./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 38b53e6a 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_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/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_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:18:22,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:18:22,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:18:22,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:18:22,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:18:22,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:18:22,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:18:22,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:18:22,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:18:22,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:18:22,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:18:22,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:18:22,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:18:22,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:18:22,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:18:22,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:18:22,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:18:22,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:18:22,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:18:22,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:18:22,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:18:22,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:18:22,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:18:22,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:18:22,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:18:22,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:18:22,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:18:22,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:18:22,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:18:22,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:18:22,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:18:22,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:18:22,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:18:22,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:18:22,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:18:22,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:18:22,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:18:22,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:18:22,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:18:22,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:18:22,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:18:22,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:18:22,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:18:22,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:18:22,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:18:22,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:18:22,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:18:22,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:18:22,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:18:22,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:18:22,435 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:18:22,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:18:22,435 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:18:22,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:18:22,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:18:22,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:18:22,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:18:22,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:18:22,437 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:18:22,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:18:22,437 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:18:22,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:18:22,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:18:22,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:18:22,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:18:22,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:18:22,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:18:22,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:18:22,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:18:22,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:18:22,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:18:22,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:18:22,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:18:22,440 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:18:22,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:18:22,441 INFO L138 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_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 [2022-11-25 17:18:22,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:18:22,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:18:22,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:18:22,821 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:18:22,821 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:18:22,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2022-11-25 17:18:26,039 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:18:26,474 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:18:26,475 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2022-11-25 17:18:26,498 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/data/f02309346/61750dda7c4348e897af788537df7594/FLAGd779e480d [2022-11-25 17:18:26,519 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/data/f02309346/61750dda7c4348e897af788537df7594 [2022-11-25 17:18:26,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:18:26,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:18:26,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:18:26,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:18:26,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:18:26,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:18:26" (1/1) ... [2022-11-25 17:18:26,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ecd25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:26, skipping insertion in model container [2022-11-25 17:18:26,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:18:26" (1/1) ... [2022-11-25 17:18:26,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:18:26,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:18:27,031 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:18:27,837 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:18:27,844 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:18:27,847 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:18:27,850 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:18:27,852 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:18:27,884 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:18:27,887 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:18:27,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:18:27,904 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:18:27,930 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:18:27,982 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:18:27,985 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:18:27,986 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:18:27,989 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:18:27,990 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:18:27,997 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:18:27,999 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:18:28,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:18:28,115 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:18:28,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28 WrapperNode [2022-11-25 17:18:28,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:18:28,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:18:28,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:18:28,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:18:28,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,193 INFO L138 Inliner]: procedures = 501, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2022-11-25 17:18:28,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:18:28,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:18:28,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:18:28,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:18:28,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,233 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:18:28,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:18:28,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:18:28,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:18:28,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (1/1) ... [2022-11-25 17:18:28,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:18:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:28,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:18:28,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:18:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:18:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:18:28,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:18:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:18:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 17:18:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:18:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:18:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:18:28,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:18:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:18:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:18:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:18:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:18:28,635 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:18:28,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:18:28,840 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:18:28,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:18:28,848 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:18:28,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:28 BoogieIcfgContainer [2022-11-25 17:18:28,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:18:28,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:18:28,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:18:28,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:18:28,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:18:26" (1/3) ... [2022-11-25 17:18:28,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9ade2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:18:28, skipping insertion in model container [2022-11-25 17:18:28,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:28" (2/3) ... [2022-11-25 17:18:28,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9ade2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:18:28, skipping insertion in model container [2022-11-25 17:18:28,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:28" (3/3) ... [2022-11-25 17:18:28,863 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2022-11-25 17:18:28,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:18:28,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:18:28,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:18:28,964 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=LoopsAndPotentialCycles, 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;@8e54114, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:18:28,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:18:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:18:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:18:28,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:28,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:28,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:18:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-25 17:18:29,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:29,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802900114] [2022-11-25 17:18:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:29,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:18:29,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:18:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:18:29,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:18:29,303 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:18:29,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:18:29,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:18:29,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:18:29,315 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:18:29,321 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:18:29,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:18:29 BoogieIcfgContainer [2022-11-25 17:18:29,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:18:29,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:18:29,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:18:29,355 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:18:29,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:28" (3/4) ... [2022-11-25 17:18:29,361 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:18:29,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:18:29,362 INFO L158 Benchmark]: Toolchain (without parser) took 2836.88ms. Allocated memory is still 178.3MB. Free memory was 136.6MB in the beginning and 134.9MB in the end (delta: 1.7MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2022-11-25 17:18:29,363 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:18:29,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1585.46ms. Allocated memory is still 178.3MB. Free memory was 136.6MB in the beginning and 76.4MB in the end (delta: 60.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-25 17:18:29,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.42ms. Allocated memory is still 178.3MB. Free memory was 76.4MB in the beginning and 73.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:18:29,365 INFO L158 Benchmark]: Boogie Preprocessor took 44.80ms. Allocated memory is still 178.3MB. Free memory was 73.6MB in the beginning and 72.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:18:29,366 INFO L158 Benchmark]: RCFGBuilder took 611.49ms. Allocated memory is still 178.3MB. Free memory was 72.2MB in the beginning and 58.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:18:29,367 INFO L158 Benchmark]: TraceAbstraction took 500.76ms. Allocated memory is still 178.3MB. Free memory was 57.6MB in the beginning and 134.9MB in the end (delta: -77.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:18:29,368 INFO L158 Benchmark]: Witness Printer took 6.29ms. Allocated memory is still 178.3MB. Free memory was 134.9MB in the beginning and 134.9MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:18:29,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1585.46ms. Allocated memory is still 178.3MB. Free memory was 136.6MB in the beginning and 76.4MB in the end (delta: 60.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.42ms. Allocated memory is still 178.3MB. Free memory was 76.4MB in the beginning and 73.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.80ms. Allocated memory is still 178.3MB. Free memory was 73.6MB in the beginning and 72.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 611.49ms. Allocated memory is still 178.3MB. Free memory was 72.2MB in the beginning and 58.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 500.76ms. Allocated memory is still 178.3MB. Free memory was 57.6MB in the beginning and 134.9MB in the end (delta: -77.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.29ms. Allocated memory is still 178.3MB. Free memory was 134.9MB in the beginning and 134.9MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - 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. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [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 [\old(argc)=1073741831, argc=1073741831, argv={1073741829:1073741833}, argv={1073741829:1073741833}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, 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)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [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 [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myStruct={6:0}, unknown-#in~myStruct!structFirst-unknown=-2147483648] - 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 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 [2022-11-25 17:18:29,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/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_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:18:32,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:18:32,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:18:32,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:18:32,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:18:32,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:18:32,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:18:32,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:18:32,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:18:32,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:18:32,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:18:32,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:18:32,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:18:32,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:18:32,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:18:32,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:18:32,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:18:32,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:18:32,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:18:32,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:18:32,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:18:32,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:18:32,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:18:32,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:18:32,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:18:32,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:18:32,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:18:32,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:18:32,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:18:32,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:18:32,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:18:32,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:18:32,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:18:32,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:18:32,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:18:32,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:18:32,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:18:32,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:18:32,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:18:32,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:18:32,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:18:32,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 17:18:32,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:18:32,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:18:32,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:18:32,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:18:32,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:18:32,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:18:32,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:18:32,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:18:32,420 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:18:32,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:18:32,421 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:18:32,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:18:32,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:18:32,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:18:32,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:18:32,422 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:18:32,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:18:32,422 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:18:32,423 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:18:32,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:18:32,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:18:32,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:18:32,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:18:32,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:18:32,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:18:32,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:18:32,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:18:32,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:18:32,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:18:32,425 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:18:32,425 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:18:32,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:18:32,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:18:32,426 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:18:32,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:18:32,426 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:18:32,426 INFO L138 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_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 [2022-11-25 17:18:32,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:18:32,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:18:32,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:18:32,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:18:32,955 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:18:32,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2022-11-25 17:18:36,336 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:18:36,766 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:18:36,766 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2022-11-25 17:18:36,806 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/data/419cd7ef1/b9a98567f0f54d9d89d0e3c12a4c1a84/FLAG2ea7162ef [2022-11-25 17:18:36,833 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/data/419cd7ef1/b9a98567f0f54d9d89d0e3c12a4c1a84 [2022-11-25 17:18:36,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:18:36,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:18:36,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:18:36,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:18:36,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:18:36,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:18:36" (1/1) ... [2022-11-25 17:18:36,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad8b3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:36, skipping insertion in model container [2022-11-25 17:18:36,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:18:36" (1/1) ... [2022-11-25 17:18:36,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:18:36,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:18:37,464 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:18:38,001 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:18:38,007 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:18:38,009 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:18:38,012 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:18:38,013 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:18:38,042 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:18:38,051 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:18:38,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:18:38,072 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:18:38,095 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:18:38,165 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:18:38,167 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:18:38,169 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:18:38,171 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:18:38,178 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:18:38,183 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:18:38,186 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:18:38,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:18:38,309 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:18:38,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38 WrapperNode [2022-11-25 17:18:38,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:18:38,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:18:38,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:18:38,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:18:38,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,380 INFO L138 Inliner]: procedures = 506, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2022-11-25 17:18:38,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:18:38,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:18:38,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:18:38,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:18:38,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,410 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:18:38,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:18:38,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:18:38,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:18:38,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (1/1) ... [2022-11-25 17:18:38,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:18:38,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:38,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:18:38,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:18:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:18:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:18:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:18:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:18:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:18:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:18:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:18:38,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:18:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 17:18:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:18:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:18:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:18:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 17:18:38,699 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:18:38,702 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:18:38,963 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:18:38,975 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:18:38,976 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:18:38,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:38 BoogieIcfgContainer [2022-11-25 17:18:38,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:18:38,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:18:38,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:18:38,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:18:38,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:18:36" (1/3) ... [2022-11-25 17:18:38,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da09f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:18:38, skipping insertion in model container [2022-11-25 17:18:38,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:38" (2/3) ... [2022-11-25 17:18:38,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da09f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:18:38, skipping insertion in model container [2022-11-25 17:18:38,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:38" (3/3) ... [2022-11-25 17:18:38,998 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2022-11-25 17:18:39,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:18:39,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:18:39,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:18:39,092 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=LoopsAndPotentialCycles, 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;@adc7386, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:18:39,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:18:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:18:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:18:39,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:39,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:39,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:18:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:39,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-25 17:18:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:18:39,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321963777] [2022-11-25 17:18:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:39,139 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 [2022-11-25 17:18:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:18:39,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 17:18:39,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 17:18:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:18:39,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:18:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:18:39,510 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 17:18:39,512 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:18:39,514 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:18:39,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:18:39,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 17:18:39,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 17:18:39,732 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:18:39,736 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:18:39,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:18:39 BoogieIcfgContainer [2022-11-25 17:18:39,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:18:39,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:18:39,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:18:39,787 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:18:39,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:38" (3/4) ... [2022-11-25 17:18:39,792 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:18:39,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:18:39,795 INFO L158 Benchmark]: Toolchain (without parser) took 2955.87ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 47.8MB in the beginning and 56.7MB in the end (delta: -8.9MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2022-11-25 17:18:39,795 INFO L158 Benchmark]: CDTParser took 0.75ms. Allocated memory is still 73.4MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:18:39,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1469.25ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 47.7MB in the beginning and 46.0MB in the end (delta: 1.7MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-25 17:18:39,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.24ms. Allocated memory is still 96.5MB. Free memory was 46.0MB in the beginning and 68.5MB in the end (delta: -22.5MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-11-25 17:18:39,802 INFO L158 Benchmark]: Boogie Preprocessor took 34.18ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:18:39,804 INFO L158 Benchmark]: RCFGBuilder took 563.79ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 50.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:18:39,805 INFO L158 Benchmark]: TraceAbstraction took 802.04ms. Allocated memory is still 96.5MB. Free memory was 50.1MB in the beginning and 56.7MB in the end (delta: -6.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:18:39,806 INFO L158 Benchmark]: Witness Printer took 6.71ms. Allocated memory is still 96.5MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:18:39,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75ms. Allocated memory is still 73.4MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1469.25ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 47.7MB in the beginning and 46.0MB in the end (delta: 1.7MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.24ms. Allocated memory is still 96.5MB. Free memory was 46.0MB in the beginning and 68.5MB in the end (delta: -22.5MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.18ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 563.79ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 50.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 802.04ms. Allocated memory is still 96.5MB. Free memory was 50.1MB in the beginning and 56.7MB in the end (delta: -6.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.71ms. Allocated memory is still 96.5MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - 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. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [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 [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, 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)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [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 [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myStruct={7:0}, unknown-#in~myStruct!structFirst-unknown=-2147483648] - 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 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 [2022-11-25 17:18:39,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d785cb2c-233b-4298-a5e1-7433ca9a118c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample