./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 30e01a73 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_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/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_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 23cf0ffb9f962a6694e05d9cf94d91f079ea00e3188ad6187a3f8468cfb1f91c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:05:37,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:05:37,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:05:37,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:05:37,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:05:37,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:05:37,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:05:37,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:05:37,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:05:37,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:05:37,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:05:37,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:05:37,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:05:37,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:05:37,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:05:37,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:05:37,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:05:37,367 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:05:37,368 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:05:37,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:05:37,369 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:05:37,369 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:05:37,370 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:05:37,370 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:05:37,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:05:37,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:37,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:05:37,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:05:37,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:05:37,372 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:05:37,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:05:37,373 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:05:37,373 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_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23cf0ffb9f962a6694e05d9cf94d91f079ea00e3188ad6187a3f8468cfb1f91c [2023-11-23 20:05:37,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:05:37,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:05:37,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:05:37,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:05:37,698 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:05:37,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i [2023-11-23 20:05:40,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:05:41,214 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:05:41,220 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i [2023-11-23 20:05:41,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/data/4836d8faa/23cbfc2a87f34f66854c9dde495e3a71/FLAGebf79beb6 [2023-11-23 20:05:41,276 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/data/4836d8faa/23cbfc2a87f34f66854c9dde495e3a71 [2023-11-23 20:05:41,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:05:41,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:05:41,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:41,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:05:41,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:05:41,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:41" (1/1) ... [2023-11-23 20:05:41,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7908d3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:41, skipping insertion in model container [2023-11-23 20:05:41,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:41" (1/1) ... [2023-11-23 20:05:41,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:05:41,754 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:05:42,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:42,306 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:05:42,330 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:05:42,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:42,605 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:42,606 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:42,606 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:42,606 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:42,606 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:42,606 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:42,618 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:05:42,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42 WrapperNode [2023-11-23 20:05:42,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:42,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:42,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:05:42,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:05:42,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,713 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-11-23 20:05:42,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:42,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:05:42,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:05:42,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:05:42,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:05:42,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:05:42,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:05:42,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:05:42,746 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:42" (1/1) ... [2023-11-23 20:05:42,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:42,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:05:42,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:05:42,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:05:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:05:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:05:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:05:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:05:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:05:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:05:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:05:42,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:05:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:05:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:05:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:05:42,992 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:05:42,994 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:05:43,123 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:05:43,174 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:05:43,174 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:05:43,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:43 BoogieIcfgContainer [2023-11-23 20:05:43,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:05:43,177 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:05:43,177 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:05:43,185 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:05:43,185 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:43" (1/1) ... [2023-11-23 20:05:43,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:05:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:05:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:05:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:05:43,254 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:43,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:05:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:43,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:05:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:43,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:05:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:43,631 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:05:43,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:05:43 ImpRootNode [2023-11-23 20:05:43,671 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:05:43,673 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:05:43,673 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:05:43,674 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:05:43,674 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:43" (3/4) ... [2023-11-23 20:05:43,676 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:05:43,678 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:05:43,679 INFO L158 Benchmark]: Toolchain (without parser) took 2398.94ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 117.6MB in the beginning and 113.8MB in the end (delta: 3.8MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2023-11-23 20:05:43,680 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 118.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:43,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1338.07ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 117.6MB in the beginning and 151.5MB in the end (delta: -34.0MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2023-11-23 20:05:43,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.07ms. Allocated memory is still 195.0MB. Free memory was 151.5MB in the beginning and 148.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:05:43,685 INFO L158 Benchmark]: Boogie Preprocessor took 29.83ms. Allocated memory is still 195.0MB. Free memory was 148.4MB in the beginning and 146.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:05:43,686 INFO L158 Benchmark]: RCFGBuilder took 430.83ms. Allocated memory is still 195.0MB. Free memory was 146.3MB in the beginning and 131.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:05:43,687 INFO L158 Benchmark]: CodeCheck took 494.58ms. Allocated memory is still 195.0MB. Free memory was 131.6MB in the beginning and 113.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:05:43,689 INFO L158 Benchmark]: Witness Printer took 4.69ms. Allocated memory is still 195.0MB. Free memory was 113.8MB in the beginning and 113.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:05:43,702 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 0.24ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 118.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1338.07ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 117.6MB in the beginning and 151.5MB in the end (delta: -34.0MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.07ms. Allocated memory is still 195.0MB. Free memory was 151.5MB in the beginning and 148.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.83ms. Allocated memory is still 195.0MB. Free memory was 148.4MB in the beginning and 146.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.83ms. Allocated memory is still 195.0MB. Free memory was 146.3MB in the beginning and 131.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 494.58ms. Allocated memory is still 195.0MB. Free memory was 131.6MB in the beginning and 113.