./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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_bfeb61e5-f506-4269-9a24-0859ce85e843/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 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:06:57,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:06:57,419 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 06:06:57,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:06:57,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:06:57,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:06:57,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:06:57,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:06:57,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:06:57,450 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:06:57,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:06:57,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:06:57,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:06:57,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:06:57,453 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:06:57,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:06:57,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:06:57,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:06:57,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:06:57,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:06:57,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:06:57,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:06:57,458 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:06:57,458 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:06:57,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:06:57,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:06:57,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:06:57,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:06:57,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:06:57,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:06:57,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:06:57,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:06:57,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:06:57,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:06:57,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:06:57,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:06:57,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:06:57,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:06:57,463 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:06:57,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:06:57,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:06:57,464 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_bfeb61e5-f506-4269-9a24-0859ce85e843/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 [2023-11-29 06:06:57,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:06:57,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:06:57,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:06:57,748 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:06:57,748 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:06:57,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2023-11-29 06:07:00,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:07:00,826 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:07:00,827 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2023-11-29 06:07:00,853 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/data/6fee3ff70/7f030d3198be4695b2cb5e8eda1b8795/FLAG1b248af57 [2023-11-29 06:07:01,069 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/data/6fee3ff70/7f030d3198be4695b2cb5e8eda1b8795 [2023-11-29 06:07:01,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:07:01,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:07:01,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:07:01,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:07:01,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:07:01,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:07:01" (1/1) ... [2023-11-29 06:07:01,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ec38fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:01, skipping insertion in model container [2023-11-29 06:07:01,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:07:01" (1/1) ... [2023-11-29 06:07:01,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:07:01,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:07:01,950 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:07:02,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:07:02,226 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:02,226 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:02,226 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:02,227 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:02,227 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:02,232 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:07:02,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02 WrapperNode [2023-11-29 06:07:02,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:07:02,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:07:02,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:07:02,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:07:02,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,297 INFO L138 Inliner]: procedures = 500, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2023-11-29 06:07:02,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:07:02,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:07:02,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:07:02,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:07:02,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,342 INFO L175 MemorySlicer]: Split 8 memory accesses to 5 slices as follows [1, 1, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0, 0, 0]. The 4 writes are split as follows [0, 0, 1, 2, 1]. [2023-11-29 06:07:02,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:07:02,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:07:02,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:07:02,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:07:02,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (1/1) ... [2023-11-29 06:07:02,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:07:02,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:02,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:07:02,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:07:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-29 06:07:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-29 06:07:02,448 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-29 06:07:02,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:07:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-29 06:07:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-29 06:07:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-29 06:07:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-29 06:07:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-29 06:07:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:07:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:07:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:07:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:07:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 06:07:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:07:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:07:02,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:07:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:07:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 06:07:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:07:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:07:02,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:07:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:07:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 06:07:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:07:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:07:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:07:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:07:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 06:07:02,635 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:07:02,637 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:07:02,772 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:07:02,805 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:07:02,806 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:07:02,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:02 BoogieIcfgContainer [2023-11-29 06:07:02,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:07:02,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:07:02,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:07:02,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:07:02,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:07:01" (1/3) ... [2023-11-29 06:07:02,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d966a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:07:02, skipping insertion in model container [2023-11-29 06:07:02,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:02" (2/3) ... [2023-11-29 06:07:02,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d966a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:07:02, skipping insertion in model container [2023-11-29 06:07:02,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:02" (3/3) ... [2023-11-29 06:07:02,816 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2023-11-29 06:07:02,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:07:02,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 06:07:02,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:07:02,893 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;@67e12768, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:07:02,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 06:07:02,898 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 06:07:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 06:07:02,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:02,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:02,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-29 06:07:02,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1603048705, now seen corresponding path program 1 times [2023-11-29 06:07:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:02,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369167490] [2023-11-29 06:07:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:07:03,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:07:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:07:03,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:07:03,144 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:07:03,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-29 06:07:03,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-29 06:07:03,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:07:03,152 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 06:07:03,155 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:07:03,171 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet103 [2023-11-29 06:07:03,172 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst [2023-11-29 06:07:03,174 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 06:07:03,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:07:03 BoogieIcfgContainer [2023-11-29 06:07:03,182 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:07:03,183 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:07:03,183 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:07:03,183 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:07:03,184 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:02" (3/4) ... [2023-11-29 06:07:03,186 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 06:07:03,187 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:07:03,188 INFO L158 Benchmark]: Toolchain (without parser) took 2116.20ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 102.2MB in the beginning and 110.3MB in the end (delta: -8.0MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2023-11-29 06:07:03,188 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 144.7MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:07:03,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1160.94ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 102.2MB in the beginning and 154.3MB in the end (delta: -52.1MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2023-11-29 06:07:03,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.66ms. Allocated memory is still 201.3MB. Free memory was 154.3MB in the beginning and 151.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:07:03,190 INFO L158 Benchmark]: Boogie Preprocessor took 67.86ms. Allocated memory is still 201.3MB. Free memory was 151.2MB in the beginning and 148.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:07:03,191 INFO L158 Benchmark]: RCFGBuilder took 439.75ms. Allocated memory is still 201.3MB. Free memory was 148.0MB in the beginning and 131.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 06:07:03,192 INFO L158 Benchmark]: TraceAbstraction took 373.07ms. Allocated memory is still 201.3MB. Free memory was 130.2MB in the beginning and 110.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 06:07:03,192 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 201.3MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:07:03,195 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 144.7MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1160.94ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 102.2MB in the beginning and 154.3MB in the end (delta: -52.1MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.66ms. Allocated memory is still 201.3MB. Free memory was 154.3MB in the beginning and 151.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.86ms. Allocated memory is still 201.3MB. Free memory was 151.2MB in the beginning and 148.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.75ms. Allocated memory is still 201.3MB. Free memory was 148.0MB in the beginning and 131.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 373.07ms. Allocated memory is still 201.3MB. Free memory was 130.2MB in the beginning and 110.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 201.3MB. Free memory is still 110.3MB. 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~nondet103 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of large string literal at line 1575. 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); [L1575] 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) [L1575] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741832:1073741828}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_67_structType myStruct; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myStruct.structFirst = data [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_67b_badSink(myStruct) [L1581] EXPR myStruct.structFirst [L1581] int data = myStruct.structFirst; [L1583] 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, myStruct={6:0}] - UnprovableResult [Line: 1583]: 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: 0.3s, 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=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, 0.1s 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 06:07:03,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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_bfeb61e5-f506-4269-9a24-0859ce85e843/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 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:07:05,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:07:05,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-29 06:07:05,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:07:05,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:07:05,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-29 06:07:05,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:07:05,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:07:05,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:07:05,339 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:07:05,339 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:07:05,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:07:05,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:07:05,341 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:07:05,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:07:05,342 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:07:05,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:07:05,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:07:05,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:07:05,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:07:05,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:07:05,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:07:05,346 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:07:05,346 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 06:07:05,346 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:07:05,347 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 06:07:05,347 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:07:05,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:07:05,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:07:05,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:07:05,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:07:05,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:07:05,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:07:05,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:07:05,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:07:05,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:07:05,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:07:05,351 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 06:07:05,351 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 06:07:05,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:07:05,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:07:05,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:07:05,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:07:05,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:07:05,352 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 06:07:05,352 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_bfeb61e5-f506-4269-9a24-0859ce85e843/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 [2023-11-29 06:07:05,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:07:05,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:07:05,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:07:05,688 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:07:05,688 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:07:05,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2023-11-29 06:07:08,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:07:08,841 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:07:08,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2023-11-29 06:07:08,867 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/data/a2febb2fd/6edd5320dcbf47d6823ebc240b426b4d/FLAG85c5dd42c [2023-11-29 06:07:08,883 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/data/a2febb2fd/6edd5320dcbf47d6823ebc240b426b4d [2023-11-29 06:07:08,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:07:08,887 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:07:08,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:07:08,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:07:08,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:07:08,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:07:08" (1/1) ... [2023-11-29 06:07:08,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1f4d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:08, skipping insertion in model container [2023-11-29 06:07:08,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:07:08" (1/1) ... [2023-11-29 06:07:08,983 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:07:09,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:07:09,762 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:07:09,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:07:10,025 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:10,025 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:10,025 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:10,025 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:10,026 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:07:10,033 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:07:10,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10 WrapperNode [2023-11-29 06:07:10,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:07:10,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:07:10,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:07:10,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:07:10,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,093 INFO L138 Inliner]: procedures = 505, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2023-11-29 