./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_07_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_07_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd8f7b9cbcabfb13547277a41f369f2496b842cfb5d3e1a1eacdab3a7b2fa9c8 --- 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-2329fc7 [2022-12-14 11:26:50,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:26:50,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:26:50,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:26:50,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:26:50,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:26:50,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:26:50,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:26:50,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:26:50,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:26:50,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:26:50,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:26:50,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:26:50,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:26:50,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:26:50,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:26:50,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:26:50,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:26:50,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:26:50,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:26:50,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:26:50,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:26:50,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:26:50,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:26:50,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:26:50,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:26:50,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:26:50,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:26:50,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:26:50,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:26:50,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:26:50,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:26:50,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:26:50,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:26:50,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:26:50,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:26:50,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:26:50,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:26:50,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:26:50,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:26:50,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:26:50,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 11:26:50,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:26:50,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:26:50,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:26:50,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:26:50,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:26:50,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:26:50,444 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:26:50,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:26:50,444 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:26:50,444 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:26:50,445 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:26:50,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:26:50,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:26:50,445 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:26:50,445 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:26:50,445 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:26:50,445 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:26:50,445 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:26:50,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:26:50,446 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:26:50,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:26:50,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:26:50,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:26:50,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:26:50,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:26:50,447 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:26:50,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:26:50,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:26:50,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:26:50,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:26:50,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:26:50,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:26:50,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:26:50,448 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:26:50,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:26:50,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:26:50,448 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:26:50,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:26:50,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:26:50,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:26:50,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8f7b9cbcabfb13547277a41f369f2496b842cfb5d3e1a1eacdab3a7b2fa9c8 [2022-12-14 11:26:50,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:26:50,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:26:50,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:26:50,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:26:50,674 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:26:50,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_07_bad.i [2022-12-14 11:26:53,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:26:53,453 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:26:53,454 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_07_bad.i [2022-12-14 11:26:53,467 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/data/ccdf78660/9d345b3c515948329d987d470ec94f1c/FLAG9dd35a22c [2022-12-14 11:26:53,478 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/data/ccdf78660/9d345b3c515948329d987d470ec94f1c [2022-12-14 11:26:53,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:26:53,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:26:53,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:26:53,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:26:53,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:26:53,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:26:53" (1/1) ... [2022-12-14 11:26:53,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1784880e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:53, skipping insertion in model container [2022-12-14 11:26:53,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:26:53" (1/1) ... [2022-12-14 11:26:53,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:26:53,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:26:53,804 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:26:54,128 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:26:54,133 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:26:54,135 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:26:54,137 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:26:54,138 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:26:54,155 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:26:54,160 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:26:54,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:26:54,170 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:26:54,187 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:26:54,232 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:26:54,233 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:26:54,234 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:26:54,237 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:26:54,238 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:26:54,242 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:26:54,244 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:26:54,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:26:54,350 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:26:54,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54 WrapperNode [2022-12-14 11:26:54,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:26:54,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:26:54,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:26:54,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:26:54,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,400 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-12-14 11:26:54,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:26:54,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:26:54,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:26:54,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:26:54,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,420 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:26:54,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:26:54,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:26:54,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:26:54,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (1/1) ... [2022-12-14 11:26:54,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:26:54,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:26:54,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:26:54,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:26:54,489 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 11:26:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 11:26:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 11:26:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:26:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 11:26:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:26:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:26:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:26:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:26:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 11:26:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:26:54,600 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:26:54,601 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:26:54,695 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:26:54,715 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:26:54,716 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:26:54,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:26:54 BoogieIcfgContainer [2022-12-14 11:26:54,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:26:54,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:26:54,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:26:54,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:26:54,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:26:53" (1/3) ... [2022-12-14 11:26:54,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f81bf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:26:54, skipping insertion in model container [2022-12-14 11:26:54,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:26:54" (2/3) ... [2022-12-14 11:26:54,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f81bf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:26:54, skipping insertion in model container [2022-12-14 11:26:54,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:26:54" (3/3) ... [2022-12-14 11:26:54,725 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_07_bad.i [2022-12-14 11:26:54,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:26:54,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 11:26:54,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:26:54,779 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@1253f030, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:26:54,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 11:26:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-12-14 11:26:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:26:54,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:26:54,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:26:54,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:26:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:26:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-12-14 11:26:54,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:26:54,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608138659] [2022-12-14 11:26:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:26:54,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:26:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:26:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:26:54,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:26:54,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608138659] [2022-12-14 11:26:54,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608138659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:26:54,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:26:54,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:26:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647370781] [2022-12-14 11:26:54,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:26:54,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:26:54,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:26:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:26:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:26:54,980 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:26:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:26:55,009 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 11:26:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:26:55,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2022-12-14 11:26:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:26:55,015 INFO L225 Difference]: With dead ends: 29 [2022-12-14 11:26:55,015 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 11:26:55,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:26:55,019 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:26:55,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:26:55,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 11:26:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 11:26:55,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:26:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 11:26:55,045 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-12-14 11:26:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:26:55,047 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 11:26:55,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:26:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 11:26:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 11:26:55,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:26:55,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:26:55,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:26:55,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:26:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:26:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-12-14 11:26:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:26:55,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421350046] [2022-12-14 11:26:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:26:55,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:26:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:26:55,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:26:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:26:55,120 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:26:55,120 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:26:55,122 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 11:26:55,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 11:26:55,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:26:55,128 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 11:26:55,131 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:26:55,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:26:55 BoogieIcfgContainer [2022-12-14 11:26:55,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:26:55,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:26:55,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:26:55,148 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:26:55,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:26:54" (3/4) ... [2022-12-14 11:26:55,151 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:26:55,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:26:55,152 INFO L158 Benchmark]: Toolchain (without parser) took 1670.81ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 102.1MB in the beginning and 83.6MB in the end (delta: 18.4MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2022-12-14 11:26:55,152 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:26:55,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 869.13ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 102.1MB in the beginning and 133.9MB in the end (delta: -31.9MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2022-12-14 11:26:55,153 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.97ms. Allocated memory is still 172.0MB. Free memory was 133.9MB in the beginning and 131.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:26:55,153 INFO L158 Benchmark]: Boogie Preprocessor took 22.86ms. Allocated memory is still 172.0MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:26:55,153 INFO L158 Benchmark]: RCFGBuilder took 293.10ms. Allocated memory is still 172.0MB. Free memory was 129.8MB in the beginning and 115.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 11:26:55,154 INFO L158 Benchmark]: TraceAbstraction took 428.21ms. Allocated memory is still 172.0MB. Free memory was 115.1MB in the beginning and 84.7MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-14 11:26:55,154 INFO L158 Benchmark]: Witness Printer took 3.07ms. Allocated memory is still 172.0MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:26:55,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 869.13ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 102.1MB in the beginning and 133.9MB in the end (delta: -31.9MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.97ms. Allocated memory is still 172.0MB. Free memory was 133.9MB in the beginning and 131.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.86ms. Allocated memory is still 172.0MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.10ms. Allocated memory is still 172.0MB. Free memory was 129.8MB in the beginning and 115.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 428.21ms. Allocated memory is still 172.0MB. Free memory was 115.1MB in the beginning and 84.7MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 3.07ms. Allocated memory is still 172.0MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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); [L1548] static int staticFive = 5; [L1578] 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}, staticFive=5] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1579] CALL CWE191_Integer_Underflow__int_fgets_sub_07_bad() [L1551] int data; [L1552] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1553] COND TRUE staticFive==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; 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, staticFive=5] [L1567] COND TRUE staticFive==5 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, staticFive=5] [L1570] 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, staticFive=5] - UnprovableResult [Line: 1570]: 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-12-14 11:26:55,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_07_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd8f7b9cbcabfb13547277a41f369f2496b842cfb5d3e1a1eacdab3a7b2fa9c8 --- 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-2329fc7 [2022-12-14 11:26:56,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:26:56,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:26:56,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:26:56,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:26:56,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:26:56,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:26:56,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:26:56,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:26:56,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:26:56,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:26:56,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:26:56,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:26:56,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:26:56,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:26:56,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:26:56,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:26:56,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:26:56,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:26:56,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:26:56,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:26:56,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:26:56,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:26:56,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:26:56,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:26:56,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:26:56,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:26:56,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:26:56,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:26:56,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:26:56,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:26:56,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:26:56,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:26:56,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:26:56,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:26:56,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:26:56,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:26:56,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:26:56,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:26:56,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:26:56,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:26:56,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 11:26:56,928 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:26:56,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:26:56,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:26:56,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:26:56,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:26:56,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:26:56,930 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:26:56,930 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:26:56,930 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:26:56,930 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:26:56,930 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:26:56,930 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:26:56,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:26:56,931 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:26:56,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:26:56,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:26:56,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:26:56,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:26:56,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:26:56,932 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:26:56,932 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:26:56,932 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:26:56,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:26:56,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:26:56,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:26:56,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:26:56,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:26:56,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:26:56,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:26:56,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:26:56,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:26:56,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:26:56,933 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:26:56,933 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:26:56,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:26:56,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:26:56,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:26:56,934 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8f7b9cbcabfb13547277a41f369f2496b842cfb5d3e1a1eacdab3a7b2fa9c8 [2022-12-14 11:26:57,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:26:57,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:26:57,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:26:57,169 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:26:57,169 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:26:57,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_07_bad.i [2022-12-14 11:26:59,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:26:59,955 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:26:59,956 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_07_bad.i [2022-12-14 11:26:59,977 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/data/7ed1a78a5/2189a4a25f3e497eb8b4d55f06875740/FLAG2aa4eba28 [2022-12-14 11:26:59,991 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/data/7ed1a78a5/2189a4a25f3e497eb8b4d55f06875740 [2022-12-14 11:26:59,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:26:59,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:26:59,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:26:59,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:27:00,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:27:00,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:26:59" (1/1) ... [2022-12-14 11:27:00,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de39ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00, skipping insertion in model container [2022-12-14 11:27:00,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:26:59" (1/1) ... [2022-12-14 11:27:00,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:27:00,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:27:00,301 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:27:00,551 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:27:00,555 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:27:00,556 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:27:00,558 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:27:00,558 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:27:00,572 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:27:00,576 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:27:00,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:27:00,587 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:27:00,602 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:27:00,642 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:27:00,643 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:27:00,644 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:27:00,645 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:27:00,646 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:27:00,649 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:27:00,650 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:27:00,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:27:00,746 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:27:00,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00 WrapperNode [2022-12-14 11:27:00,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:27:00,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:27:00,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:27:00,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:27:00,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,786 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-14 11:27:00,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:27:00,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:27:00,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:27:00,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:27:00,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,803 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:27:00,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:27:00,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:27:00,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:27:00,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (1/1) ... [2022-12-14 11:27:00,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:27:00,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:27:00,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:27:00,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:27:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 11:27:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 11:27:00,868 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 11:27:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:27:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 11:27:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:27:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:27:00,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:27:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:27:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 11:27:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 11:27:00,991 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:27:00,993 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:27:01,114 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:27:01,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:27:01,121 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:27:01,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:27:01 BoogieIcfgContainer [2022-12-14 11:27:01,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:27:01,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:27:01,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:27:01,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:27:01,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:26:59" (1/3) ... [2022-12-14 11:27:01,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2d12cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:27:01, skipping insertion in model container [2022-12-14 11:27:01,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:00" (2/3) ... [2022-12-14 11:27:01,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2d12cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:27:01, skipping insertion in model container [2022-12-14 11:27:01,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:27:01" (3/3) ... [2022-12-14 11:27:01,131 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_07_bad.i [2022-12-14 11:27:01,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:27:01,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 11:27:01,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:27:01,188 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@74dbdd6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:27:01,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 11:27:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-12-14 11:27:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:27:01,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:27:01,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:27:01,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:27:01,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:27:01,205 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-14 11:27:01,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:27:01,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433710171] [2022-12-14 11:27:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:27:01,219 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 [2022-12-14 11:27:01,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:27:01,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:27:01,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:27:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:27:01,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:27:01,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:27:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:27:01,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:27:01,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:27:01,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433710171] [2022-12-14 11:27:01,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433710171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:27:01,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:27:01,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:27:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570159408] [2022-12-14 11:27:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:27:01,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:27:01,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:27:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:27:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:27:01,440 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:27:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:27:01,469 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-12-14 11:27:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:27:01,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 11:27:01,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:27:01,478 INFO L225 Difference]: With dead ends: 39 [2022-12-14 11:27:01,478 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 11:27:01,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:27:01,485 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:27:01,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:27:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 11:27:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 11:27:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:27:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 11:27:01,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-14 11:27:01,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:27:01,521 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 11:27:01,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:27:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 11:27:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:27:01,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:27:01,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:27:01,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:27:01,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:27:01,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:27:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:27:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-14 11:27:01,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:27:01,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364314823] [2022-12-14 11:27:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:27:01,726 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 [2022-12-14 11:27:01,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:27:01,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:27:01,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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 (3)] Waiting until timeout for monitored process [2022-12-14 11:27:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:27:01,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:27:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:27:01,871 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 11:27:01,872 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:27:01,873 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 11:27:01,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 11:27:01,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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 (3)] Ended with exit code 0 [2022-12-14 11:27:02,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:27:02,087 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 11:27:02,097 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:27:02,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:27:02 BoogieIcfgContainer [2022-12-14 11:27:02,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:27:02,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:27:02,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:27:02,178 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:27:02,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:27:01" (3/4) ... [2022-12-14 11:27:02,187 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:27:02,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:27:02,189 INFO L158 Benchmark]: Toolchain (without parser) took 2193.03ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 36.1MB in the beginning and 44.4MB in the end (delta: -8.3MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-12-14 11:27:02,190 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory is still 29.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:27:02,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.72ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 35.9MB in the beginning and 43.1MB in the end (delta: -7.2MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2022-12-14 11:27:02,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.84ms. Allocated memory is still 73.4MB. Free memory was 43.1MB in the beginning and 40.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:27:02,194 INFO L158 Benchmark]: Boogie Preprocessor took 20.11ms. Allocated memory is still 73.4MB. Free memory was 40.0MB in the beginning and 38.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:27:02,195 INFO L158 Benchmark]: RCFGBuilder took 315.57ms. Allocated memory is still 73.4MB. Free memory was 37.9MB in the beginning and 41.2MB in the end (delta: -3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 11:27:02,196 INFO L158 Benchmark]: TraceAbstraction took 1050.78ms. Allocated memory is still 73.4MB. Free memory was 40.5MB in the beginning and 44.8MB in the end (delta: -4.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2022-12-14 11:27:02,197 INFO L158 Benchmark]: Witness Printer took 10.23ms. Allocated memory is still 73.4MB. Free memory was 44.8MB in the beginning and 44.4MB in the end (delta: 353.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:27:02,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory is still 29.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.72ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 35.9MB in the beginning and 43.1MB in the end (delta: -7.2MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.84ms. Allocated memory is still 73.4MB. Free memory was 43.1MB in the beginning and 40.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.11ms. Allocated memory is still 73.4MB. Free memory was 40.0MB in the beginning and 38.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.57ms. Allocated memory is still 73.4MB. Free memory was 37.9MB in the beginning and 41.2MB in the end (delta: -3.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1050.78ms. Allocated memory is still 73.4MB. Free memory was 40.5MB in the beginning and 44.8MB in the end (delta: -4.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Witness Printer took 10.23ms. Allocated memory is still 73.4MB. Free memory was 44.8MB in the beginning and 44.4MB in the end (delta: 353.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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); [L1548] static int staticFive = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1578] 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}, staticFive=5] [L1414] COND TRUE line != ((void *)0) [L1578] 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, staticFive=5] [L1579] CALL CWE191_Integer_Underflow__int_fgets_sub_07_bad() [L1551] int data; [L1552] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1553] COND TRUE staticFive==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; 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, staticFive=5] [L1567] COND TRUE staticFive==5 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, staticFive=5] [L1570] 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, staticFive=5] - UnprovableResult [Line: 1570]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-12-14 11:27:02,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9f7a706-0de9-441c-aa4f-0d8f13c30b74/bin/utaipan-gh47qXpMRh/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