./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_05_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_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_05_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 b8142922a8001a921becd6027012df2e90a59571fee7e1d2176d44a6fe229b2b --- 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 04:51:06,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:51:06,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:51:06,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:51:06,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:51:06,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:51:06,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:51:06,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:51:06,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:51:06,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:51:06,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:51:06,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:51:06,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:51:06,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:51:06,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:51:06,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:51:06,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:51:06,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:51:06,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:51:06,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:51:06,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:51:06,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:51:06,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:51:06,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:51:06,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:51:06,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:51:06,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:51:06,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:51:06,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:51:06,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:51:06,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:51:06,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:51:06,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:51:06,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:51:06,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:51:06,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:51:06,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:51:06,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:51:06,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:51:06,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:51:06,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:51:06,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 04:51:06,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:51:06,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:51:06,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:51:06,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:51:06,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:51:06,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:51:06,650 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:51:06,650 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:51:06,650 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:51:06,650 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:51:06,650 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:51:06,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:51:06,651 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:51:06,651 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:51:06,651 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:51:06,651 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:51:06,651 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:51:06,652 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:51:06,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:51:06,652 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 04:51:06,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:51:06,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:51:06,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:51:06,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:51:06,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:51:06,653 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 04:51:06,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:51:06,654 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:51:06,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:51:06,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:51:06,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:51:06,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:51:06,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:51:06,655 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:51:06,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:51:06,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:51:06,655 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:51:06,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:51:06,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:51:06,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:51:06,656 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_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8142922a8001a921becd6027012df2e90a59571fee7e1d2176d44a6fe229b2b [2022-12-14 04:51:06,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:51:06,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:51:06,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:51:06,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:51:06,876 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:51:06,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_05_bad.i [2022-12-14 04:51:09,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:51:09,658 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:51:09,659 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_05_bad.i [2022-12-14 04:51:09,671 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/data/d341668be/a00e473e3d9f4d9d978a2b7cd1aff775/FLAGc3f807791 [2022-12-14 04:51:09,982 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/data/d341668be/a00e473e3d9f4d9d978a2b7cd1aff775 [2022-12-14 04:51:09,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:51:09,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:51:09,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:51:09,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:51:09,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:51:09,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:51:09" (1/1) ... [2022-12-14 04:51:09,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17126b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:09, skipping insertion in model container [2022-12-14 04:51:09,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:51:09" (1/1) ... [2022-12-14 04:51:09,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:51:10,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:51:10,243 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 04:51:10,529 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:51:10,533 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 04:51:10,534 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 04:51:10,536 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 04:51:10,536 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 04:51:10,554 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 04:51:10,558 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 04:51:10,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:51:10,566 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:51:10,579 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 04:51:10,608 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:51:10,609 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 04:51:10,610 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 04:51:10,612 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 04:51:10,612 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 04:51:10,615 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 04:51:10,616 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 04:51:10,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:51:10,710 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:51:10,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10 WrapperNode [2022-12-14 04:51:10,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:51:10,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:51:10,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:51:10,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:51:10,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,754 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-12-14 04:51:10,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:51:10,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:51:10,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:51:10,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:51:10,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,770 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:51:10,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:51:10,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:51:10,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:51:10,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (1/1) ... [2022-12-14 04:51:10,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:51:10,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:51:10,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:51:10,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:51:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 04:51:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 04:51:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 04:51:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:51:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 04:51:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:51:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:51:10,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:51:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:51:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 04:51:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:51:10,933 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:51:10,935 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:51:11,023 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:51:11,051 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:51:11,051 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 04:51:11,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:11 BoogieIcfgContainer [2022-12-14 04:51:11,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:51:11,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:51:11,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:51:11,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:51:11,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:51:09" (1/3) ... [2022-12-14 04:51:11,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1a33c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:51:11, skipping insertion in model container [2022-12-14 04:51:11,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:10" (2/3) ... [2022-12-14 04:51:11,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1a33c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:51:11, skipping insertion in model container [2022-12-14 04:51:11,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:11" (3/3) ... [2022-12-14 04:51:11,061 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_05_bad.i [2022-12-14 04:51:11,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:51:11,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 04:51:11,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:51:11,114 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;@24a2ee19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:51:11,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 04:51:11,117 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 04:51:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 04:51:11,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:51:11,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:51:11,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 04:51:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:51:11,126 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-12-14 04:51:11,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:51:11,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399871255] [2022-12-14 04:51:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:11,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:51:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:51:11,339 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 04:51:11,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:51:11,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399871255] [2022-12-14 04:51:11,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399871255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:51:11,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:51:11,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:51:11,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591049953] [2022-12-14 04:51:11,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:51:11,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:51:11,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:51:11,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:51:11,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:51:11,378 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 04:51:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:51:11,414 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 04:51:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:51:11,416 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 04:51:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:51:11,422 INFO L225 Difference]: With dead ends: 29 [2022-12-14 04:51:11,422 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 04:51:11,425 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 04:51:11,428 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 04:51:11,430 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 04:51:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 04:51:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 04:51:11,455 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 04:51:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 04:51:11,457 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-12-14 04:51:11,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:51:11,458 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 04:51:11,458 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 04:51:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 04:51:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 04:51:11,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:51:11,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:51:11,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:51:11,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 04:51:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:51:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-12-14 04:51:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:51:11,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185807118] [2022-12-14 04:51:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:11,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:51:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:51:11,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:51:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:51:11,515 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 04:51:11,515 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:51:11,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 04:51:11,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 04:51:11,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:51:11,521 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 04:51:11,524 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 04:51:11,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:51:11 BoogieIcfgContainer [2022-12-14 04:51:11,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 04:51:11,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 04:51:11,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 04:51:11,541 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 04:51:11,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:11" (3/4) ... [2022-12-14 04:51:11,543 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 04:51:11,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 04:51:11,544 INFO L158 Benchmark]: Toolchain (without parser) took 1558.88ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 97.0MB in the beginning and 110.4MB in the end (delta: -13.5MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-12-14 04:51:11,544 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 132.1MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:51:11,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 725.45ms. Allocated memory is still 132.1MB. Free memory was 96.5MB in the beginning and 86.3MB in the end (delta: 10.3MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2022-12-14 04:51:11,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.10ms. Allocated memory is still 132.1MB. Free memory was 86.3MB in the beginning and 83.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:51:11,545 INFO L158 Benchmark]: Boogie Preprocessor took 17.07ms. Allocated memory is still 132.1MB. Free memory was 83.0MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:51:11,546 INFO L158 Benchmark]: RCFGBuilder took 280.95ms. Allocated memory is still 132.1MB. Free memory was 81.5MB in the beginning and 66.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 04:51:11,546 INFO L158 Benchmark]: TraceAbstraction took 484.29ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 66.2MB in the beginning and 111.3MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:51:11,546 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 159.4MB. Free memory was 111.3MB in the beginning and 110.4MB in the end (delta: 873.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:51:11,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 132.1MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 725.45ms. Allocated memory is still 132.1MB. Free memory was 96.5MB in the beginning and 86.3MB in the end (delta: 10.3MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.10ms. Allocated memory is still 132.1MB. Free memory was 86.3MB in the beginning and 83.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.07ms. Allocated memory is still 132.1MB. Free memory was 83.0MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 280.95ms. Allocated memory is still 132.1MB. Free memory was 81.5MB in the beginning and 66.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 484.29ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 66.2MB in the beginning and 111.3MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 159.4MB. Free memory was 111.3MB in the beginning and 110.4MB in the end (delta: 873.4kB). 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: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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 staticTrue = 1; [L1549] static int staticFalse = 0; [L1580] 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}, staticFalse=0, staticTrue=1] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, argv={1073741828:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_predec_05_bad() [L1552] int data; [L1553] 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, staticFalse=0, staticTrue=1] [L1554] COND TRUE \read(staticTrue) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] 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, staticFalse=0, staticTrue=1] [L1568] COND TRUE \read(staticTrue) 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, staticFalse=0, staticTrue=1] [L1571] --data 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, staticFalse=0, staticTrue=1] - UnprovableResult [Line: 1571]: 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 04:51:11,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_05_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 b8142922a8001a921becd6027012df2e90a59571fee7e1d2176d44a6fe229b2b --- 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 04:51:13,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:51:13,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:51:13,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:51:13,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:51:13,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:51:13,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:51:13,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:51:13,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:51:13,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:51:13,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:51:13,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:51:13,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:51:13,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:51:13,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:51:13,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:51:13,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:51:13,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:51:13,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:51:13,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:51:13,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:51:13,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:51:13,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:51:13,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:51:13,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:51:13,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:51:13,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:51:13,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:51:13,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:51:13,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:51:13,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:51:13,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:51:13,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:51:13,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:51:13,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:51:13,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:51:13,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:51:13,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:51:13,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:51:13,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:51:13,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:51:13,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 04:51:13,191 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:51:13,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:51:13,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:51:13,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:51:13,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:51:13,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:51:13,192 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:51:13,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:51:13,192 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:51:13,193 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:51:13,193 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:51:13,193 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:51:13,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:51:13,193 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 04:51:13,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:51:13,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:51:13,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:51:13,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:51:13,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 04:51:13,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:51:13,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:51:13,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:51:13,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:51:13,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:51:13,196 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 04:51:13,196 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 04:51:13,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:51:13,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:51:13,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 04:51:13,196 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_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8142922a8001a921becd6027012df2e90a59571fee7e1d2176d44a6fe229b2b [2022-12-14 04:51:13,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:51:13,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:51:13,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:51:13,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:51:13,441 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:51:13,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_05_bad.i [2022-12-14 04:51:16,080 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:51:16,294 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:51:16,295 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_05_bad.i [2022-12-14 04:51:16,308 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/data/8d8712c5a/55f78462f62e40ee882694d9fe29907e/FLAG88ad2005b [2022-12-14 04:51:16,320 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/data/8d8712c5a/55f78462f62e40ee882694d9fe29907e [2022-12-14 04:51:16,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:51:16,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:51:16,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:51:16,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:51:16,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:51:16,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:51:16" (1/1) ... [2022-12-14 04:51:16,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6e694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:16, skipping insertion in model container [2022-12-14 04:51:16,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:51:16" (1/1) ... [2022-12-14 04:51:16,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:51:16,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:51:16,638 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 04:51:17,008 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:51:17,013 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 04:51:17,014 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 04:51:17,016 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 04:51:17,017 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 04:51:17,037 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 04:51:17,041 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 04:51:17,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:51:17,056 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:51:17,075 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 04:51:17,110 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:51:17,112 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 04:51:17,112 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 04:51:17,114 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 04:51:17,114 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 04:51:17,117 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 04:51:17,118 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 04:51:17,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:51:17,204 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:51:17,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17 WrapperNode [2022-12-14 04:51:17,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:51:17,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:51:17,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:51:17,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:51:17,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,241 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-12-14 04:51:17,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:51:17,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:51:17,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:51:17,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:51:17,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:51:17,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:51:17,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:51:17,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:51:17,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (1/1) ... [2022-12-14 04:51:17,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:51:17,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:51:17,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:51:17,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:51:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 04:51:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 04:51:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 04:51:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:51:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 04:51:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:51:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:51:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:51:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:51:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 04:51:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 04:51:17,441 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:51:17,442 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:51:17,557 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:51:17,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:51:17,562 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 04:51:17,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:17 BoogieIcfgContainer [2022-12-14 04:51:17,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:51:17,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:51:17,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:51:17,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:51:17,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:51:16" (1/3) ... [2022-12-14 04:51:17,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf30f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:51:17, skipping insertion in model container [2022-12-14 04:51:17,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:51:17" (2/3) ... [2022-12-14 04:51:17,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf30f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:51:17, skipping insertion in model container [2022-12-14 04:51:17,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:17" (3/3) ... [2022-12-14 04:51:17,571 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_05_bad.i [2022-12-14 04:51:17,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:51:17,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 04:51:17,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:51:17,631 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;@64724d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:51:17,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 04:51:17,635 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 04:51:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 04:51:17,643 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:51:17,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:51:17,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 04:51:17,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:51:17,649 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-14 04:51:17,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:51:17,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081282545] [2022-12-14 04:51:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:17,662 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 04:51:17,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:51:17,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 04:51:17,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 04:51:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:51:17,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:51:17,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:51:17,817 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 04:51:17,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:51:17,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:51:17,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081282545] [2022-12-14 04:51:17,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081282545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:51:17,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:51:17,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:51:17,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044494453] [2022-12-14 04:51:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:51:17,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:51:17,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:51:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:51:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:51:17,852 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 04:51:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:51:17,875 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-12-14 04:51:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:51:17,877 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 04:51:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:51:17,884 INFO L225 Difference]: With dead ends: 39 [2022-12-14 04:51:17,884 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 04:51:17,886 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 04:51:17,888 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 04:51:17,888 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 04:51:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 04:51:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 04:51:17,912 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 04:51:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 04:51:17,914 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-14 04:51:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:51:17,915 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 04:51:17,915 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 04:51:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 04:51:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 04:51:17,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:51:17,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:51:17,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 04:51:18,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 04:51:18,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 04:51:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:51:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-14 04:51:18,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:51:18,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016187663] [2022-12-14 04:51:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:18,123 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 04:51:18,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:51:18,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 04:51:18,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 04:51:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:51:18,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:51:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:51:18,346 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 04:51:18,346 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:51:18,348 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 04:51:18,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 04:51:18,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 04:51:18,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/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 04:51:18,565 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 04:51:18,577 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 04:51:18,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:51:18 BoogieIcfgContainer [2022-12-14 04:51:18,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 04:51:18,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 04:51:18,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 04:51:18,616 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 04:51:18,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:51:17" (3/4) ... [2022-12-14 04:51:18,619 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 04:51:18,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 04:51:18,619 INFO L158 Benchmark]: Toolchain (without parser) took 2296.26ms. Allocated memory is still 73.4MB. Free memory was 48.5MB in the beginning and 27.4MB in the end (delta: 21.2MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2022-12-14 04:51:18,620 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:51:18,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 880.94ms. Allocated memory is still 73.4MB. Free memory was 48.3MB in the beginning and 40.7MB in the end (delta: 7.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-12-14 04:51:18,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.39ms. Allocated memory is still 73.4MB. Free memory was 40.7MB in the beginning and 37.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:51:18,621 INFO L158 Benchmark]: Boogie Preprocessor took 19.34ms. Allocated memory is still 73.4MB. Free memory was 37.6MB in the beginning and 35.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 04:51:18,621 INFO L158 Benchmark]: RCFGBuilder took 302.01ms. Allocated memory is still 73.4MB. Free memory was 35.5MB in the beginning and 40.9MB in the end (delta: -5.4MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-12-14 04:51:18,622 INFO L158 Benchmark]: TraceAbstraction took 1049.20ms. Allocated memory is still 73.4MB. Free memory was 40.3MB in the beginning and 27.7MB in the end (delta: 12.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-12-14 04:51:18,622 INFO L158 Benchmark]: Witness Printer took 3.16ms. Allocated memory is still 73.4MB. Free memory was 27.7MB in the beginning and 27.4MB in the end (delta: 386.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:51:18,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 880.94ms. Allocated memory is still 73.4MB. Free memory was 48.3MB in the beginning and 40.7MB in the end (delta: 7.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.39ms. Allocated memory is still 73.4MB. Free memory was 40.7MB in the beginning and 37.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.34ms. Allocated memory is still 73.4MB. Free memory was 37.6MB in the beginning and 35.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.01ms. Allocated memory is still 73.4MB. Free memory was 35.5MB in the beginning and 40.9MB in the end (delta: -5.4MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1049.20ms. Allocated memory is still 73.4MB. Free memory was 40.3MB in the beginning and 27.7MB in the end (delta: 12.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Witness Printer took 3.16ms. Allocated memory is still 73.4MB. Free memory was 27.7MB in the beginning and 27.4MB in the end (delta: 386.2kB). 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: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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 staticTrue = 1; [L1549] static int staticFalse = 0; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1580] 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}, staticFalse=0, staticTrue=1] [L1414] COND TRUE line != ((void *)0) [L1580] 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, staticFalse=0, staticTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_predec_05_bad() [L1552] int data; [L1553] 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, staticFalse=0, staticTrue=1] [L1554] COND TRUE \read(staticTrue) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] 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, staticFalse=0, staticTrue=1] [L1568] COND TRUE \read(staticTrue) 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, staticFalse=0, staticTrue=1] [L1571] --data 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, staticFalse=0, staticTrue=1] - UnprovableResult [Line: 1571]: 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, 49 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 04:51:18,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e19783-84c8-43e0-bcaf-857af1f9e3f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample