./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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_82d603dd-73a6-45c5-9cb9-c174e5177040/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 6a5d466dc215f8ed26ed8263d386e990454787d0ed2acd2f0781ac9337fda305 --- 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 10:16:47,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:16:47,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:16:47,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:16:47,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:16:47,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:16:47,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:16:47,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:16:47,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:16:47,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:16:47,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:16:47,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:16:47,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:16:47,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:16:47,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:16:47,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:16:47,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:16:47,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:16:47,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:16:47,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:16:47,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:16:47,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:16:47,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:16:47,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:16:47,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:16:47,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:16:47,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:16:47,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:16:47,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:16:47,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:16:47,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:16:47,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:16:47,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:16:47,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:16:47,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:16:47,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:16:47,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:16:47,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:16:47,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:16:47,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:16:47,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:16:47,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 10:16:47,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:16:47,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:16:47,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:16:47,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:16:47,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:16:47,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:16:47,701 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:16:47,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:16:47,701 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:16:47,701 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:16:47,701 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:16:47,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:16:47,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:16:47,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:16:47,702 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:16:47,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:16:47,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:16:47,703 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:16:47,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:16:47,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:16:47,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:16:47,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:16:47,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:16:47,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:16:47,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:16:47,705 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:16:47,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:16:47,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:16:47,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:16:47,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:16:47,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:16:47,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:16:47,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:16:47,706 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:16:47,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:16:47,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:16:47,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:16:47,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:16:47,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:16:47,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:16:47,708 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_82d603dd-73a6-45c5-9cb9-c174e5177040/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5d466dc215f8ed26ed8263d386e990454787d0ed2acd2f0781ac9337fda305 [2022-12-14 10:16:47,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:16:47,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:16:47,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:16:47,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:16:47,904 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:16:47,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-12-14 10:16:50,562 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:16:50,822 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:16:50,823 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-12-14 10:16:50,841 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/data/ef4b502b4/6265dd6782744e2188cc3c93a3e25a08/FLAG7d61a3f7d [2022-12-14 10:16:50,855 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/data/ef4b502b4/6265dd6782744e2188cc3c93a3e25a08 [2022-12-14 10:16:50,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:16:50,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:16:50,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:16:50,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:16:50,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:16:50,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:16:50" (1/1) ... [2022-12-14 10:16:50,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29293b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:50, skipping insertion in model container [2022-12-14 10:16:50,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:16:50" (1/1) ... [2022-12-14 10:16:50,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:16:50,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:16:51,210 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:16:51,524 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:16:51,530 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:16:51,532 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:16:51,534 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:16:51,535 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:16:51,558 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:16:51,564 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:16:51,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:16:51,577 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:16:51,598 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:16:51,641 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:16:51,643 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:16:51,644 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:16:51,646 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:16:51,647 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:16:51,652 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:16:51,654 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:16:51,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:16:51,770 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:16:51,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51 WrapperNode [2022-12-14 10:16:51,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:16:51,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:16:51,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:16:51,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:16:51,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,816 INFO L138 Inliner]: procedures = 500, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2022-12-14 10:16:51,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:16:51,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:16:51,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:16:51,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:16:51,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,840 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:16:51,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:16:51,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:16:51,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:16:51,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (1/1) ... [2022-12-14 10:16:51,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:16:51,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:16:51,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:16:51,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:16:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:16:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:16:51,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:16:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:16:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 10:16:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:16:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:16:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:16:51,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:16:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:16:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:16:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:16:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:16:52,029 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:16:52,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:16:52,157 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:16:52,182 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:16:52,182 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:16:52,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:16:52 BoogieIcfgContainer [2022-12-14 10:16:52,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:16:52,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:16:52,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:16:52,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:16:52,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:16:50" (1/3) ... [2022-12-14 10:16:52,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c6efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:16:52, skipping insertion in model container [2022-12-14 10:16:52,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:51" (2/3) ... [2022-12-14 10:16:52,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c6efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:16:52, skipping insertion in model container [2022-12-14 10:16:52,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:16:52" (3/3) ... [2022-12-14 10:16:52,191 