./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_64_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9ebc932bd199917f9ad99094f7e9284ecfea27512ecfbbcfcde8a19d6cf35dc5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:36:20,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:36:20,677 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 05:36:20,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:36:20,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:36:20,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:36:20,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:36:20,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:36:20,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:36:20,709 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:36:20,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:36:20,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:36:20,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:36:20,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:36:20,711 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:36:20,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:36:20,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:36:20,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:36:20,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:36:20,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:36:20,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:36:20,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:36:20,716 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:36:20,716 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:36:20,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:36:20,717 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:36:20,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:36:20,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:36:20,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:36:20,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:36:20,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:36:20,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:36:20,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:36:20,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:36:20,720 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:36:20,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:36:20,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:36:20,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:36:20,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:36:20,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:36:20,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:36:20,722 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ebc932bd199917f9ad99094f7e9284ecfea27512ecfbbcfcde8a19d6cf35dc5 [2023-11-29 05:36:20,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:36:20,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:36:20,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:36:20,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:36:20,954 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:36:20,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_64_bad.i [2023-11-29 05:36:23,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:36:24,021 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:36:24,022 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_64_bad.i [2023-11-29 05:36:24,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/data/ce57aa443/da0aaa4d70b642788c8538fa7c5a3a6a/FLAG13fe0c7d5 [2023-11-29 05:36:24,060 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/data/ce57aa443/da0aaa4d70b642788c8538fa7c5a3a6a [2023-11-29 05:36:24,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:36:24,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:36:24,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:36:24,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:36:24,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:36:24,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:36:24" (1/1) ... [2023-11-29 05:36:24,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fca9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:24, skipping insertion in model container [2023-11-29 05:36:24,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:36:24" (1/1) ... [2023-11-29 05:36:24,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:36:24,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:36:24,868 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:36:24,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:36:25,028 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:25,029 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:25,029 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:25,029 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:25,029 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:25,035 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:36:25,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25 WrapperNode [2023-11-29 05:36:25,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:36:25,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:36:25,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:36:25,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:36:25,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,090 INFO L138 Inliner]: procedures = 500, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2023-11-29 05:36:25,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:36:25,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:36:25,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:36:25,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:36:25,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,136 INFO L175 MemorySlicer]: Split 7 memory accesses to 4 slices as follows [1, 1, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2023-11-29 05:36:25,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:36:25,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:36:25,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:36:25,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:36:25,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (1/1) ... [2023-11-29 05:36:25,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:36:25,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:36:25,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:36:25,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:36:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-29 05:36:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-29 05:36:25,225 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-29 05:36:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:36:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-29 05:36:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-29 05:36:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-29 05:36:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-29 05:36:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:36:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:36:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:36:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:36:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:36:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:36:25,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:36:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:36:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 05:36:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:36:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:36:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:36:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:36:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:36:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:36:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:36:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:36:25,380 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:36:25,382 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:36:25,491 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:36:25,520 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:36:25,520 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:36:25,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:25 BoogieIcfgContainer [2023-11-29 05:36:25,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:36:25,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:36:25,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:36:25,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:36:25,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:36:24" (1/3) ... [2023-11-29 05:36:25,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce4d877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:36:25, skipping insertion in model container [2023-11-29 05:36:25,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:25" (2/3) ... [2023-11-29 05:36:25,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce4d877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:36:25, skipping insertion in model container [2023-11-29 05:36:25,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:25" (3/3) ... [2023-11-29 05:36:25,528 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_64_bad.i [2023-11-29 05:36:25,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:36:25,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:36:25,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:36:25,583 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=PETRI_NET, 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;@7a3abcc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:36:25,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:36:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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) [2023-11-29 05:36:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 05:36:25,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:25,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:36:25,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-29 05:36:25,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1799562210, now seen corresponding path program 1 times [2023-11-29 05:36:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429429965] [2023-11-29 05:36:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:25,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:36:25,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:36:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:36:25,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:36:25,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:36:25,804 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-29 05:36:25,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-29 05:36:25,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:36:25,810 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 05:36:25,813 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:36:25,827 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-11-29 05:36:25,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:36:25 BoogieIcfgContainer [2023-11-29 05:36:25,835 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:36:25,836 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:36:25,836 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:36:25,836 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:36:25,837 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:25" (3/4) ... [2023-11-29 05:36:25,839 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 05:36:25,839 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:36:25,840 INFO L158 Benchmark]: Toolchain (without parser) took 1776.65ms. Allocated memory is still 167.8MB. Free memory was 132.4MB in the beginning and 99.8MB in the end (delta: 32.7MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-11-29 05:36:25,840 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:36:25,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 970.89ms. Allocated memory is still 167.8MB. Free memory was 132.1MB in the beginning and 68.2MB in the end (delta: 63.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2023-11-29 05:36:25,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.30ms. Allocated memory is still 167.8MB. Free memory was 68.2MB in the beginning and 65.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 05:36:25,842 INFO L158 Benchmark]: Boogie Preprocessor took 61.85ms. Allocated memory is still 167.8MB. Free memory was 65.1MB in the beginning and 136.7MB in the end (delta: -71.6MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-11-29 05:36:25,843 INFO L158 Benchmark]: RCFGBuilder took 367.51ms. Allocated memory is still 167.8MB. Free memory was 136.7MB in the beginning and 119.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 05:36:25,844 INFO L158 Benchmark]: TraceAbstraction took 312.00ms. Allocated memory is still 167.8MB. Free memory was 119.4MB in the beginning and 100.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 05:36:25,844 INFO L158 Benchmark]: Witness Printer took 3.51ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 99.8MB in the end (delta: 783.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:36:25,848 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 970.89ms. Allocated memory is still 167.8MB. Free memory was 132.1MB in the beginning and 68.2MB in the end (delta: 63.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.30ms. Allocated memory is still 167.8MB. Free memory was 68.2MB in the beginning and 65.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.85ms. Allocated memory is still 167.8MB. Free memory was 65.1MB in the beginning and 136.7MB in the end (delta: -71.6MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * RCFGBuilder took 367.51ms. Allocated memory is still 167.8MB. Free memory was 136.7MB in the beginning and 119.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 312.00ms. Allocated memory is still 167.8MB. Free memory was 119.4MB in the beginning and 100.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.51ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 99.8MB in the end (delta: 783.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet102 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 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, overapproximation of large string literal at line 1569. 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)=1073741829, argc=1073741829, argv={1073741831:1073741830}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_64_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [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_sub_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1579] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataVoidPtr={6:0}, dataVoidPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1579]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=18occurred 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, 10 NumberOfCodeBlocks, 10 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 [2023-11-29 05:36:25,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9ebc932bd199917f9ad99094f7e9284ecfea27512ecfbbcfcde8a19d6cf35dc5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:36:27,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:36:27,990 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-29 05:36:27,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:36:27,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:36:27,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-29 05:36:28,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:36:28,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:36:28,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:36:28,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:36:28,029 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:36:28,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:36:28,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:36:28,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:36:28,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:36:28,033 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:36:28,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:36:28,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:36:28,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:36:28,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:36:28,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:36:28,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:36:28,037 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:36:28,037 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 05:36:28,038 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:36:28,038 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 05:36:28,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:36:28,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:36:28,039 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:36:28,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:36:28,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:36:28,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:36:28,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:36:28,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:36:28,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:36:28,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:36:28,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:36:28,043 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 05:36:28,043 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 05:36:28,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:36:28,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:36:28,044 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:36:28,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:36:28,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:36:28,044 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 05:36:28,045 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ebc932bd199917f9ad99094f7e9284ecfea27512ecfbbcfcde8a19d6cf35dc5 [2023-11-29 05:36:28,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:36:28,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:36:28,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:36:28,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:36:28,377 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:36:28,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_64_bad.i [2023-11-29 05:36:31,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:36:31,494 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:36:31,495 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_64_bad.i [2023-11-29 05:36:31,519 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/data/b34ef7813/a6163467019c4260854230fdb012c4a8/FLAG0a24427c4 [2023-11-29 05:36:31,534 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/data/b34ef7813/a6163467019c4260854230fdb012c4a8 [2023-11-29 05:36:31,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:36:31,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:36:31,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:36:31,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:36:31,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:36:31,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:36:31" (1/1) ... [2023-11-29 05:36:31,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b30b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:31, skipping insertion in model container [2023-11-29 05:36:31,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:36:31" (1/1) ... [2023-11-29 05:36:31,604 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:36:32,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:36:32,490 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 05:36:32,505 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:36:32,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:36:32,575 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:36:32,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:36:32,781 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:32,781 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:32,781 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:32,781 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:32,781 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:36:32,789 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:36:32,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32 WrapperNode [2023-11-29 05:36:32,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:36:32,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:36:32,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:36:32,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:36:32,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,847 INFO L138 Inliner]: procedures = 505, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2023-11-29 05:36:32,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:36:32,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:36:32,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:36:32,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:36:32,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,862 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,881 INFO L175 MemorySlicer]: Split 7 memory accesses to 4 slices as follows [1, 1, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2023-11-29 05:36:32,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:36:32,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:36:32,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:36:32,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:36:32,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (1/1) ... [2023-11-29 05:36:32,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:36:32,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:36:32,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:36:32,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:36:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-29 05:36:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-29 05:36:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-29 05:36:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:36:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 05:36:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 05:36:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 05:36:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 05:36:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:36:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:36:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:36:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 05:36:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 05:36:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 05:36:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 05:36:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:36:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 05:36:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 05:36:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 05:36:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 05:36:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 05:36:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2023-11-29 05:36:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2023-11-29 05:36:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2023-11-29 05:36:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2023-11-29 05:36:33,173 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:36:33,175 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:36:33,450 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:36:33,490 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:36:33,490 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:36:33,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:33 BoogieIcfgContainer [2023-11-29 05:36:33,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:36:33,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:36:33,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:36:33,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:36:33,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:36:31" (1/3) ... [2023-11-29 05:36:33,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dd2203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:36:33, skipping insertion in model container [2023-11-29 05:36:33,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:36:32" (2/3) ... [2023-11-29 05:36:33,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dd2203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:36:33, skipping insertion in model container [2023-11-29 05:36:33,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:33" (3/3) ... [2023-11-29 05:36:33,501 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_64_bad.i [2023-11-29 05:36:33,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:36:33,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:36:33,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:36:33,571 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=PETRI_NET, 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;@ad38d63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:36:33,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:36:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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) [2023-11-29 05:36:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 05:36:33,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:33,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:36:33,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-29 05:36:33,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1799562210, now seen corresponding path program 1 times [2023-11-29 05:36:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:36:33,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605493055] [2023-11-29 05:36:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:33,606 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 [2023-11-29 05:36:33,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:36:33,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 05:36:33,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 05:36:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:36:33,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:36:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:36:34,138 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 05:36:34,139 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:36:34,140 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-29 05:36:34,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-29 05:36:34,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 05:36:34,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 05:36:34,348 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 05:36:34,352 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:36:34,369 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-11-29 05:36:34,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:36:34 BoogieIcfgContainer [2023-11-29 05:36:34,379 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:36:34,380 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:36:34,380 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:36:34,380 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:36:34,381 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:36:33" (3/4) ... [2023-11-29 05:36:34,383 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 05:36:34,384 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:36:34,386 INFO L158 Benchmark]: Toolchain (without parser) took 2847.54ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 63.6MB in the beginning and 63.4MB in the end (delta: 255.6kB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2023-11-29 05:36:34,386 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 67.1MB. Free memory is still 44.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:36:34,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1250.60ms. Allocated memory is still 86.0MB. Free memory was 63.2MB in the beginning and 45.5MB in the end (delta: 17.7MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2023-11-29 05:36:34,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.26ms. Allocated memory is still 86.0MB. Free memory was 45.5MB in the beginning and 42.3MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:36:34,388 INFO L158 Benchmark]: Boogie Preprocessor took 59.34ms. Allocated memory is still 86.0MB. Free memory was 42.3MB in the beginning and 38.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 05:36:34,389 INFO L158 Benchmark]: RCFGBuilder took 583.13ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 38.9MB in the beginning and 59.5MB in the end (delta: -20.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-11-29 05:36:34,390 INFO L158 Benchmark]: TraceAbstraction took 885.18ms. Allocated memory is still 104.9MB. Free memory was 58.5MB in the beginning and 63.9MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:36:34,390 INFO L158 Benchmark]: Witness Printer took 4.77ms. Allocated memory is still 104.9MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:36:34,393 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 67.1MB. Free memory is still 44.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1250.60ms. Allocated memory is still 86.0MB. Free memory was 63.2MB in the beginning and 45.5MB in the end (delta: 17.7MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.26ms. Allocated memory is still 86.0MB. Free memory was 45.5MB in the beginning and 42.3MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.34ms. Allocated memory is still 86.0MB. Free memory was 42.3MB in the beginning and 38.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 583.13ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 38.9MB in the beginning and 59.5MB in the end (delta: -20.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * TraceAbstraction took 885.18ms. Allocated memory is still 104.9MB. Free memory was 58.5MB in the beginning and 63.9MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.77ms. Allocated memory is still 104.9MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet100 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 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, overapproximation of large string literal at line 1569. 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)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_64_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [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_sub_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1579] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataVoidPtr={6:0}, dataVoidPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1579]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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=18occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 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 [2023-11-29 05:36:34,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d7d09e-e53f-4bc7-b8eb-306eec19a099/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample