./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1280eedf37cdcd0a55d50ddad68050c61c16bd95d7a2c9d9060d4388e6bafc10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:49:59,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:49:59,344 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:49:59,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:49:59,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:49:59,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:49:59,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:49:59,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:49:59,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:49:59,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:49:59,408 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:49:59,408 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:49:59,409 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:49:59,411 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:49:59,411 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:49:59,412 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:49:59,412 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:49:59,413 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:49:59,413 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:49:59,414 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:49:59,414 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:49:59,415 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:49:59,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:49:59,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:49:59,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:49:59,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:49:59,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:49:59,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:49:59,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:49:59,419 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:49:59,421 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:49:59,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:49:59,421 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:49:59,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:49:59,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:49:59,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:59,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:49:59,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:49:59,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:49:59,424 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:49:59,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:49:59,425 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:49:59,425 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:49:59,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:49:59,426 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1280eedf37cdcd0a55d50ddad68050c61c16bd95d7a2c9d9060d4388e6bafc10 [2023-11-19 04:49:59,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:49:59,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:49:59,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:49:59,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:49:59,783 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:49:59,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2023-11-19 04:50:02,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:50:03,361 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:50:03,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2023-11-19 04:50:03,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/data/dc0758a1e/ffa6f08ac48d4ea29019472916892a26/FLAGde07bbeea [2023-11-19 04:50:03,413 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/data/dc0758a1e/ffa6f08ac48d4ea29019472916892a26 [2023-11-19 04:50:03,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:50:03,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:50:03,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:03,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:50:03,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:50:03,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:03" (1/1) ... [2023-11-19 04:50:03,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a87eab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:03, skipping insertion in model container [2023-11-19 04:50:03,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:03" (1/1) ... [2023-11-19 04:50:03,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:04,004 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:50:04,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:04,664 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:50:04,699 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:50:04,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:04,917 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:04,921 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:04,921 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:04,921 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:04,922 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:04,922 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:04,929 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:50:04,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04 WrapperNode [2023-11-19 04:50:04,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:04,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:04,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:50:04,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:50:04,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:04,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,012 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-19 04:50:05,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:05,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:50:05,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:50:05,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:50:05,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:50:05,066 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:50:05,066 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:50:05,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:50:05,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (1/1) ... [2023-11-19 04:50:05,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:05,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:05,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:50:05,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:50:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:50:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:50:05,144 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:50:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:50:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:50:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:50:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:50:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:50:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:50:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:50:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:50:05,313 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:50:05,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:50:05,474 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:50:05,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:50:05,518 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:50:05,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:05 BoogieIcfgContainer [2023-11-19 04:50:05,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:50:05,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:50:05,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:50:05,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:50:05,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:50:03" (1/3) ... [2023-11-19 04:50:05,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b7918a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:05, skipping insertion in model container [2023-11-19 04:50:05,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:04" (2/3) ... [2023-11-19 04:50:05,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b7918a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:05, skipping insertion in model container [2023-11-19 04:50:05,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:05" (3/3) ... [2023-11-19 04:50:05,534 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2023-11-19 04:50:05,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:50:05,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:50:05,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:50:05,606 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d31d7bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:50:05,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:50:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:50:05,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:05,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:05,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 04:50:05,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1634005447, now seen corresponding path program 1 times [2023-11-19 04:50:05,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:05,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890404379] [2023-11-19 04:50:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:05,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:50:05,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:50:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:50:05,873 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:50:05,876 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:50:05,877 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 04:50:05,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 04:50:05,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:50:05,886 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:50:05,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:50:05,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:50:05 BoogieIcfgContainer [2023-11-19 04:50:05,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:50:05,920 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:50:05,920 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:50:05,920 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:50:05,921 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:05" (3/4) ... [2023-11-19 04:50:05,923 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:50:05,925 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:50:05,926 INFO L158 Benchmark]: Toolchain (without parser) took 2502.12ms. Allocated memory is still 163.6MB. Free memory was 115.3MB in the beginning and 57.6MB in the end (delta: 57.6MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2023-11-19 04:50:05,927 INFO L158 Benchmark]: CDTParser took 2.22ms. Allocated memory is still 107.0MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:50:05,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1500.30ms. Allocated memory is still 163.6MB. Free memory was 114.8MB in the beginning and 95.4MB in the end (delta: 19.4MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2023-11-19 04:50:05,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.60ms. Allocated memory is still 163.6MB. Free memory was 95.4MB in the beginning and 92.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:50:05,929 INFO L158 Benchmark]: Boogie Preprocessor took 38.32ms. Allocated memory is still 163.6MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:50:05,930 INFO L158 Benchmark]: RCFGBuilder took 457.27ms. Allocated memory is still 163.6MB. Free memory was 90.2MB in the beginning and 75.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:50:05,931 INFO L158 Benchmark]: TraceAbstraction took 392.50ms. Allocated memory is still 163.6MB. Free memory was 74.6MB in the beginning and 57.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:50:05,932 INFO L158 Benchmark]: Witness Printer took 5.41ms. Allocated memory is still 163.6MB. Free memory was 57.8MB in the beginning and 57.6MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:50:05,936 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.22ms. Allocated memory is still 107.0MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1500.30ms. Allocated memory is still 163.6MB. Free memory was 114.8MB in the beginning and 95.4MB in the end (delta: 19.4MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.60ms. Allocated memory is still 163.6MB. Free memory was 95.4MB in the beginning and 92.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.32ms. Allocated memory is still 163.6MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 457.27ms. Allocated memory is still 163.6MB. Free memory was 90.2MB in the beginning and 75.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 392.50ms. Allocated memory is still 163.6MB. Free memory was 74.6MB in the beginning and 57.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.41ms. Allocated memory is still 163.6MB. Free memory was 57.8MB in the beginning and 57.6MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1573. 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); [L1562] 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={2:0}] [L1414] COND TRUE line != ((void *)0) [L1562] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741825, argc=1073741825, argv={1073741827:1073741826}, argv={1073741827:1073741826}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] CALL CWE191_Integer_Underflow__int_fgets_sub_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1570] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1571] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1573] EXPR data = atoi(inputBuffer) [L1570] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569-L1579] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1580] return data; [L1553] RET, EXPR CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1553] data = CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1555] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:50:05,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1280eedf37cdcd0a55d50ddad68050c61c16bd95d7a2c9d9060d4388e6bafc10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:50:08,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:50:08,789 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-19 04:50:08,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:50:08,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:50:08,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:50:08,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:50:08,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:50:08,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:50:08,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:50:08,825 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:50:08,826 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:50:08,826 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:50:08,827 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:50:08,827 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:50:08,828 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:50:08,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:50:08,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:50:08,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:50:08,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:50:08,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:50:08,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:50:08,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:50:08,834 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:50:08,835 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:50:08,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:50:08,836 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:50:08,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:50:08,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:50:08,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:50:08,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:50:08,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:50:08,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:08,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:50:08,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:50:08,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:50:08,840 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:50:08,840 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:50:08,840 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:50:08,841 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:50:08,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:50:08,842 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_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1280eedf37cdcd0a55d50ddad68050c61c16bd95d7a2c9d9060d4388e6bafc10 [2023-11-19 04:50:09,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:50:09,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:50:09,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:50:09,255 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:50:09,255 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:50:09,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2023-11-19 04:50:12,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:50:13,009 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:50:13,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2023-11-19 04:50:13,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/data/76ad972ee/a70b8fd9429b46f58e5de714b5eac419/FLAG9cf0ee6af [2023-11-19 04:50:13,067 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/data/76ad972ee/a70b8fd9429b46f58e5de714b5eac419 [2023-11-19 04:50:13,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:50:13,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:50:13,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:13,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:50:13,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:50:13,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:13" (1/1) ... [2023-11-19 04:50:13,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148ae3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:13, skipping insertion in model container [2023-11-19 04:50:13,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:13" (1/1) ... [2023-11-19 04:50:13,188 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:13,626 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:50:14,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:14,317 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:50:14,357 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:50:14,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:14,598 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:14,599 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:14,599 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:14,599 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:14,599 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:14,600 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:14,609 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:50:14,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14 WrapperNode [2023-11-19 04:50:14,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:14,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:14,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:50:14,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:50:14,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,682 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2023-11-19 04:50:14,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:14,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:50:14,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:50:14,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:50:14,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:50:14,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:50:14,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:50:14,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:50:14,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:14,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:14,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:50:14,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:50:14,837 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:50:14,837 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:50:14,838 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:50:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:50:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:50:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:50:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:50:14,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:50:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:50:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:50:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 04:50:15,031 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:50:15,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:50:15,189 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:50:15,198 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:50:15,198 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:50:15,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:15 BoogieIcfgContainer [2023-11-19 04:50:15,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:50:15,205 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:50:15,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:50:15,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:50:15,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:50:13" (1/3) ... [2023-11-19 04:50:15,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c93bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:15, skipping insertion in model container [2023-11-19 04:50:15,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14" (2/3) ... [2023-11-19 04:50:15,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c93bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:15, skipping insertion in model container [2023-11-19 04:50:15,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:15" (3/3) ... [2023-11-19 04:50:15,213 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_61_bad.i [2023-11-19 04:50:15,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:50:15,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:50:15,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:50:15,300 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@722493ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:50:15,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:50:15,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:50:15,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:15,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:15,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 04:50:15,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2023-11-19 04:50:15,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:15,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481493217] [2023-11-19 04:50:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:15,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:50:15,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:15,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:50:15,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:50:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:50:15,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:50:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:50:15,623 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 04:50:15,627 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:50:15,628 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 04:50:15,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 04:50:15,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:50:15,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:50:15,851 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:50:15,855 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:50:15,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:50:15 BoogieIcfgContainer [2023-11-19 04:50:15,888 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:50:15,888 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:50:15,892 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:50:15,893 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:50:15,893 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:15" (3/4) ... [2023-11-19 04:50:15,896 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:50:15,897 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:50:15,899 INFO L158 Benchmark]: Toolchain (without parser) took 2817.86ms. Allocated memory was 79.7MB in the beginning and 111.1MB in the end (delta: 31.5MB). Free memory was 52.4MB in the beginning and 52.4MB in the end (delta: 34.2kB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2023-11-19 04:50:15,900 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:50:15,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1524.52ms. Allocated memory was 79.7MB in the beginning and 111.1MB in the end (delta: 31.5MB). Free memory was 52.4MB in the beginning and 59.1MB in the end (delta: -6.7MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-11-19 04:50:15,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.21ms. Allocated memory is still 111.1MB. Free memory was 59.1MB in the beginning and 56.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:50:15,909 INFO L158 Benchmark]: Boogie Preprocessor took 41.01ms. Allocated memory is still 111.1MB. Free memory was 56.0MB in the beginning and 54.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:50:15,910 INFO L158 Benchmark]: RCFGBuilder took 476.67ms. Allocated memory is still 111.1MB. Free memory was 54.0MB in the beginning and 71.3MB in the end (delta: -17.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2023-11-19 04:50:15,913 INFO L158 Benchmark]: TraceAbstraction took 682.54ms. Allocated memory is still 111.1MB. Free memory was 70.7MB in the beginning and 53.1MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:50:15,913 INFO L158 Benchmark]: Witness Printer took 9.03ms. Allocated memory is still 111.1MB. Free memory was 53.1MB in the beginning and 52.4MB in the end (delta: 730.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:50:15,917 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1524.52ms. Allocated memory was 79.7MB in the beginning and 111.1MB in the end (delta: 31.5MB). Free memory was 52.4MB in the beginning and 59.1MB in the end (delta: -6.7MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.21ms. Allocated memory is still 111.1MB. Free memory was 59.1MB in the beginning and 56.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.01ms. Allocated memory is still 111.1MB. Free memory was 56.0MB in the beginning and 54.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.67ms. Allocated memory is still 111.1MB. Free memory was 54.0MB in the beginning and 71.3MB in the end (delta: -17.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * TraceAbstraction took 682.54ms. Allocated memory is still 111.1MB. Free memory was 70.7MB in the beginning and 53.1MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 9.03ms. Allocated memory is still 111.1MB. Free memory was 53.1MB in the beginning and 52.4MB in the end (delta: 730.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1573. 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1562] 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={2:0}] [L1414] COND TRUE line != ((void *)0) [L1562] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] CALL CWE191_Integer_Underflow__int_fgets_sub_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1570] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1571] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1573] EXPR data = atoi(inputBuffer) [L1570] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569-L1579] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1580] return data; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=0, \result=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] RET, EXPR CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1553] data = CWE191_Integer_Underflow__int_fgets_sub_61b_badSource(data) [L1555] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:50:15,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3836bfac-2637-4262-87bd-09f642dd651d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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