06:07:10,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:07:10,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:07:10,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:07:10,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:07:10,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,128 INFO L175 MemorySlicer]: Split 8 memory accesses to 5 slices as follows [1, 1, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0, 0, 0]. The 4 writes are split as follows [0, 0, 1, 1, 2]. [2023-11-29 06:07:10,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:07:10,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:07:10,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:07:10,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:07:10,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (1/1) ... [2023-11-29 06:07:10,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:07:10,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:10,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:07:10,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:07:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-29 06:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-29 06:07:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-29 06:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 06:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 06:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 06:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 06:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 06:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:07:10,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 06:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 06:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 06:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 06:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 06:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 06:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 06:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 06:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 06:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 06:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 06:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2023-11-29 06:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2023-11-29 06:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2023-11-29 06:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2023-11-29 06:07:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#4 [2023-11-29 06:07:10,417 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:07:10,419 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:07:10,601 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:07:10,642 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:07:10,642 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:07:10,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:10 BoogieIcfgContainer [2023-11-29 06:07:10,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:07:10,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:07:10,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:07:10,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:07:10,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:07:08" (1/3) ... [2023-11-29 06:07:10,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701244e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:07:10, skipping insertion in model container [2023-11-29 06:07:10,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:10" (2/3) ... [2023-11-29 06:07:10,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701244e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:07:10, skipping insertion in model container [2023-11-29 06:07:10,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:10" (3/3) ... [2023-11-29 06:07:10,651 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2023-11-29 06:07:10,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:07:10,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 06:07:10,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:07:10,732 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;@3af066c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:07:10,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 06:07:10,737 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 06:07:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 06:07:10,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:10,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:10,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-29 06:07:10,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1603048705, now seen corresponding path program 1 times [2023-11-29 06:07:10,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:07:10,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123758855] [2023-11-29 06:07:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:10,768 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 06:07:10,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:07:10,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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 06:07:10,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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 06:07:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:07:10,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:07:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:07:11,078 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 06:07:11,080 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:07:11,082 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-29 06:07:11,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-29 06:07:11,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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 06:07:11,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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 06:07:11,288 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 06:07:11,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:07:11,303 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet101 [2023-11-29 06:07:11,304 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst [2023-11-29 06:07:11,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 06:07:11,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:07:11 BoogieIcfgContainer [2023-11-29 06:07:11,312 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:07:11,313 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:07:11,313 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:07:11,313 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:07:11,314 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:10" (3/4) ... [2023-11-29 06:07:11,316 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 06:07:11,317 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:07:11,318 INFO L158 Benchmark]: Toolchain (without parser) took 2430.06ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 31.9MB in the beginning and 49.2MB in the end (delta: -17.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-11-29 06:07:11,318 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 65.0MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:07:11,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1144.56ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 31.7MB in the beginning and 67.1MB in the end (delta: -35.4MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2023-11-29 06:07:11,319 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.35ms. Allocated memory is still 96.5MB. Free memory was 67.1MB in the beginning and 64.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:07:11,320 INFO L158 Benchmark]: Boogie Preprocessor took 61.95ms. Allocated memory is still 96.5MB. Free memory was 64.0MB in the beginning and 60.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:07:11,321 INFO L158 Benchmark]: RCFGBuilder took 486.06ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 41.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 06:07:11,321 INFO L158 Benchmark]: TraceAbstraction took 666.95ms. Allocated memory is still 96.5MB. Free memory was 40.9MB in the beginning and 49.7MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:07:11,322 INFO L158 Benchmark]: Witness Printer took 3.86ms. Allocated memory is still 96.5MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:07:11,325 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 65.0MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1144.56ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 31.7MB in the beginning and 67.1MB in the end (delta: -35.4MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.35ms. Allocated memory is still 96.5MB. Free memory was 67.1MB in the beginning and 64.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.95ms. Allocated memory is still 96.5MB. Free memory was 64.0MB in the beginning and 60.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 486.06ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 41.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 666.95ms. Allocated memory is still 96.5MB. Free memory was 40.9MB in the beginning and 49.7MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.86ms. Allocated memory is still 96.5MB. Free memory is still 49.2MB. 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~nondet101 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #in~myStruct!structFirst - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~myStruct!structFirst has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of large string literal at line 1575. 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); [L1575] 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) [L1575] 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] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_67_structType myStruct; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myStruct.structFirst = data [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_67b_badSink(myStruct) [L1581] EXPR myStruct.structFirst [L1581] int data = myStruct.structFirst; [L1583] 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, myStruct={7:0}] - UnprovableResult [Line: 1583]: 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: 0.6s, 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=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, 0.1s 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 06:07:11,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeb61e5-f506-4269-9a24-0859ce85e843/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample