./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2 --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 23cf0ffb9f962a6694e05d9cf94d91f079ea00e3188ad6187a3f8468cfb1f91c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:35:04,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:35:04,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:35:04,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:35:04,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:35:04,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:35:04,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:35:04,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:35:04,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:35:04,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:35:04,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:35:04,272 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:35:04,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:35:04,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:35:04,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:35:04,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:35:04,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:35:04,276 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:35:04,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:35:04,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:35:04,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:35:04,279 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:35:04,279 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:35:04,281 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:35:04,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:35:04,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:35:04,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:35:04,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:35:04,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:35:04,284 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:35:04,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:35:04,286 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:35:04,286 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_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23cf0ffb9f962a6694e05d9cf94d91f079ea00e3188ad6187a3f8468cfb1f91c [2023-11-21 18:35:04,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:35:04,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:35:04,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:35:04,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:35:04,629 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:35:04,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i [2023-11-21 18:35:07,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:35:08,176 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:35:08,179 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i [2023-11-21 18:35:08,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/data/883dffd6d/36b870a32932444b80b7314d577d3614/FLAGf0a2f4f2d [2023-11-21 18:35:08,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/data/883dffd6d/36b870a32932444b80b7314d577d3614 [2023-11-21 18:35:08,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:35:08,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:35:08,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:35:08,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:35:08,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:35:08,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:35:08" (1/1) ... [2023-11-21 18:35:08,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bd6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:08, skipping insertion in model container [2023-11-21 18:35:08,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:35:08" (1/1) ... [2023-11-21 18:35:08,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:35:08,747 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:35:09,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:35:09,303 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:35:09,326 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:35:09,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:35:09,590 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:09,590 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:09,590 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:09,590 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:09,591 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:09,591 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:09,599 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:35:09,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09 WrapperNode [2023-11-21 18:35:09,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:35:09,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:35:09,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:35:09,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:35:09,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,691 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-11-21 18:35:09,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:35:09,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:35:09,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:35:09,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:35:09,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:35:09,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:35:09,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:35:09,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:35:09,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:09" (1/1) ... [2023-11-21 18:35:09,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:35:09,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:35:09,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:35:09,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:35:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:35:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:35:09,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:35:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:35:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:35:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:35:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:35:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:35:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:35:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:35:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:35:10,004 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:35:10,006 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:35:10,132 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:35:10,174 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:35:10,174 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:35:10,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:35:10 BoogieIcfgContainer [2023-11-21 18:35:10,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:35:10,177 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:35:10,177 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:35:10,188 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:35:10,188 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:35:10" (1/1) ... [2023-11-21 18:35:10,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:35:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:35:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-21 18:35:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-21 18:35:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:35:10,263 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:35:10,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:35:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:35:10,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:35:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:35:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:35:10,572 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:35:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:35:10,618 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:35:10,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:35:10 ImpRootNode [2023-11-21 18:35:10,662 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:35:10,663 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:35:10,663 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:35:10,663 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:35:10,664 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:35:10" (3/4) ... [2023-11-21 18:35:10,666 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:35:10,667 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:35:10,668 INFO L158 Benchmark]: Toolchain (without parser) took 2423.72ms. Allocated memory is still 167.8MB. Free memory was 119.9MB in the beginning and 62.1MB in the end (delta: 57.8MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. [2023-11-21 18:35:10,669 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 60.6MB in the beginning and 60.5MB in the end (delta: 98.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:35:10,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1352.47ms. Allocated memory is still 167.8MB. Free memory was 119.4MB in the beginning and 99.9MB in the end (delta: 19.6MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2023-11-21 18:35:10,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.51ms. Allocated memory is still 167.8MB. Free memory was 99.6MB in the beginning and 96.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:35:10,671 INFO L158 Benchmark]: Boogie Preprocessor took 65.76ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:35:10,672 INFO L158 Benchmark]: RCFGBuilder took 417.58ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 79.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 18:35:10,672 INFO L158 Benchmark]: CodeCheck took 485.34ms. Allocated memory is still 167.8MB. Free memory was 79.8MB in the beginning and 62.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:35:10,673 INFO L158 Benchmark]: Witness Printer took 4.48ms. Allocated memory is still 167.8MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:35:10,677 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: 0.4s, 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, 0.0s 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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); [L1576] 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) [L1576] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:28}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] EXPR data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552-L1562] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, data=-1073741825, dataCopy=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, data=-1073741825, dataCopy=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1568] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, data=-1073741825, dataCopy=-1073741825, 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 0.35ms. Allocated memory is still 113.2MB. Free memory was 60.6MB in the beginning and 60.5MB in the end (delta: 98.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1352.47ms. Allocated memory is still 167.8MB. Free memory was 119.4MB in the beginning and 99.9MB in the end (delta: 19.6MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.51ms. Allocated memory is still 167.8MB. Free memory was 99.6MB in the beginning and 96.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.76ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.58ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 79.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 485.34ms. Allocated memory is still 167.8MB. Free memory was 79.8MB in the beginning and 62.