./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 9669eaa504993e58400e39aa486d7137654633921a41df1436ba4312e9969738 --- 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 13:06:12,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:06:12,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:06:12,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:06:12,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:06:12,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:06:12,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:06:12,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:06:12,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:06:12,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:06:12,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:06:12,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:06:12,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:06:12,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:06:12,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:06:12,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:06:12,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:06:12,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:06:12,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:06:12,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:06:12,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:06:12,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:06:12,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:06:12,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:06:12,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:06:12,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:06:12,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:06:12,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:06:12,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:06:12,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:06:12,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:06:12,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:06:12,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:06:12,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:06:12,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:06:12,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:06:12,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:06:12,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:06:12,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:06:12,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:06:12,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:06:12,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 13:06:12,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:06:12,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:06:12,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:06:12,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:06:12,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:06:12,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:06:12,500 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:06:12,500 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:06:12,500 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:06:12,500 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:06:12,500 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:06:12,501 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:06:12,501 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:06:12,501 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:06:12,501 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:06:12,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:06:12,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:06:12,501 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:06:12,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:06:12,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:06:12,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:06:12,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:06:12,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:06:12,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:06:12,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:06:12,503 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:06:12,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:06:12,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:06:12,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:06:12,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:06:12,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:06:12,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:06:12,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:06:12,504 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:06:12,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:06:12,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:06:12,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:06:12,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:06:12,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:06:12,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:06:12,504 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_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9669eaa504993e58400e39aa486d7137654633921a41df1436ba4312e9969738 [2022-12-14 13:06:12,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:06:12,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:06:12,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:06:12,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:06:12,701 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:06:12,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2022-12-14 13:06:15,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:06:15,651 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:06:15,652 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2022-12-14 13:06:15,668 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/data/f1c5b7010/dbf3a20f60e943fc916f79181ced2e86/FLAG2f60b4fd9 [2022-12-14 13:06:15,680 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/data/f1c5b7010/dbf3a20f60e943fc916f79181ced2e86 [2022-12-14 13:06:15,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:06:15,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:06:15,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:06:15,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:06:15,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:06:15,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:06:15" (1/1) ... [2022-12-14 13:06:15,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a780d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:15, skipping insertion in model container [2022-12-14 13:06:15,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:06:15" (1/1) ... [2022-12-14 13:06:15,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:06:15,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:06:16,004 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 13:06:16,296 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:06:16,300 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:06:16,301 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:06:16,303 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:06:16,304 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:06:16,321 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 13:06:16,326 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 13:06:16,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:06:16,335 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:06:16,349 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 13:06:16,383 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:06:16,385 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:06:16,385 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:06:16,387 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:06:16,388 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:06:16,391 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 13:06:16,393 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 13:06:16,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:06:16,513 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:06:16,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16 WrapperNode [2022-12-14 13:06:16,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:06:16,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:06:16,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:06:16,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:06:16,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,552 INFO L138 Inliner]: procedures = 500, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-12-14 13:06:16,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:06:16,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:06:16,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:06:16,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:06:16,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,568 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:06:16,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:06:16,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:06:16,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:06:16,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (1/1) ... [2022-12-14 13:06:16,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:06:16,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:06:16,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:06:16,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:06:16,630 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-12-14 13:06:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-12-14 13:06:16,630 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 13:06:16,630 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2022-12-14 13:06:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2022-12-14 13:06:16,630 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 13:06:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 13:06:16,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 13:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:06:16,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 13:06:16,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:06:16,744 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:06:16,745 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:06:16,871 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:06:16,893 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:06:16,894 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:06:16,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:06:16 BoogieIcfgContainer [2022-12-14 13:06:16,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:06:16,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:06:16,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:06:16,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:06:16,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:06:15" (1/3) ... [2022-12-14 13:06:16,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14379ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:06:16, skipping insertion in model container [2022-12-14 13:06:16,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:16" (2/3) ... [2022-12-14 13:06:16,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14379ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:06:16, skipping insertion in model container [2022-12-14 13:06:16,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:06:16" (3/3) ... [2022-12-14 13:06:16,903 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2022-12-14 13:06:16,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:06:16,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 13:06:16,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:06:16,963 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;@24420e64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:06:16,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 13:06:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 25 states have internal predecessors, (26), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 13:06:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 13:06:16,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:06:16,973 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:06:16,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:06:16,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:06:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1158545232, now seen corresponding path program 1 times [2022-12-14 13:06:16,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:06:16,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032307283] [2022-12-14 13:06:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:06:16,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:06:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:06:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:06:17,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:06:17,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032307283] [2022-12-14 13:06:17,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032307283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:06:17,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:06:17,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:06:17,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736566653] [2022-12-14 13:06:17,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:06:17,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:06:17,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:06:17,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:06:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:06:17,239 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 25 states have internal predecessors, (26), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:06:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:06:17,304 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-12-14 13:06:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:06:17,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2022-12-14 13:06:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:06:17,316 INFO L225 Difference]: With dead ends: 58 [2022-12-14 13:06:17,317 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 13:06:17,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:06:17,321 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:06:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 71 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:06:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 13:06:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-12-14 13:06:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 13:06:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-12-14 13:06:17,350 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 16 [2022-12-14 13:06:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:06:17,351 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-12-14 13:06:17,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:06:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-12-14 13:06:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:06:17,353 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:06:17,353 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:06:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:06:17,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:06:17,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:06:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1555163895, now seen corresponding path program 1 times [2022-12-14 13:06:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:06:17,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210424542] [2022-12-14 13:06:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:06:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:06:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:06:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:06:17,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:06:17,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210424542] [2022-12-14 13:06:17,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210424542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:06:17,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:06:17,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:06:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582772410] [2022-12-14 13:06:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:06:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:06:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:06:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:06:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:06:17,417 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:06:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:06:17,441 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-12-14 13:06:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:06:17,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2022-12-14 13:06:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:06:17,442 INFO L225 Difference]: With dead ends: 42 [2022-12-14 13:06:17,442 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 13:06:17,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:06:17,443 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:06:17,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:06:17,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 13:06:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-14 13:06:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 13:06:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-12-14 13:06:17,448 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 17 [2022-12-14 13:06:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:06:17,448 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-12-14 13:06:17,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:06:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-12-14 13:06:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 13:06:17,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:06:17,449 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:06:17,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:06:17,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:06:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:06:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash -668541365, now seen corresponding path program 1 times [2022-12-14 13:06:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:06:17,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769439908] [2022-12-14 13:06:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:06:17,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:06:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:06:17,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:06:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:06:17,534 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:06:17,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:06:17,535 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 13:06:17,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 13:06:17,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 13:06:17,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 13:06:17,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:06:17,541 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 13:06:17,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:06:17,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:06:17 BoogieIcfgContainer [2022-12-14 13:06:17,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:06:17,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:06:17,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:06:17,576 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:06:17,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:06:16" (3/4) ... [2022-12-14 13:06:17,579 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:06:17,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:06:17,580 INFO L158 Benchmark]: Toolchain (without parser) took 1896.54ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 86.7MB in the beginning and 116.3MB in the end (delta: -29.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2022-12-14 13:06:17,580 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 87.9MB in the beginning and 87.9MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:06:17,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 829.71ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 86.3MB in the beginning and 119.7MB in the end (delta: -33.4MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2022-12-14 13:06:17,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.24ms. Allocated memory is still 178.3MB. Free memory was 119.7MB in the beginning and 116.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:06:17,582 INFO L158 Benchmark]: Boogie Preprocessor took 18.68ms. Allocated memory is still 178.3MB. Free memory was 116.8MB in the beginning and 115.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:06:17,583 INFO L158 Benchmark]: RCFGBuilder took 324.51ms. Allocated memory is still 178.3MB. Free memory was 115.7MB in the beginning and 99.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 13:06:17,583 INFO L158 Benchmark]: TraceAbstraction took 676.91ms. Allocated memory is still 178.3MB. Free memory was 98.9MB in the beginning and 117.4MB in the end (delta: -18.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:06:17,583 INFO L158 Benchmark]: Witness Printer took 3.72ms. Allocated memory is still 178.3MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:06:17,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 87.9MB in the beginning and 87.9MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 829.71ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 86.3MB in the beginning and 119.7MB in the end (delta: -33.4MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.24ms. Allocated memory is still 178.3MB. Free memory was 119.7MB in the beginning and 116.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.68ms. Allocated memory is still 178.3MB. Free memory was 116.8MB in the beginning and 115.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 324.51ms. Allocated memory is still 178.3MB. Free memory was 115.7MB in the beginning and 99.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 676.91ms. Allocated memory is still 178.3MB. Free memory was 98.9MB in the beginning and 117.4MB in the end (delta: -18.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.72ms. Allocated memory is still 178.3MB. Free memory is still 116.3MB. 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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); [L1593] 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={5:0}] [L1414] COND TRUE line != ((void *)0) [L1593] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1594] CALL CWE191_Integer_Underflow__int_fgets_sub_12_bad() [L1550] int data; [L1551] 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] [L1552] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] 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] [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1573] data - 1 VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1581]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1581]: 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 4 procedures, 34 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 72 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 67 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 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 13:06:17,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 9669eaa504993e58400e39aa486d7137654633921a41df1436ba4312e9969738 --- 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 13:06:19,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:06:19,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:06:19,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:06:19,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:06:19,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:06:19,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:06:19,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:06:19,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:06:19,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:06:19,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:06:19,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:06:19,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:06:19,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:06:19,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:06:19,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:06:19,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:06:19,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:06:19,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:06:19,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:06:19,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:06:19,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:06:19,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:06:19,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:06:19,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:06:19,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:06:19,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:06:19,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:06:19,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:06:19,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:06:19,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:06:19,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:06:19,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:06:19,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:06:19,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:06:19,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:06:19,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:06:19,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:06:19,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:06:19,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:06:19,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:06:19,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 13:06:19,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:06:19,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:06:19,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:06:19,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:06:19,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:06:19,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:06:19,468 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:06:19,468 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:06:19,468 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:06:19,468 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:06:19,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:06:19,468 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:06:19,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:06:19,469 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:06:19,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:06:19,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:06:19,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:06:19,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:06:19,470 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 13:06:19,470 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 13:06:19,470 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:06:19,470 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 13:06:19,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:06:19,470 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:06:19,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:06:19,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:06:19,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 13:06:19,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:06:19,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:06:19,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:06:19,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:06:19,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:06:19,472 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 13:06:19,472 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 13:06:19,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:06:19,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:06:19,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 13:06:19,473 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_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9669eaa504993e58400e39aa486d7137654633921a41df1436ba4312e9969738 [2022-12-14 13:06:19,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:06:19,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:06:19,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:06:19,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:06:19,741 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:06:19,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2022-12-14 13:06:22,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:06:22,610 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:06:22,610 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2022-12-14 13:06:22,629 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/data/c37f6c24b/0790ab3cc99b4748bf0fad9d30fa9eca/FLAGbdb2829f2 [2022-12-14 13:06:22,642 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/data/c37f6c24b/0790ab3cc99b4748bf0fad9d30fa9eca [2022-12-14 13:06:22,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:06:22,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:06:22,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:06:22,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:06:22,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:06:22,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:06:22" (1/1) ... [2022-12-14 13:06:22,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8079eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:22, skipping insertion in model container [2022-12-14 13:06:22,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:06:22" (1/1) ... [2022-12-14 13:06:22,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:06:22,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:06:22,975 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 13:06:23,289 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:06:23,294 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:06:23,295 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:06:23,298 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:06:23,298 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:06:23,316 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 13:06:23,323 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 13:06:23,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:06:23,339 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:06:23,356 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 13:06:23,410 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:06:23,412 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:06:23,413 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:06:23,415 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:06:23,416 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:06:23,420 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 13:06:23,423 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 13:06:23,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:06:23,505 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:06:23,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23 WrapperNode [2022-12-14 13:06:23,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:06:23,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:06:23,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:06:23,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:06:23,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,556 INFO L138 Inliner]: procedures = 505, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-12-14 13:06:23,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:06:23,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:06:23,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:06:23,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:06:23,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:06:23,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:06:23,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:06:23,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:06:23,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (1/1) ... [2022-12-14 13:06:23,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:06:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:06:23,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:06:23,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:06:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-12-14 13:06:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-12-14 13:06:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 13:06:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2022-12-14 13:06:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2022-12-14 13:06:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 13:06:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 13:06:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:06:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 13:06:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:06:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:06:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:06:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:06:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 13:06:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 13:06:23,758 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:06:23,759 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:06:23,900 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:06:23,904 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:06:23,905 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:06:23,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:06:23 BoogieIcfgContainer [2022-12-14 13:06:23,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:06:23,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:06:23,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:06:23,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:06:23,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:06:22" (1/3) ... [2022-12-14 13:06:23,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1118eab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:06:23, skipping insertion in model container [2022-12-14 13:06:23,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:06:23" (2/3) ... [2022-12-14 13:06:23,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1118eab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:06:23, skipping insertion in model container [2022-12-14 13:06:23,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:06:23" (3/3) ... [2022-12-14 13:06:23,912 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2022-12-14 13:06:23,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:06:23,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 13:06:23,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:06:23,961 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;@70995ef1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:06:23,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 13:06:23,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 23 states have (on average 1.391304347826087) internal successors, (32), 30 states have internal predecessors, (32), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 13:06:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 13:06:23,969 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:06:23,970 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:06:23,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:06:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:06:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash 412580387, now seen corresponding path program 1 times [2022-12-14 13:06:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:06:23,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152591232] [2022-12-14 13:06:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:06:23,985 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 13:06:23,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:06:23,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 13:06:23,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 13:06:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:06:24,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:06:24,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:06:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:06:24,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:06:24,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:06:24,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152591232] [2022-12-14 13:06:24,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152591232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:06:24,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:06:24,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:06:24,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397844850] [2022-12-14 13:06:24,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:06:24,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:06:24,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:06:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:06:24,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:06:24,157 INFO L87 Difference]: Start difference. First operand has 39 states, 23 states have (on average 1.391304347826087) internal successors, (32), 30 states have internal predecessors, (32), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:06:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:06:24,210 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2022-12-14 13:06:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:06:24,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-12-14 13:06:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:06:24,218 INFO L225 Difference]: With dead ends: 67 [2022-12-14 13:06:24,218 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 13:06:24,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 13:06:24,223 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:06:24,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 94 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:06:24,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 13:06:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 13:06:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:06:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-14 13:06:24,249 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-12-14 13:06:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:06:24,250 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-14 13:06:24,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:06:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-14 13:06:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 13:06:24,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:06:24,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:06:24,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 13:06:24,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 13:06:24,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:06:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:06:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash 752766654, now seen corresponding path program 1 times [2022-12-14 13:06:24,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:06:24,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452324203] [2022-12-14 13:06:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:06:24,462 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 13:06:24,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:06:24,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 13:06:24,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 13:06:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:06:24,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:06:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:06:24,735 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 13:06:24,735 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:06:24,736 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 13:06:24,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 13:06:24,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 13:06:24,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 13:06:24,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 13:06:24,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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 13:06:24,950 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 13:06:24,961 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:06:25,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:06:25 BoogieIcfgContainer [2022-12-14 13:06:25,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:06:25,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:06:25,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:06:25,011 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:06:25,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:06:23" (3/4) ... [2022-12-14 13:06:25,014 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:06:25,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:06:25,015 INFO L158 Benchmark]: Toolchain (without parser) took 2368.50ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 41.0MB in the beginning and 55.9MB in the end (delta: -15.0MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2022-12-14 13:06:25,015 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:06:25,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 858.39ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 40.7MB in the beginning and 34.5MB in the end (delta: 6.3MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-12-14 13:06:25,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.91ms. Allocated memory is still 83.9MB. Free memory was 34.5MB in the beginning and 57.4MB in the end (delta: -22.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-12-14 13:06:25,017 INFO L158 Benchmark]: Boogie Preprocessor took 22.00ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 55.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:06:25,017 INFO L158 Benchmark]: RCFGBuilder took 325.97ms. Allocated memory is still 83.9MB. Free memory was 55.3MB in the beginning and 40.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 13:06:25,018 INFO L158 Benchmark]: TraceAbstraction took 1100.15ms. Allocated memory is still 83.9MB. Free memory was 39.7MB in the beginning and 29.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-12-14 13:06:25,018 INFO L158 Benchmark]: Witness Printer took 2.78ms. Allocated memory is still 83.9MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:06:25,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 858.39ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 40.7MB in the beginning and 34.5MB in the end (delta: 6.3MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.91ms. Allocated memory is still 83.9MB. Free memory was 34.5MB in the beginning and 57.4MB in the end (delta: -22.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.00ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 55.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 325.97ms. Allocated memory is still 83.9MB. Free memory was 55.3MB in the beginning and 40.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1100.15ms. Allocated memory is still 83.9MB. Free memory was 39.7MB in the beginning and 29.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 2.78ms. Allocated memory is still 83.9MB. Free memory is still 55.9MB. 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1593] 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={5:0}] [L1414] COND TRUE line != ((void *)0) [L1593] 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] [L1594] CALL CWE191_Integer_Underflow__int_fgets_sub_12_bad() [L1550] int data; [L1551] 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] [L1552] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] 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] [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1573] data - 1 VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1581]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1581]: 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 4 procedures, 39 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 57 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 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 13:06:25,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02e0a18-7d16-4e1b-a363-bf1ee847a58a/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