./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_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_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/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_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/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_273f7a49-0429-4e32-9e55-ccad698dac99/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 cc97983eee1bae1752601b2134a45f91e3415daed6bc26982b68c30eb488fa92 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:40:33,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:40:33,194 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:40:33,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:40:33,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:40:33,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:40:33,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:40:33,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:40:33,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:40:33,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:40:33,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:40:33,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:40:33,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:40:33,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:40:33,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:40:33,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:40:33,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:40:33,263 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:40:33,263 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:40:33,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:40:33,264 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:40:33,265 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:40:33,266 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:40:33,266 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:40:33,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:40:33,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:40:33,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:40:33,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:40:33,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:40:33,269 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:40:33,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:40:33,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:40:33,270 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_273f7a49-0429-4e32-9e55-ccad698dac99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc97983eee1bae1752601b2134a45f91e3415daed6bc26982b68c30eb488fa92 [2023-11-21 18:40:33,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:40:33,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:40:33,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:40:33,562 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:40:33,562 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:40:33,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i [2023-11-21 18:40:36,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:40:37,195 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:40:37,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i [2023-11-21 18:40:37,238 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/data/024ec78db/18fd06e41a9349fa9ef82351e0017fc9/FLAGe42d0e0d8 [2023-11-21 18:40:37,259 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/data/024ec78db/18fd06e41a9349fa9ef82351e0017fc9 [2023-11-21 18:40:37,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:40:37,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:40:37,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:40:37,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:40:37,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:40:37,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:40:37" (1/1) ... [2023-11-21 18:40:37,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca0eb31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:37, skipping insertion in model container [2023-11-21 18:40:37,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:40:37" (1/1) ... [2023-11-21 18:40:37,353 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:40:37,846 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:40:38,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:40:38,416 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:40:38,440 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:40:38,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:40:38,698 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:38,698 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:38,699 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:38,699 WARN L675 CHandler]: The function funcPtr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:38,699 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:38,699 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:38,699 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:38,707 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:40:38,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38 WrapperNode [2023-11-21 18:40:38,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:40:38,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:40:38,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:40:38,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:40:38,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,774 INFO L138 Inliner]: procedures = 502, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 60 [2023-11-21 18:40:38,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:40:38,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:40:38,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:40:38,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:40:38,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:40:38,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:40:38,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:40:38,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:40:38,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:38" (1/1) ... [2023-11-21 18:40:38,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:40:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:40:38,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:40:38,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:40:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:40:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:40:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:40:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:40:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:40:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:40:39,059 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:40:39,062 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:40:39,203 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:40:39,259 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:40:39,259 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:40:39,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:40:39 BoogieIcfgContainer [2023-11-21 18:40:39,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:40:39,276 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:40:39,276 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:40:39,284 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:40:39,284 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:40:39" (1/1) ... [2023-11-21 18:40:39,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:40:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:40:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:40:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:40:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:40:39,352 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:40:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:40:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:40:39,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:40:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:40:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:40:39,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:40:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:40:39,725 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:40:39,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:40:39 ImpRootNode [2023-11-21 18:40:39,758 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:40:39,759 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:40:39,759 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:40:39,760 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:40:39,760 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:40:39" (3/4) ... [2023-11-21 18:40:39,762 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:40:39,763 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:40:39,764 INFO L158 Benchmark]: Toolchain (without parser) took 2496.69ms. Allocated memory is still 199.2MB. Free memory was 150.1MB in the beginning and 105.1MB in the end (delta: 45.0MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2023-11-21 18:40:39,765 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:40:39,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1437.10ms. Allocated memory is still 199.2MB. Free memory was 150.1MB in the beginning and 143.7MB in the end (delta: 6.4MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. [2023-11-21 18:40:39,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.05ms. Allocated memory is still 199.2MB. Free memory was 143.7MB in the beginning and 140.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:40:39,767 INFO L158 Benchmark]: Boogie Preprocessor took 55.86ms. Allocated memory is still 199.2MB. Free memory was 140.7MB in the beginning and 139.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:40:39,768 INFO L158 Benchmark]: RCFGBuilder took 429.57ms. Allocated memory is still 199.2MB. Free memory was 139.5MB in the beginning and 123.9MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 18:40:39,768 INFO L158 Benchmark]: CodeCheck took 482.79ms. Allocated memory is still 199.2MB. Free memory was 123.9MB in the beginning and 106.0MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:40:39,769 INFO L158 Benchmark]: Witness Printer took 4.06ms. Allocated memory is still 199.2MB. Free memory was 106.0MB in the beginning and 105.1MB in the end (delta: 908.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:40:39,773 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, 15 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, 8 NumberOfCodeBlocks, 8 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: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1565. 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); [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1563] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1565] EXPR data = atoi(inputBuffer) [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561-L1571] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1572] CALL funcPtr(data) [L1551] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-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 0.33ms. Allocated memory is still 117.4MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1437.10ms. Allocated memory is still 199.2MB. Free memory was 150.1MB in the beginning and 143.7MB in the end (delta: 6.4MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.05ms. Allocated memory is still 199.2MB. Free memory was 143.7MB in the beginning and 140.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.86ms. Allocated memory is still 199.2MB. Free memory was 140.7MB in the beginning and 139.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.57ms. Allocated memory is still 199.2MB. Free memory was 139.5MB in the beginning and 123.9MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 482.79ms. Allocated memory is still 199.2MB. Free memory was 123.9MB in the beginning and 106.0MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.06ms. Allocated memory is still 199.2MB. Free memory was 106.0MB in the beginning and 105.1MB in the end (delta: 908.0kB). 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 18:40:39,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/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 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_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/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_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/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_273f7a49-0429-4e32-9e55-ccad698dac99/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 cc97983eee1bae1752601b2134a45f91e3415daed6bc26982b68c30eb488fa92 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:40:42,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:40:42,765 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:40:42,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:40:42,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:40:42,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:40:42,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:40:42,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:40:42,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:40:42,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:40:42,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:40:42,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:40:42,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:40:42,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:40:42,838 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:40:42,838 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:40:42,839 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:40:42,839 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:40:42,839 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:40:42,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:40:42,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:40:42,842 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:40:42,843 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:40:42,843 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:40:42,844 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:40:42,844 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:40:42,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:40:42,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:40:42,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:40:42,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:40:42,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:40:42,847 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:40:42,848 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:40:42,848 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:40:42,848 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:40:42,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:40:42,849 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_273f7a49-0429-4e32-9e55-ccad698dac99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc97983eee1bae1752601b2134a45f91e3415daed6bc26982b68c30eb488fa92 [2023-11-21 18:40:43,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:40:43,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:40:43,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:40:43,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:40:43,351 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:40:43,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i [2023-11-21 18:40:46,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:40:46,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:40:46,895 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i [2023-11-21 18:40:46,921 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/data/e8eea813c/21105313dc5c4a82a1fcc1f9c7549edd/FLAG07ecb2dd0 [2023-11-21 18:40:46,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/data/e8eea813c/21105313dc5c4a82a1fcc1f9c7549edd [2023-11-21 18:40:46,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:40:46,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:40:46,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:40:46,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:40:46,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:40:46,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:40:46" (1/1) ... [2023-11-21 18:40:46,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2581c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:46, skipping insertion in model container [2023-11-21 18:40:46,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:40:46" (1/1) ... [2023-11-21 18:40:47,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:40:47,435 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:40:48,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:40:48,131 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:40:48,175 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:40:48,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:40:48,506 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:48,507 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:48,507 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:48,507 WARN L675 CHandler]: The function funcPtr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:48,507 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:48,507 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:48,507 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:40:48,515 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:40:48,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48 WrapperNode [2023-11-21 18:40:48,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:40:48,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:40:48,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:40:48,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:40:48,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,626 INFO L138 Inliner]: procedures = 507, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2023-11-21 18:40:48,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:40:48,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:40:48,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:40:48,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:40:48,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:40:48,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:40:48,721 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:40:48,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:40:48,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:40:48" (1/1) ... [2023-11-21 18:40:48,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:40:48,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:40:48,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:40:48,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:40:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:40:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:40:48,795 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:40:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:40:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:40:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:40:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:40:48,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:40:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:40:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:40:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:40:48,978 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:40:48,980 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:40:49,130 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:40:49,204 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:40:49,204 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:40:49,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:40:49 BoogieIcfgContainer [2023-11-21 18:40:49,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:40:49,208 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:40:49,208 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:40:49,219 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:40:49,220 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:40:49" (1/1) ... [2023-11-21 18:40:49,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:40:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:40:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:40:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:40:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:40:49,318 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:40:49,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:40:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:40:49,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:40:49,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:40:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:40:49,650 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:40:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:40:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:40:49,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:40:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:40:50,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:40:50,010 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:40:50,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:40:50 ImpRootNode [2023-11-21 18:40:50,052 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:40:50,054 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:40:50,054 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:40:50,054 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:40:50,055 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:40:49" (3/4) ... [2023-11-21 18:40:50,057 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:40:50,058 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:40:50,059 INFO L158 Benchmark]: Toolchain (without parser) took 3119.37ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.3MB in the beginning and 67.4MB in the end (delta: -28.1MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-11-21 18:40:50,060 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 67.1MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:40:50,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1579.82ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.1MB in the beginning and 43.6MB in the end (delta: -4.4MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-11-21 18:40:50,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.52ms. Allocated memory is still 98.6MB. Free memory was 43.6MB in the beginning and 40.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:40:50,063 INFO L158 Benchmark]: Boogie Preprocessor took 91.70ms. Allocated memory is still 98.6MB. Free memory was 40.4MB in the beginning and 70.6MB in the end (delta: -30.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-11-21 18:40:50,064 INFO L158 Benchmark]: RCFGBuilder took 485.72ms. Allocated memory is still 98.6MB. Free memory was 70.6MB in the beginning and 53.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:40:50,065 INFO L158 Benchmark]: CodeCheck took 844.11ms. Allocated memory is still 98.6MB. Free memory was 53.2MB in the beginning and 68.0MB in the end (delta: -14.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:40:50,065 INFO L158 Benchmark]: Witness Printer took 4.42ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 67.4MB in the end (delta: 591.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:40:50,078 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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, 8 NumberOfCodeBlocks, 8 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: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1565. 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); [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1563] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1565] EXPR data = atoi(inputBuffer) [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561-L1571] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1572] CALL funcPtr(data) [L1551] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-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 0.68ms. Allocated memory is still 67.1MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1579.82ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.1MB in the beginning and 43.6MB in the end (delta: -4.4MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.52ms. Allocated memory is still 98.6MB. Free memory was 43.6MB in the beginning and 40.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.70ms. Allocated memory is still 98.6MB. Free memory was 40.4MB in the beginning and 70.6MB in the end (delta: -30.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * RCFGBuilder took 485.72ms. Allocated memory is still 98.6MB. Free memory was 70.6MB in the beginning and 53.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 844.11ms. Allocated memory is still 98.6MB. Free memory was 53.2MB in the beginning and 68.0MB in the end (delta: -14.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.42ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 67.4MB in the end (delta: 591.0kB). 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 18:40:50,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_273f7a49-0429-4e32-9e55-ccad698dac99/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample