6c44510/FLAG975046c7a [2023-11-23 20:05:32,637 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/data/77b3a235c/3e034f7ffa4c4b6e918d08dac6c44510 [2023-11-23 20:05:32,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:05:32,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:05:32,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:32,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:05:32,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:05:32,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:32" (1/1) ... [2023-11-23 20:05:32,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58990118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:32, skipping insertion in model container [2023-11-23 20:05:32,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:32" (1/1) ... [2023-11-23 20:05:32,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:05:33,119 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:05:33,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:33,681 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:05:33,708 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:05:33,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:34,071 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:34,071 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:34,071 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:34,072 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:34,072 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:34,072 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:34,080 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:05:34,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34 WrapperNode [2023-11-23 20:05:34,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:34,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:34,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:05:34,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:05:34,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,162 INFO L138 Inliner]: procedures = 501, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-23 20:05:34,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:34,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:05:34,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:05:34,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:05:34,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:05:34,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:05:34,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:05:34,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:05:34,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:05:34,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:05:34,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:05:34,279 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:05:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:05:34,280 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:05:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:05:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:05:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:05:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:05:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:05:34,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:05:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:05:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:05:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:05:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:05:34,513 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:05:34,523 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:05:34,725 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:05:34,781 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:05:34,782 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:05:34,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:34 BoogieIcfgContainer [2023-11-23 20:05:34,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:05:34,785 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:05:34,785 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:05:34,796 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:05:34,796 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:34" (1/1) ... [2023-11-23 20:05:34,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:05:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:05:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:05:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:05:34,857 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:35,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:05:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:35,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:05:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:35,266 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:05:35,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:05:35 ImpRootNode [2023-11-23 20:05:35,306 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:05:35,307 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:05:35,307 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:05:35,308 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:05:35,308 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:34" (3/4) ... [2023-11-23 20:05:35,310 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:05:35,311 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:05:35,313 INFO L158 Benchmark]: Toolchain (without parser) took 2666.60ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 108.2MB in the beginning and 107.1MB in the end (delta: 1.1MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2023-11-23 20:05:35,313 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 159.4MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:35,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1433.70ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 108.2MB in the beginning and 147.0MB in the end (delta: -38.7MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2023-11-23 20:05:35,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.53ms. Allocated memory is still 205.5MB. Free memory was 147.0MB in the beginning and 143.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:05:35,315 INFO L158 Benchmark]: Boogie Preprocessor took 32.86ms. Allocated memory is still 205.5MB. Free memory was 143.8MB in the beginning and 142.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:35,316 INFO L158 Benchmark]: RCFGBuilder took 586.94ms. Allocated memory is still 205.5MB. Free memory was 142.8MB in the beginning and 127.0MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:05:35,316 INFO L158 Benchmark]: CodeCheck took 521.91ms. Allocated memory is still 205.5MB. Free memory was 127.0MB in the beginning and 107.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:05:35,317 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 205.5MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:35,320 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)=48, argc=48, argv={47:49}, 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={13510:0}, dataArray={13510:0}, 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={13510:0}, dataArray={13510:0}, 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 0.36ms. Allocated memory is still 159.4MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1433.70ms. Allocated memory was 159.4MB in the beginning and 205.5MB in the end (delta: 46.1MB). Free memory was 108.2MB in the beginning and 147.0MB in the end (delta: -38.7MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.53ms. Allocated memory is still 205.5MB. Free memory was 147.0MB in the beginning and 143.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.86ms. Allocated memory is still 205.5MB. Free memory was 143.8MB in the beginning and 142.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 586.94ms. Allocated memory is still 205.5MB. Free memory was 142.8MB in the beginning and 127.0MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 521.91ms. Allocated memory is still 205.5MB. Free memory was 127.0MB in the beginning and 107.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 205.5MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:05:35,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/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_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC --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-30e01a7 [2023-11-23 20:05:38,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:05:38,324 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:05:38,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:05:38,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:05:38,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:05:38,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:05:38,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:05:38,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:05:38,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:05:38,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:05:38,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:05:38,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:05:38,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:05:38,393 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:05:38,393 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:05:38,394 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:05:38,394 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:05:38,395 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:05:38,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:05:38,396 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:05:38,397 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:05:38,398 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:05:38,398 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:05:38,399 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:05:38,399 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:05:38,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:05:38,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:38,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:05:38,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:05:38,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:05:38,403 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:05:38,404 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:05:38,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:05:38,404 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:05:38,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:05:38,405 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_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3c297fe43a7bc8ea537df085d4f69535ba54c0205bfc09097f4c935400e3cd [2023-11-23 20:05:38,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:05:38,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:05:38,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:05:38,875 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:05:38,876 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:05:38,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i [2023-11-23 20:05:42,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:05:42,523 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:05:42,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_66_bad.i [2023-11-23 20:05:42,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/data/7e9d0bd27/5f15fdba2c2540518bd97f3c29642ed4/FLAG9bb64a6c9 [2023-11-23 20:05:42,580 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/data/7e9d0bd27/5f15fdba2c2540518bd97f3c29642ed4 [2023-11-23 20:05:42,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:05:42,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:05:42,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:42,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:05:42,598 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:05:42,599 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268ef9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42, skipping insertion in model container [2023-11-23 20:05:42,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,691 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:05:43,246 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:05:43,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:43,899 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:05:43,922 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:05:44,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:44,119 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:44,119 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:44,119 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:44,120 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:44,120 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:44,120 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:44,134 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:05:44,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44 WrapperNode [2023-11-23 20:05:44,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:44,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:44,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:05:44,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:05:44,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,228 INFO L138 Inliner]: procedures = 506, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2023-11-23 20:05:44,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:44,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:05:44,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:05:44,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:05:44,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:05:44,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:05:44,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:05:44,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:05:44,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:05:44,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:05:44,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:05:44,387 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:05:44,387 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:05:44,387 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:05:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:05:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:05:44,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:05:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:05:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:05:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 20:05:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:05:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:05:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:05:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:05:44,581 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:05:44,582 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:05:44,747 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:05:44,817 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:05:44,826 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:05:44,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:44 BoogieIcfgContainer [2023-11-23 20:05:44,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:05:44,830 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:05:44,831 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:05:44,842 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:05:44,842 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:44" (1/1) ... [2023-11-23 20:05:44,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:05:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:05:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:05:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:05:44,942 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:44,942 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:05:44,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:05:44,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:05:44,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:05:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:45,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:05:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:45,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:05:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:45,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-23 20:05:45,962 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:05:46,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:05:46 ImpRootNode [2023-11-23 20:05:46,007 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:05:46,010 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:05:46,010 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:05:46,010 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:05:46,011 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:44" (3/4) ... [2023-11-23 20:05:46,013 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:05:46,014 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:05:46,016 INFO L158 Benchmark]: Toolchain (without parser) took 3427.72ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 45.5MB in the beginning and 49.4MB in the end (delta: -4.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-11-23 20:05:46,017 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 56.6MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 65.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:05:46,018 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1548.51ms. Allocated memory is still 73.4MB. Free memory was 45.3MB in the beginning and 33.8MB in the end (delta: 11.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2023-11-23 20:05:46,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.95ms. Allocated memory is still 73.4MB. Free memory was 33.8MB in the beginning and 30.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:05:46,020 INFO L158 Benchmark]: Boogie Preprocessor took 65.52ms. Allocated memory is still 73.4MB. Free memory was 30.6MB in the beginning and 28.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:05:46,021 INFO L158 Benchmark]: RCFGBuilder took 533.19ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 28.4MB in the beginning and 44.2MB in the end (delta: -15.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2023-11-23 20:05:46,021 INFO L158 Benchmark]: CodeCheck took 1177.19ms. Allocated memory is still 88.1MB. Free memory was 43.7MB in the beginning and 49.9MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:46,022 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 88.1MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:46,036 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}, 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 0.61ms. Allocated memory is still 56.6MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 65.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1548.51ms. Allocated memory is still 73.4MB. Free memory was 45.3MB in the beginning and 33.8MB in the end (delta: 11.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.95ms. Allocated memory is still 73.4MB. Free memory was 33.8MB in the beginning and 30.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.52ms. Allocated memory is still 73.4MB. Free memory was 30.6MB in the beginning and 28.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.19ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 28.4MB in the beginning and 44.2MB in the end (delta: -15.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * CodeCheck took 1177.19ms. Allocated memory is still 88.1MB. Free memory was 43.7MB in the beginning and 49.9MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 88.1MB. Free memory is still 49.4MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:05:46,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d563e04b-f46d-4753-bd12-66008ef1f55f/bin/ukojak-verify-1t5iHCbJaC/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