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.69ms. Allocated memory is still 195.0MB. Free memory was 113.8MB in the beginning and 113.8MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:05:43,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/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_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/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_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 23cf0ffb9f962a6694e05d9cf94d91f079ea00e3188ad6187a3f8468cfb1f91c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:05:46,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:05:46,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:05:46,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:05:46,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:05:46,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:05:46,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:05:46,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:05:46,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:05:46,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:05:46,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:05:46,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:05:46,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:05:46,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:05:46,585 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:05:46,585 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:05:46,586 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:05:46,586 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:05:46,587 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:05:46,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:05:46,588 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:05:46,589 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:05:46,589 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:05:46,590 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:05:46,590 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:05:46,591 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:05:46,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:05:46,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:46,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:05:46,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:05:46,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:05:46,594 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:05:46,594 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:05:46,595 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:05:46,595 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:05:46,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:05:46,596 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_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23cf0ffb9f962a6694e05d9cf94d91f079ea00e3188ad6187a3f8468cfb1f91c [2023-11-23 20:05:47,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:05:47,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:05:47,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:05:47,102 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:05:47,103 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:05:47,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i [2023-11-23 20:05:50,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:05:50,899 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:05:50,901 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_31_bad.i [2023-11-23 20:05:50,937 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/data/750aa4ecd/108f76149bf141cb86a8c6438ec82563/FLAGc98a7a0a9 [2023-11-23 20:05:50,954 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/data/750aa4ecd/108f76149bf141cb86a8c6438ec82563 [2023-11-23 20:05:50,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:05:50,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:05:50,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:50,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:05:50,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:05:50,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:50" (1/1) ... [2023-11-23 20:05:50,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67975c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:50, skipping insertion in model container [2023-11-23 20:05:50,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:05:50" (1/1) ... [2023-11-23 20:05:51,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:05:51,523 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:05:52,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:52,061 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:05:52,085 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:05:52,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:05:52,394 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:52,394 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:52,395 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:52,395 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:52,395 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:52,395 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:05:52,403 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:05:52,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52 WrapperNode [2023-11-23 20:05:52,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:05:52,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:52,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:05:52,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:05:52,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,505 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-11-23 20:05:52,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:05:52,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:05:52,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:05:52,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:05:52,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:05:52,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:05:52,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:05:52,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:05:52,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:05:52" (1/1) ... [2023-11-23 20:05:52,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:05:52,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:05:52,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:05:52,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:05:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:05:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:05:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:05:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:05:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:05:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:05:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:05:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:05:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:05:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:05:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:05:52,845 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:05:52,848 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:05:53,011 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:05:53,088 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:05:53,097 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:05:53,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:53 BoogieIcfgContainer [2023-11-23 20:05:53,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:05:53,100 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:05:53,100 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:05:53,110 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:05:53,111 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:53" (1/1) ... [2023-11-23 20:05:53,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:05:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:05:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:05:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:05:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:05:53,212 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:05:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:05:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:05:53,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:05:53,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:05:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:53,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:05:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:53,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:05:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:05:53,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:05:53,805 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:05:53,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:05:53 ImpRootNode [2023-11-23 20:05:53,849 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:05:53,851 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:05:53,851 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:05:53,852 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:05:53,852 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:05:53" (3/4) ... [2023-11-23 20:05:53,854 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:05:53,855 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:05:53,856 INFO L158 Benchmark]: Toolchain (without parser) took 2895.11ms. Allocated memory was 81.8MB in the beginning and 130.0MB in the end (delta: 48.2MB). Free memory was 53.8MB in the beginning and 87.4MB in the end (delta: -33.5MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2023-11-23 20:05:53,857 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 81.8MB. Free memory was 58.5MB in the beginning and 58.4MB in the end (delta: 92.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:53,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1440.62ms. Allocated memory was 81.8MB in the beginning and 130.0MB in the end (delta: 48.2MB). Free memory was 53.6MB in the beginning and 90.0MB in the end (delta: -36.3MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-11-23 20:05:53,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.99ms. Allocated memory is still 130.0MB. Free memory was 90.0MB in the beginning and 87.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:05:53,861 INFO L158 Benchmark]: Boogie Preprocessor took 64.93ms. Allocated memory is still 130.0MB. Free memory was 87.0MB in the beginning and 85.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:05:53,861 INFO L158 Benchmark]: RCFGBuilder took 527.84ms. Allocated memory is still 130.0MB. Free memory was 84.9MB in the beginning and 67.5MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:05:53,862 INFO L158 Benchmark]: CodeCheck took 748.96ms. Allocated memory is still 130.0MB. Free memory was 67.5MB in the beginning and 88.0MB in the end (delta: -20.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:53,863 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 130.0MB. Free memory was 88.0MB in the beginning and 87.4MB in the end (delta: 690.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:05:53,875 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: 0.7s, 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 0.67ms. Allocated memory is still 81.8MB. Free memory was 58.5MB in the beginning and 58.4MB in the end (delta: 92.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1440.62ms. Allocated memory was 81.8MB in the beginning and 130.0MB in the end (delta: 48.2MB). Free memory was 53.6MB in the beginning and 90.0MB in the end (delta: -36.3MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.99ms. Allocated memory is still 130.0MB. Free memory was 90.0MB in the beginning and 87.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.93ms. Allocated memory is still 130.0MB. Free memory was 87.0MB in the beginning and 85.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 527.84ms. Allocated memory is still 130.0MB. Free memory was 84.9MB in the beginning and 67.5MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 748.96ms. Allocated memory is still 130.0MB. Free memory was 67.5MB in the beginning and 88.0MB in the end (delta: -20.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 130.0MB. Free memory was 88.0MB in the beginning and 87.4MB in the end (delta: 690.7kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:05:53,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17528fbf-4661-4328-9648-b11b3f66a228/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample