./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_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_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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 3682323ed3f3e959210ae31f39b8472c2658a034394273605eede676a52e113f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 19:57:17,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 19:57:17,222 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 19:57:17,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 19:57:17,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 19:57:17,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 19:57:17,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 19:57:17,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 19:57:17,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 19:57:17,283 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 19:57:17,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 19:57:17,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 19:57:17,284 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 19:57:17,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 19:57:17,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 19:57:17,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 19:57:17,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 19:57:17,288 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 19:57:17,288 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 19:57:17,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 19:57:17,289 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 19:57:17,290 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 19:57:17,291 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 19:57:17,291 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 19:57:17,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 19:57:17,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 19:57:17,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 19:57:17,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 19:57:17,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 19:57:17,310 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 19:57:17,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 19:57:17,312 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 19:57:17,313 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_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3682323ed3f3e959210ae31f39b8472c2658a034394273605eede676a52e113f [2023-11-23 19:57:17,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 19:57:17,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 19:57:17,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 19:57:17,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 19:57:17,692 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 19:57:17,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2023-11-23 19:57:20,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 19:57:21,388 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 19:57:21,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2023-11-23 19:57:21,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/data/629415b9f/d9d9a8ff350e458f95eb498b4231e440/FLAG936623dc8 [2023-11-23 19:57:21,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/data/629415b9f/d9d9a8ff350e458f95eb498b4231e440 [2023-11-23 19:57:21,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 19:57:21,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 19:57:21,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 19:57:21,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 19:57:21,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 19:57:21,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:57:21" (1/1) ... [2023-11-23 19:57:21,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce03532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:21, skipping insertion in model container [2023-11-23 19:57:21,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:57:21" (1/1) ... [2023-11-23 19:57:21,558 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 19:57:22,016 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 19:57:22,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 19:57:22,695 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 19:57:22,731 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 19:57:22,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 19:57:23,029 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:23,029 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:23,030 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:23,030 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:23,030 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:23,030 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:23,037 INFO L206 MainTranslator]: Completed translation [2023-11-23 19:57:23,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23 WrapperNode [2023-11-23 19:57:23,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 19:57:23,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 19:57:23,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 19:57:23,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 19:57:23,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,140 INFO L138 Inliner]: procedures = 501, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-23 19:57:23,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 19:57:23,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 19:57:23,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 19:57:23,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 19:57:23,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 19:57:23,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 19:57:23,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 19:57:23,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 19:57:23,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 19:57:23,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 19:57:23,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 19:57:23,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 19:57:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 19:57:23,293 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 19:57:23,293 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 19:57:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 19:57:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 19:57:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 19:57:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 19:57:23,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 19:57:23,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 19:57:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 19:57:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 19:57:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 19:57:23,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 19:57:23,540 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 19:57:23,542 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 19:57:23,705 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 19:57:23,749 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 19:57:23,750 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 19:57:23,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:23 BoogieIcfgContainer [2023-11-23 19:57:23,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 19:57:23,752 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 19:57:23,753 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 19:57:23,766 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 19:57:23,773 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:23" (1/1) ... [2023-11-23 19:57:23,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 19:57:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 19:57:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 19:57:23,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 19:57:23,849 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 19:57:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 19:57:24,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 19:57:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 19:57:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 19:57:24,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 19:57:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 19:57:24,278 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 19:57:24,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 07:57:24 ImpRootNode [2023-11-23 19:57:24,311 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 19:57:24,316 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 19:57:24,316 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 19:57:24,316 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 19:57:24,317 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:23" (3/4) ... [2023-11-23 19:57:24,319 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 19:57:24,320 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 19:57:24,323 INFO L158 Benchmark]: Toolchain (without parser) took 2864.54ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 90.3MB in the beginning and 77.0MB in the end (delta: 13.3MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2023-11-23 19:57:24,324 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:24,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1577.32ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 90.3MB in the beginning and 119.2MB in the end (delta: -28.9MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2023-11-23 19:57:24,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.79ms. Allocated memory is still 172.0MB. Free memory was 119.2MB in the beginning and 116.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 19:57:24,327 INFO L158 Benchmark]: Boogie Preprocessor took 55.88ms. Allocated memory is still 172.0MB. Free memory was 116.0MB in the beginning and 115.1MB in the end (delta: 897.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:24,329 INFO L158 Benchmark]: RCFGBuilder took 553.12ms. Allocated memory is still 172.0MB. Free memory was 115.1MB in the beginning and 99.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 19:57:24,329 INFO L158 Benchmark]: CodeCheck took 558.34ms. Allocated memory is still 172.0MB. Free memory was 99.2MB in the beginning and 77.3MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 19:57:24,330 INFO L158 Benchmark]: Witness Printer took 5.51ms. Allocated memory is still 172.0MB. Free memory was 77.3MB in the beginning and 77.0MB in the end (delta: 301.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:24,351 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s 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: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_multiply_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1577] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, dataPtr={627:0}, dataPtr={627:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, dataPtr={627:0}, dataPtr={627:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1577.32ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 90.3MB in the beginning and 119.2MB in the end (delta: -28.9MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.79ms. Allocated memory is still 172.0MB. Free memory was 119.2MB in the beginning and 116.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.88ms. Allocated memory is still 172.0MB. Free memory was 116.0MB in the beginning and 115.1MB in the end (delta: 897.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 553.12ms. Allocated memory is still 172.0MB. Free memory was 115.1MB in the beginning and 99.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 558.34ms. Allocated memory is still 172.0MB. Free memory was 99.2MB in the beginning and 77.3MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.51ms. Allocated memory is still 172.0MB. Free memory was 77.3MB in the beginning and 77.0MB in the end (delta: 301.1kB). 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 19:57:24,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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 3682323ed3f3e959210ae31f39b8472c2658a034394273605eede676a52e113f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 19:57:27,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 19:57:27,167 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 19:57:27,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 19:57:27,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 19:57:27,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 19:57:27,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 19:57:27,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 19:57:27,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 19:57:27,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 19:57:27,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 19:57:27,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 19:57:27,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 19:57:27,206 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 19:57:27,207 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 19:57:27,207 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 19:57:27,208 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 19:57:27,208 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 19:57:27,209 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 19:57:27,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 19:57:27,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 19:57:27,210 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 19:57:27,211 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 19:57:27,211 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 19:57:27,212 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 19:57:27,213 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 19:57:27,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 19:57:27,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 19:57:27,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 19:57:27,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 19:57:27,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 19:57:27,215 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 19:57:27,216 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 19:57:27,216 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 19:57:27,217 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 19:57:27,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 19:57:27,218 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_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3682323ed3f3e959210ae31f39b8472c2658a034394273605eede676a52e113f [2023-11-23 19:57:27,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 19:57:27,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 19:57:27,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 19:57:27,593 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 19:57:27,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 19:57:27,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2023-11-23 19:57:30,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 19:57:31,340 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 19:57:31,341 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2023-11-23 19:57:31,381 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/data/fa2d6444b/1cb4c7c4cd46448d8a4f35db4aa4445b/FLAG963a3f4a3 [2023-11-23 19:57:31,401 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/data/fa2d6444b/1cb4c7c4cd46448d8a4f35db4aa4445b [2023-11-23 19:57:31,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 19:57:31,409 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 19:57:31,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 19:57:31,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 19:57:31,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 19:57:31,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:57:31" (1/1) ... [2023-11-23 19:57:31,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1d74fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:31, skipping insertion in model container [2023-11-23 19:57:31,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:57:31" (1/1) ... [2023-11-23 19:57:31,503 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 19:57:31,914 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 19:57:32,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 19:57:32,687 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 19:57:32,727 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 19:57:32,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 19:57:33,062 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:33,062 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:33,063 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:33,063 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:33,063 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:33,063 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 19:57:33,071 INFO L206 MainTranslator]: Completed translation [2023-11-23 19:57:33,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33 WrapperNode [2023-11-23 19:57:33,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 19:57:33,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 19:57:33,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 19:57:33,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 19:57:33,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,164 INFO L138 Inliner]: procedures = 506, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-11-23 19:57:33,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 19:57:33,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 19:57:33,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 19:57:33,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 19:57:33,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 19:57:33,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 19:57:33,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 19:57:33,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 19:57:33,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 19:57:33,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 19:57:33,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 19:57:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 19:57:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 19:57:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 19:57:33,318 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 19:57:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 19:57:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 19:57:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 19:57:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 19:57:33,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 19:57:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 19:57:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 19:57:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 19:57:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 19:57:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 19:57:33,508 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 19:57:33,510 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 19:57:33,727 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 19:57:33,767 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 19:57:33,767 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 19:57:33,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:33 BoogieIcfgContainer [2023-11-23 19:57:33,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 19:57:33,770 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 19:57:33,770 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 19:57:33,779 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 19:57:33,780 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:33" (1/1) ... [2023-11-23 19:57:33,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 19:57:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 19:57:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 19:57:33,857 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 19:57:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 19:57:33,864 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 19:57:33,865 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 19:57:33,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 19:57:33,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 19:57:33,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 19:57:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 19:57:34,188 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 19:57:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 19:57:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 19:57:34,641 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 19:57:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 19:57:34,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 19:57:34,888 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 19:57:34,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 07:57:34 ImpRootNode [2023-11-23 19:57:34,924 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 19:57:34,925 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 19:57:34,925 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 19:57:34,925 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 19:57:34,926 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:57:33" (3/4) ... [2023-11-23 19:57:34,927 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 19:57:34,931 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 19:57:34,933 INFO L158 Benchmark]: Toolchain (without parser) took 3522.77ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 46.3MB in the beginning and 52.6MB in the end (delta: -6.4MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-11-23 19:57:34,933 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 73.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:34,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1661.13ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 45.9MB in the beginning and 69.2MB in the end (delta: -23.3MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-11-23 19:57:34,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.53ms. Allocated memory is still 98.6MB. Free memory was 69.2MB in the beginning and 66.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 19:57:34,936 INFO L158 Benchmark]: Boogie Preprocessor took 63.91ms. Allocated memory is still 98.6MB. Free memory was 66.2MB in the beginning and 64.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 19:57:34,937 INFO L158 Benchmark]: RCFGBuilder took 539.01ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 45.8MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 19:57:34,938 INFO L158 Benchmark]: CodeCheck took 1154.65ms. Allocated memory is still 98.6MB. Free memory was 45.8MB in the beginning and 52.6MB in the end (delta: -6.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:34,938 INFO L158 Benchmark]: Witness Printer took 6.76ms. Allocated memory is still 98.6MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 19:57:34,947 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_multiply_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1577] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 73.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1661.13ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 45.9MB in the beginning and 69.2MB in the end (delta: -23.3MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.53ms. Allocated memory is still 98.6MB. Free memory was 69.2MB in the beginning and 66.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.91ms. Allocated memory is still 98.6MB. Free memory was 66.2MB in the beginning and 64.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 539.01ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 45.8MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 1154.65ms. Allocated memory is still 98.6MB. Free memory was 45.8MB in the beginning and 52.6MB in the end (delta: -6.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.76ms. Allocated memory is still 98.6MB. Free memory is still 52.6MB. 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 19:57:34,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22edc2c1-f23c-4f28-a1b9-5428d30d7222/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