./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_10_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_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_10_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 5c06bc01125067b5395e96a559359379a185a2b06e09ddefee7b667ea34383c9 --- 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 05:40:46,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:40:46,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:40:46,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:40:46,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:40:46,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:40:46,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:40:46,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:40:46,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:40:46,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:40:46,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:40:46,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:40:46,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:40:46,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:40:46,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:40:46,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:40:46,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:40:46,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:40:46,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:40:46,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:40:46,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:40:46,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:40:46,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:40:46,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:40:46,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:40:46,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:40:46,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:40:46,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:40:46,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:40:46,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:40:46,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:40:46,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:40:46,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:40:46,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:40:46,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:40:46,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:40:46,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:40:46,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:40:46,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:40:46,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:40:46,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:40:46,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 05:40:46,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:40:46,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:40:46,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:40:46,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:40:46,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:40:46,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:40:46,553 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:40:46,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:40:46,554 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:40:46,554 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:40:46,554 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:40:46,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:40:46,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:40:46,554 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:40:46,555 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:40:46,555 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:40:46,555 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:40:46,555 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:40:46,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:40:46,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:40:46,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:40:46,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:40:46,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:40:46,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:40:46,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:40:46,557 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 05:40:46,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:40:46,558 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:40:46,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:40:46,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:40:46,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:40:46,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:40:46,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:40:46,559 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:40:46,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:40:46,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:40:46,559 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:40:46,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:40:46,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:40:46,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:40:46,560 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_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c06bc01125067b5395e96a559359379a185a2b06e09ddefee7b667ea34383c9 [2022-12-14 05:40:46,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:40:46,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:40:46,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:40:46,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:40:46,783 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:40:46,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_10_bad.i [2022-12-14 05:40:49,384 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:40:49,637 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:40:49,638 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_10_bad.i [2022-12-14 05:40:49,654 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/data/603ad1595/b7aa830ede8844fc8768cec5503ff3e5/FLAG46be74e53 [2022-12-14 05:40:49,668 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/data/603ad1595/b7aa830ede8844fc8768cec5503ff3e5 [2022-12-14 05:40:49,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:40:49,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:40:49,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:40:49,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:40:49,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:40:49,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:40:49" (1/1) ... [2022-12-14 05:40:49,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c8aed1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:49, skipping insertion in model container [2022-12-14 05:40:49,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:40:49" (1/1) ... [2022-12-14 05:40:49,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:40:49,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:40:49,985 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 05:40:50,236 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:40:50,240 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 05:40:50,241 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 05:40:50,243 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 05:40:50,243 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 05:40:50,256 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 05:40:50,260 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 05:40:50,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:40:50,269 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:40:50,281 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 05:40:50,311 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:40:50,312 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 05:40:50,313 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 05:40:50,314 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 05:40:50,315 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 05:40:50,318 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 05:40:50,319 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 05:40:50,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:40:50,388 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:40:50,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50 WrapperNode [2022-12-14 05:40:50,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:40:50,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:40:50,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:40:50,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:40:50,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,443 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-14 05:40:50,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:40:50,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:40:50,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:40:50,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:40:50,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:40:50,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:40:50,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:40:50,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:40:50,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (1/1) ... [2022-12-14 05:40:50,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:40:50,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:40:50,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:40:50,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:40:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 05:40:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 05:40:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 05:40:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:40:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 05:40:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:40:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:40:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:40:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:40:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 05:40:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:40:50,629 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:40:50,631 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:40:50,741 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:40:50,770 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:40:50,770 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:40:50,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:50 BoogieIcfgContainer [2022-12-14 05:40:50,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:40:50,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:40:50,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:40:50,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:40:50,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:40:49" (1/3) ... [2022-12-14 05:40:50,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cde392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:40:50, skipping insertion in model container [2022-12-14 05:40:50,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:50" (2/3) ... [2022-12-14 05:40:50,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cde392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:40:50, skipping insertion in model container [2022-12-14 05:40:50,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:50" (3/3) ... [2022-12-14 05:40:50,781 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_10_bad.i [2022-12-14 05:40:50,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:40:50,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 05:40:50,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:40:50,852 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;@55a9d0cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:40:50,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 05:40:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:40:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:40:50,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:50,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:50,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 05:40:50,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-12-14 05:40:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:50,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602449627] [2022-12-14 05:40:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:40:51,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:51,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602449627] [2022-12-14 05:40:51,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602449627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:51,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:51,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979933996] [2022-12-14 05:40:51,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:51,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:51,143 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 05:40:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:51,179 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 05:40:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2022-12-14 05:40:51,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:51,188 INFO L225 Difference]: With dead ends: 29 [2022-12-14 05:40:51,188 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 05:40:51,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:51,194 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:51,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:40:51,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 05:40:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 05:40:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:40:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 05:40:51,227 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-12-14 05:40:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:51,228 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 05:40:51,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 05:40:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 05:40:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 05:40:51,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:51,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:51,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:40:51,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 05:40:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:51,231 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-12-14 05:40:51,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:51,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484555381] [2022-12-14 05:40:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:40:51,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 05:40:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:40:51,298 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 05:40:51,299 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 05:40:51,300 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 05:40:51,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 05:40:51,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:40:51,306 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 05:40:51,310 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:40:51,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:40:51 BoogieIcfgContainer [2022-12-14 05:40:51,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:40:51,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:40:51,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:40:51,332 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:40:51,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:50" (3/4) ... [2022-12-14 05:40:51,336 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 05:40:51,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:40:51,337 INFO L158 Benchmark]: Toolchain (without parser) took 1665.17ms. Allocated memory is still 138.4MB. Free memory was 79.9MB in the beginning and 58.5MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-14 05:40:51,338 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 64.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:40:51,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 715.65ms. Allocated memory is still 138.4MB. Free memory was 79.8MB in the beginning and 59.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 05:40:51,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.32ms. Allocated memory is still 138.4MB. Free memory was 59.2MB in the beginning and 107.5MB in the end (delta: -48.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-12-14 05:40:51,339 INFO L158 Benchmark]: Boogie Preprocessor took 23.89ms. Allocated memory is still 138.4MB. Free memory was 107.5MB in the beginning and 106.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:40:51,339 INFO L158 Benchmark]: RCFGBuilder took 304.09ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 92.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 05:40:51,340 INFO L158 Benchmark]: TraceAbstraction took 555.76ms. Allocated memory is still 138.4MB. Free memory was 91.4MB in the beginning and 59.2MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-14 05:40:51,340 INFO L158 Benchmark]: Witness Printer took 4.92ms. Allocated memory is still 138.4MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:40:51,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 64.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 715.65ms. Allocated memory is still 138.4MB. Free memory was 79.8MB in the beginning and 59.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.32ms. Allocated memory is still 138.4MB. Free memory was 59.2MB in the beginning and 107.5MB in the end (delta: -48.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.89ms. Allocated memory is still 138.4MB. Free memory was 107.5MB in the beginning and 106.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 304.09ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 92.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 555.76ms. Allocated memory is still 138.4MB. Free memory was 91.4MB in the beginning and 59.2MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 4.92ms. Allocated memory is still 138.4MB. Free memory is still 58.5MB. 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: 1569]: 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); [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, argv={1073741828:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_postdec_10_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] COND TRUE \read(globalTrue) [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] [L1566] COND TRUE \read(globalTrue) [L1569] data-- VAL [data=-2147483648, 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 05:40:51,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_10_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 5c06bc01125067b5395e96a559359379a185a2b06e09ddefee7b667ea34383c9 --- 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 05:40:53,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:40:53,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:40:53,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:40:53,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:40:53,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:40:53,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:40:53,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:40:53,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:40:53,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:40:53,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:40:53,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:40:53,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:40:53,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:40:53,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:40:53,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:40:53,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:40:53,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:40:53,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:40:53,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:40:53,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:40:53,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:40:53,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:40:53,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:40:53,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:40:53,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:40:53,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:40:53,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:40:53,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:40:53,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:40:53,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:40:53,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:40:53,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:40:53,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:40:53,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:40:53,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:40:53,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:40:53,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:40:53,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:40:53,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:40:53,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:40:53,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 05:40:53,144 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:40:53,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:40:53,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:40:53,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:40:53,145 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:40:53,145 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:40:53,145 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:40:53,146 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:40:53,146 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:40:53,146 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:40:53,146 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:40:53,146 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:40:53,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:40:53,147 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:40:53,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:40:53,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:40:53,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:40:53,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:40:53,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:40:53,148 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:40:53,148 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 05:40:53,148 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:40:53,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:40:53,149 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:40:53,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:40:53,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:40:53,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:40:53,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:40:53,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:40:53,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:40:53,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:40:53,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:40:53,150 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:40:53,150 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:40:53,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:40:53,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:40:53,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:40:53,151 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_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c06bc01125067b5395e96a559359379a185a2b06e09ddefee7b667ea34383c9 [2022-12-14 05:40:53,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:40:53,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:40:53,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:40:53,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:40:53,402 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:40:53,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_10_bad.i [2022-12-14 05:40:56,000 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:40:56,267 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:40:56,267 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_10_bad.i [2022-12-14 05:40:56,281 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/data/123678e0f/6c68f491f6cd4d17a0d779ebb33dc963/FLAGec73004e8 [2022-12-14 05:40:56,292 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/data/123678e0f/6c68f491f6cd4d17a0d779ebb33dc963 [2022-12-14 05:40:56,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:40:56,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:40:56,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:40:56,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:40:56,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:40:56,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:40:56" (1/1) ... [2022-12-14 05:40:56,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5689dae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:56, skipping insertion in model container [2022-12-14 05:40:56,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:40:56" (1/1) ... [2022-12-14 05:40:56,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:40:56,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:40:56,591 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 05:40:56,867 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:40:56,871 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 05:40:56,872 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 05:40:56,873 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 05:40:56,874 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 05:40:56,890 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 05:40:56,894 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 05:40:56,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:40:56,907 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:40:56,922 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 05:40:56,957 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:40:56,972 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 05:40:56,972 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 05:40:56,974 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 05:40:56,974 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 05:40:56,977 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 05:40:56,979 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 05:40:56,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:40:57,102 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:40:57,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57 WrapperNode [2022-12-14 05:40:57,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:40:57,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:40:57,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:40:57,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:40:57,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,140 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 05:40:57,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:40:57,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:40:57,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:40:57,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:40:57,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:40:57,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:40:57,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:40:57,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:40:57,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (1/1) ... [2022-12-14 05:40:57,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:40:57,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:40:57,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:40:57,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:40:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 05:40:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 05:40:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 05:40:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:40:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 05:40:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:40:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:40:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:40:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:40:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 05:40:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 05:40:57,345 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:40:57,347 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:40:57,468 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:40:57,474 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:40:57,474 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 05:40:57,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:57 BoogieIcfgContainer [2022-12-14 05:40:57,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:40:57,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:40:57,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:40:57,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:40:57,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:40:56" (1/3) ... [2022-12-14 05:40:57,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6145c2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:40:57, skipping insertion in model container [2022-12-14 05:40:57,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:57" (2/3) ... [2022-12-14 05:40:57,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6145c2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:40:57, skipping insertion in model container [2022-12-14 05:40:57,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:57" (3/3) ... [2022-12-14 05:40:57,485 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_10_bad.i [2022-12-14 05:40:57,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:40:57,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 05:40:57,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:40:57,556 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;@5a6a0993, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:40:57,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 05:40:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:40:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 05:40:57,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:57,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:57,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 05:40:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-14 05:40:57,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:40:57,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727630484] [2022-12-14 05:40:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:57,592 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 05:40:57,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:40:57,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 05:40:57,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 05:40:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:57,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:40:57,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:40:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:40:57,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:40:57,797 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:40:57,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727630484] [2022-12-14 05:40:57,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727630484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:57,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:57,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:40:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355518378] [2022-12-14 05:40:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:40:57,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:57,835 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 05:40:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:57,863 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-12-14 05:40:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:57,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 05:40:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:57,871 INFO L225 Difference]: With dead ends: 39 [2022-12-14 05:40:57,871 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 05:40:57,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:57,876 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:57,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:40:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 05:40:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 05:40:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:40:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 05:40:57,907 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-14 05:40:57,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:57,909 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 05:40:57,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 05:40:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 05:40:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 05:40:57,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:57,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:57,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 05:40:58,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 05:40:58,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 05:40:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-14 05:40:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:40:58,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073063739] [2022-12-14 05:40:58,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:58,113 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 05:40:58,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:40:58,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 05:40:58,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 05:40:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:40:58,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 05:40:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:40:58,236 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 05:40:58,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 05:40:58,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 05:40:58,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 05:40:58,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 05:40:58,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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 05:40:58,450 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 05:40:58,460 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:40:58,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:40:58 BoogieIcfgContainer [2022-12-14 05:40:58,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:40:58,518 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:40:58,518 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:40:58,518 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:40:58,519 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:57" (3/4) ... [2022-12-14 05:40:58,523 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 05:40:58,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:40:58,524 INFO L158 Benchmark]: Toolchain (without parser) took 2228.50ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 41.8MB in the beginning and 33.3MB in the end (delta: 8.5MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-12-14 05:40:58,525 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:40:58,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 806.17ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 41.6MB in the beginning and 42.1MB in the end (delta: -472.5kB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2022-12-14 05:40:58,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.77ms. Allocated memory is still 81.8MB. Free memory was 42.1MB in the beginning and 39.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:40:58,526 INFO L158 Benchmark]: Boogie Preprocessor took 21.00ms. Allocated memory is still 81.8MB. Free memory was 39.2MB in the beginning and 37.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 05:40:58,527 INFO L158 Benchmark]: RCFGBuilder took 314.42ms. Allocated memory is still 81.8MB. Free memory was 37.1MB in the beginning and 45.3MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 05:40:58,527 INFO L158 Benchmark]: TraceAbstraction took 1038.33ms. Allocated memory is still 81.8MB. Free memory was 44.5MB in the beginning and 33.7MB in the end (delta: 10.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-12-14 05:40:58,528 INFO L158 Benchmark]: Witness Printer took 4.98ms. Allocated memory is still 81.8MB. Free memory was 33.7MB in the beginning and 33.3MB in the end (delta: 424.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:40:58,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 806.17ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 41.6MB in the beginning and 42.1MB in the end (delta: -472.5kB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.77ms. Allocated memory is still 81.8MB. Free memory was 42.1MB in the beginning and 39.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.00ms. Allocated memory is still 81.8MB. Free memory was 39.2MB in the beginning and 37.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 314.42ms. Allocated memory is still 81.8MB. Free memory was 37.1MB in the beginning and 45.3MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1038.33ms. Allocated memory is still 81.8MB. Free memory was 44.5MB in the beginning and 33.7MB in the end (delta: 10.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 4.98ms. Allocated memory is still 81.8MB. Free memory was 33.7MB in the beginning and 33.3MB in the end (delta: 424.0kB). 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: 1569]: 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] [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_postdec_10_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] COND TRUE \read(globalTrue) [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] [L1566] COND TRUE \read(globalTrue) [L1569] data-- VAL [data=-2147483648, 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 05:40:58,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23b1e91-b9cd-4737-a498-0cd36b07fce3/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