./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/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_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/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_9ffb4563-8aff-460f-8364-a10999949af5/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 a0cbddd8e25a6e3b38116e03f8f52c69c0e00660fb4ec0212bf11ee637aa2208 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:07:34,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:07:34,718 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:07:34,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:07:34,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:07:34,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:07:34,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:07:34,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:07:34,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:07:34,768 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:07:34,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:07:34,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:07:34,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:07:34,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:07:34,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:07:34,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:07:34,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:07:34,774 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:07:34,774 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:07:34,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:07:34,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:07:34,776 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:07:34,776 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:07:34,777 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:07:34,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:07:34,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:07:34,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:07:34,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:07:34,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:07:34,779 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:07:34,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:07:34,781 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:07:34,781 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_9ffb4563-8aff-460f-8364-a10999949af5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0cbddd8e25a6e3b38116e03f8f52c69c0e00660fb4ec0212bf11ee637aa2208 [2023-11-23 20:07:35,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:07:35,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:07:35,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:07:35,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:07:35,106 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:07:35,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-23 20:07:38,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:07:38,765 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:07:38,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-23 20:07:38,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/data/9e6267c85/dd7213162de44212aa5e1093b7cac352/FLAG4b917a882 [2023-11-23 20:07:38,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/data/9e6267c85/dd7213162de44212aa5e1093b7cac352 [2023-11-23 20:07:38,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:07:38,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:07:38,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:07:38,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:07:38,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:07:38,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:07:38" (1/1) ... [2023-11-23 20:07:38,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282f41e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:38, skipping insertion in model container [2023-11-23 20:07:38,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:07:38" (1/1) ... [2023-11-23 20:07:38,920 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:07:39,375 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:07:40,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:07:40,031 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:07:40,070 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:07:40,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:07:40,362 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:40,362 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:40,362 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:40,362 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:40,362 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:40,363 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:40,371 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:07:40,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40 WrapperNode [2023-11-23 20:07:40,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:07:40,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:07:40,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:07:40,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:07:40,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,443 INFO L138 Inliner]: procedures = 500, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2023-11-23 20:07:40,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:07:40,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:07:40,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:07:40,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:07:40,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:07:40,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:07:40,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:07:40,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:07:40,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:40" (1/1) ... [2023-11-23 20:07:40,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:07:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:07:40,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:07:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:07:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:07:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:07:40,597 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:07:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:07:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:07:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:07:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:07:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:07:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:07:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:07:40,843 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:07:40,847 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:07:40,997 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:07:41,045 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:07:41,045 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:07:41,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:07:41 BoogieIcfgContainer [2023-11-23 20:07:41,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:07:41,048 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:07:41,048 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:07:41,059 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:07:41,059 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:07:41" (1/1) ... [2023-11-23 20:07:41,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:07:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:07:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:07:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:07:41,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:07:41,132 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:07:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:07:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:07:41,285 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:07:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:07:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:07:41,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:07:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:07:41,449 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:07:41,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:07:41 ImpRootNode [2023-11-23 20:07:41,479 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:07:41,480 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:07:41,480 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:07:41,480 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:07:41,481 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:07:41" (3/4) ... [2023-11-23 20:07:41,483 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:07:41,484 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:07:41,485 INFO L158 Benchmark]: Toolchain (without parser) took 2658.16ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 123.0MB in the beginning and 111.6MB in the end (delta: 11.3MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-23 20:07:41,486 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:07:41,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1542.73ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 122.5MB in the beginning and 151.5MB in the end (delta: -29.0MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2023-11-23 20:07:41,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.57ms. Allocated memory is still 192.9MB. Free memory was 151.5MB in the beginning and 148.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:07:41,488 INFO L158 Benchmark]: Boogie Preprocessor took 49.63ms. Allocated memory is still 192.9MB. Free memory was 148.3MB in the beginning and 147.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:07:41,489 INFO L158 Benchmark]: RCFGBuilder took 535.99ms. Allocated memory is still 192.9MB. Free memory was 146.1MB in the beginning and 131.6MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:07:41,490 INFO L158 Benchmark]: CodeCheck took 430.96ms. Allocated memory is still 192.9MB. Free memory was 131.6MB in the beginning and 111.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:07:41,490 INFO L158 Benchmark]: Witness Printer took 4.77ms. Allocated memory is still 192.9MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:07:41,493 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: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1582] 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) [L1582] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={19:13}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1583] CALL CWE191_Integer_Underflow__int_fgets_multiply_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_multiply_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1572] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={25194:0}] [L1574] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={25194:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1542.73ms. Allocated memory was 157.3MB in the beginning and 192.9MB in the end (delta: 35.7MB). Free memory was 122.5MB in the beginning and 151.5MB in the end (delta: -29.0MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.57ms. Allocated memory is still 192.9MB. Free memory was 151.5MB in the beginning and 148.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.63ms. Allocated memory is still 192.9MB. Free memory was 148.3MB in the beginning and 147.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 535.99ms. Allocated memory is still 192.9MB. Free memory was 146.1MB in the beginning and 131.6MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 430.96ms. Allocated memory is still 192.9MB. Free memory was 131.6MB in the beginning and 111.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.77ms. Allocated memory is still 192.9MB. Free memory is still 111.6MB. 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 20:07:41,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/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_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/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_9ffb4563-8aff-460f-8364-a10999949af5/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 a0cbddd8e25a6e3b38116e03f8f52c69c0e00660fb4ec0212bf11ee637aa2208 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:07:44,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:07:44,316 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:07:44,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:07:44,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:07:44,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:07:44,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:07:44,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:07:44,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:07:44,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:07:44,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:07:44,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:07:44,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:07:44,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:07:44,377 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:07:44,378 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:07:44,378 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:07:44,379 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:07:44,379 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:07:44,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:07:44,381 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:07:44,382 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:07:44,382 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:07:44,383 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:07:44,383 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:07:44,383 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:07:44,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:07:44,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:07:44,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:07:44,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:07:44,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:07:44,387 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:07:44,387 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:07:44,387 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:07:44,388 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:07:44,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:07:44,388 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_9ffb4563-8aff-460f-8364-a10999949af5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0cbddd8e25a6e3b38116e03f8f52c69c0e00660fb4ec0212bf11ee637aa2208 [2023-11-23 20:07:44,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:07:44,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:07:44,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:07:44,842 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:07:44,843 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:07:44,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-23 20:07:48,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:07:48,543 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:07:48,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-23 20:07:48,577 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/data/0acb21180/03327e6f05b74c9e9277c60af82737d7/FLAGbec1f567c [2023-11-23 20:07:48,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/data/0acb21180/03327e6f05b74c9e9277c60af82737d7 [2023-11-23 20:07:48,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:07:48,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:07:48,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:07:48,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:07:48,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:07:48,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:07:48" (1/1) ... [2023-11-23 20:07:48,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632d3cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:48, skipping insertion in model container [2023-11-23 20:07:48,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:07:48" (1/1) ... [2023-11-23 20:07:48,699 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:07:49,247 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:07:49,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:07:49,914 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:07:49,950 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:07:50,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:07:50,197 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:50,198 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:50,200 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:50,200 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:50,201 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:50,201 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:07:50,209 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:07:50,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50 WrapperNode [2023-11-23 20:07:50,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:07:50,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:07:50,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:07:50,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:07:50,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,287 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,318 INFO L138 Inliner]: procedures = 505, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-11-23 20:07:50,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:07:50,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:07:50,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:07:50,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:07:50,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:07:50,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:07:50,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:07:50,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:07:50,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:50,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:07:50,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:07:50,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:07:50,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:07:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:07:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:07:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:07:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:07:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:07:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:07:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:07:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:07:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 20:07:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:07:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:07:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:07:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:07:50,702 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:07:50,705 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:07:50,937 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:07:50,984 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:07:50,984 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:07:50,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:07:50 BoogieIcfgContainer [2023-11-23 20:07:50,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:07:50,987 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:07:50,987 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:07:50,999 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:07:50,999 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:07:50" (1/1) ... [2023-11-23 20:07:51,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:07:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:07:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:07:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:07:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:07:51,101 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:07:51,102 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:07:51,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:07:51,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:07:51,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:07:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:07:51,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:07:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:07:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:07:51,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:07:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:07:51,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:07:51,941 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:07:52,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:07:52 ImpRootNode [2023-11-23 20:07:52,007 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:07:52,011 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:07:52,011 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:07:52,011 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:07:52,012 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:07:50" (3/4) ... [2023-11-23 20:07:52,014 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:07:52,016 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:07:52,017 INFO L158 Benchmark]: Toolchain (without parser) took 3410.95ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 45.9MB in the beginning and 64.4MB in the end (delta: -18.5MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2023-11-23 20:07:52,018 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 48.8MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:07:52,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1601.81ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 45.7MB in the beginning and 57.9MB in the end (delta: -12.2MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2023-11-23 20:07:52,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.11ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 54.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:07:52,022 INFO L158 Benchmark]: Boogie Preprocessor took 43.07ms. Allocated memory is still 94.4MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:07:52,023 INFO L158 Benchmark]: RCFGBuilder took 623.33ms. Allocated memory is still 94.4MB. Free memory was 52.5MB in the beginning and 59.1MB in the end (delta: -6.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:07:52,023 INFO L158 Benchmark]: CodeCheck took 1020.45ms. Allocated memory is still 94.4MB. Free memory was 59.1MB in the beginning and 64.9MB in the end (delta: -5.8MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-11-23 20:07:52,028 INFO L158 Benchmark]: Witness Printer took 5.27ms. Allocated memory is still 94.4MB. Free memory was 64.9MB in the beginning and 64.4MB in the end (delta: 491.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:07:52,037 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: 0.9s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1582] 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) [L1582] 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] [L1583] CALL CWE191_Integer_Underflow__int_fgets_multiply_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_multiply_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1572] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] [L1574] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 48.8MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1601.81ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 45.7MB in the beginning and 57.9MB in the end (delta: -12.2MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.11ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 54.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.07ms. Allocated memory is still 94.4MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.33ms. Allocated memory is still 94.4MB. Free memory was 52.5MB in the beginning and 59.1MB in the end (delta: -6.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 1020.45ms. Allocated memory is still 94.4MB. Free memory was 59.1MB in the beginning and 64.9MB in the end (delta: -5.8MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Witness Printer took 5.27ms. Allocated memory is still 94.4MB. Free memory was 64.9MB in the beginning and 64.4MB in the end (delta: 491.6kB). 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 20:07:52,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffb4563-8aff-460f-8364-a10999949af5/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