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.48ms. Allocated memory is still 167.8MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:35:10,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with 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_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2 --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 23cf0ffb9f962a6694e05d9cf94d91f079ea00e3188ad6187a3f8468cfb1f91c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:35:13,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:35:13,609 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:35:13,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:35:13,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:35:13,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:35:13,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:35:13,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:35:13,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:35:13,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:35:13,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:35:13,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:35:13,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:35:13,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:35:13,677 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:35:13,677 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:35:13,678 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:35:13,678 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:35:13,679 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:35:13,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:35:13,680 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:35:13,681 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:35:13,682 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:35:13,682 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:35:13,683 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:35:13,683 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:35:13,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:35:13,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:35:13,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:35:13,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:35:13,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:35:13,687 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:35:13,687 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:35:13,688 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:35:13,688 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:35:13,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:35:13,689 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_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23cf0ffb9f962a6694e05d9cf94d91f079ea00e3188ad6187a3f8468cfb1f91c [2023-11-21 18:35:14,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:35:14,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:35:14,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:35:14,151 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:35:14,152 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:35:14,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i [2023-11-21 18:35:17,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:35:17,850 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:35:17,850 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i [2023-11-21 18:35:17,886 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/data/2990d0644/6e7bb2842de54231952d936735b49ccf/FLAGdc74d1711 [2023-11-21 18:35:17,907 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/data/2990d0644/6e7bb2842de54231952d936735b49ccf [2023-11-21 18:35:17,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:35:17,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:35:17,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:35:17,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:35:17,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:35:17,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:35:17" (1/1) ... [2023-11-21 18:35:17,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626e2c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:17, skipping insertion in model container [2023-11-21 18:35:17,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:35:17" (1/1) ... [2023-11-21 18:35:18,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:35:18,473 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:35:19,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:35:19,176 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:35:19,214 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:35:19,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:35:19,543 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:19,543 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:19,544 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:19,544 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:19,544 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:19,544 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:35:19,552 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:35:19,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19 WrapperNode [2023-11-21 18:35:19,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:35:19,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:35:19,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:35:19,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:35:19,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,631 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-11-21 18:35:19,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:35:19,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:35:19,633 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:35:19,633 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:35:19,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,658 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:35:19,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:35:19,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:35:19,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:35:19,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:35:19" (1/1) ... [2023-11-21 18:35:19,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:35:19,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:35:19,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:35:19,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:35:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:35:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:35:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:35:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:35:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:35:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:35:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:35:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:35:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:35:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:35:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:35:19,956 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:35:19,960 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:35:20,190 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:35:20,258 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:35:20,258 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:35:20,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:35:20 BoogieIcfgContainer [2023-11-21 18:35:20,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:35:20,262 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:35:20,262 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:35:20,272 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:35:20,273 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:35:20" (1/1) ... [2023-11-21 18:35:20,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:35:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:35:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-21 18:35:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-21 18:35:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:35:20,397 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:35:20,398 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:35:20,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:35:20,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:35:20,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:35:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:35:20,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:35:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:35:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:35:20,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:35:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:35:20,923 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-21 18:35:20,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:35:20,930 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:35:20,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:35:20 ImpRootNode [2023-11-21 18:35:20,971 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:35:20,973 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:35:20,974 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:35:20,974 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:35:20,974 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:35:20" (3/4) ... [2023-11-21 18:35:20,976 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:35:20,977 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:35:20,978 INFO L158 Benchmark]: Toolchain (without parser) took 3063.90ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 59.4MB in the end (delta: 15.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-11-21 18:35:20,979 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 69.2MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:35:20,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1635.74ms. Allocated memory is still 102.8MB. Free memory was 75.0MB in the beginning and 67.3MB in the end (delta: 7.7MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2023-11-21 18:35:20,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.01ms. Allocated memory is still 102.8MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:35:20,982 INFO L158 Benchmark]: Boogie Preprocessor took 38.44ms. Allocated memory is still 102.8MB. Free memory was 64.2MB in the beginning and 62.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:35:20,983 INFO L158 Benchmark]: RCFGBuilder took 589.47ms. Allocated memory is still 102.8MB. Free memory was 62.0MB in the beginning and 44.7MB in the end (delta: 17.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 18:35:20,983 INFO L158 Benchmark]: CodeCheck took 709.93ms. Allocated memory is still 102.8MB. Free memory was 44.7MB in the beginning and 59.4MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:35:20,984 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 102.8MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:35:20,993 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: 0.6s, 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, 0.0s 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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); [L1576] 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) [L1576] 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] [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] EXPR data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552-L1562] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, dataCopy=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, dataCopy=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1568] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, dataCopy=-2147483648, 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 0.65ms. Allocated memory is still 69.2MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1635.74ms. Allocated memory is still 102.8MB. Free memory was 75.0MB in the beginning and 67.3MB in the end (delta: 7.7MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.01ms. Allocated memory is still 102.8MB. Free memory was 67.3MB in the beginning and 64.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.44ms. Allocated memory is still 102.8MB. Free memory was 64.2MB in the beginning and 62.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 589.47ms. Allocated memory is still 102.8MB. Free memory was 62.0MB in the beginning and 44.7MB in the end (delta: 17.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * CodeCheck took 709.93ms. Allocated memory is still 102.8MB. Free memory was 44.7MB in the beginning and 59.4MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 102.8MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:35:21,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28fd7987-edd5-4427-b082-c7a0fca9206c/bin/ukojak-verify-i0I2FZA1j2/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