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-12-14 10:16:52,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:16:52,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:16:52,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:16:52,246 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;@285445d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:16:52,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:16:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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 10:16:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:16:52,255 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:16:52,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:16:52,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:16:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:16:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1607565872, now seen corresponding path program 1 times [2022-12-14 10:16:52,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:16:52,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922525004] [2022-12-14 10:16:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:16:52,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:16:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:16:52,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:16:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:16:52,430 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:16:52,432 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:16:52,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:16:52,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:16:52,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:16:52,438 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 10:16:52,441 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:16:52,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:16:52 BoogieIcfgContainer [2022-12-14 10:16:52,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:16:52,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:16:52,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:16:52,459 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:16:52,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:16:52" (3/4) ... [2022-12-14 10:16:52,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:16:52,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:16:52,463 INFO L158 Benchmark]: Toolchain (without parser) took 1603.60ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 91.4MB in the beginning and 69.4MB in the end (delta: 22.0MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2022-12-14 10:16:52,463 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:16:52,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 910.18ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 91.4MB in the beginning and 109.2MB in the end (delta: -17.8MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2022-12-14 10:16:52,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.16ms. Allocated memory is still 163.6MB. Free memory was 109.2MB in the beginning and 105.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 10:16:52,465 INFO L158 Benchmark]: Boogie Preprocessor took 26.77ms. Allocated memory is still 163.6MB. Free memory was 105.7MB in the beginning and 104.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:16:52,465 INFO L158 Benchmark]: RCFGBuilder took 339.57ms. Allocated memory is still 163.6MB. Free memory was 104.3MB in the beginning and 88.2MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:16:52,465 INFO L158 Benchmark]: TraceAbstraction took 272.83ms. Allocated memory is still 163.6MB. Free memory was 88.2MB in the beginning and 69.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 10:16:52,466 INFO L158 Benchmark]: Witness Printer took 3.18ms. Allocated memory is still 163.6MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:16:52,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 910.18ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 91.4MB in the beginning and 109.2MB in the end (delta: -17.8MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.16ms. Allocated memory is still 163.6MB. Free memory was 109.2MB in the beginning and 105.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.77ms. Allocated memory is still 163.6MB. Free memory was 105.7MB in the beginning and 104.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.57ms. Allocated memory is still 163.6MB. Free memory was 104.3MB in the beginning and 88.2MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 272.83ms. Allocated memory is still 163.6MB. Free memory was 88.2MB in the beginning and 69.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.18ms. Allocated memory is still 163.6MB. Free memory is still 69.4MB. 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: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741832:1073741831}, argv={1073741832:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1567] *dataPtr1 = data [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] --data VAL [data={6:0}, data=-2147483648, data=-2147483648, dataPtr1={6:0}, dataPtr2={6:0}, 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: 1572]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:16:52,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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_82d603dd-73a6-45c5-9cb9-c174e5177040/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 6a5d466dc215f8ed26ed8263d386e990454787d0ed2acd2f0781ac9337fda305 --- 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 10:16:54,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:16:54,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:16:54,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:16:54,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:16:54,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:16:54,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:16:54,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:16:54,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:16:54,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:16:54,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:16:54,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:16:54,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:16:54,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:16:54,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:16:54,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:16:54,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:16:54,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:16:54,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:16:54,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:16:54,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:16:54,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:16:54,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:16:54,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:16:54,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:16:54,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:16:54,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:16:54,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:16:54,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:16:54,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:16:54,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:16:54,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:16:54,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:16:54,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:16:54,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:16:54,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:16:54,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:16:54,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:16:54,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:16:54,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:16:54,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:16:54,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 10:16:54,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:16:54,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:16:54,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:16:54,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:16:54,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:16:54,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:16:54,375 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:16:54,375 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:16:54,375 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:16:54,376 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:16:54,376 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:16:54,376 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:16:54,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:16:54,377 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:16:54,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:16:54,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:16:54,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:16:54,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:16:54,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:16:54,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:16:54,378 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:16:54,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:16:54,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:16:54,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:16:54,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:16:54,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:16:54,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:16:54,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:16:54,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:16:54,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:16:54,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:16:54,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:16:54,380 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:16:54,380 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:16:54,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:16:54,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:16:54,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:16:54,381 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_82d603dd-73a6-45c5-9cb9-c174e5177040/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5d466dc215f8ed26ed8263d386e990454787d0ed2acd2f0781ac9337fda305 [2022-12-14 10:16:54,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:16:54,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:16:54,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:16:54,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:16:54,613 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:16:54,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-12-14 10:16:57,261 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:16:57,556 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:16:57,556 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-12-14 10:16:57,570 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/data/c165be95e/9e07a9d4ac384ed7aa8be8f3a218ccaf/FLAGc560ccdb6 [2022-12-14 10:16:57,585 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/data/c165be95e/9e07a9d4ac384ed7aa8be8f3a218ccaf [2022-12-14 10:16:57,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:16:57,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:16:57,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:16:57,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:16:57,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:16:57,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:16:57" (1/1) ... [2022-12-14 10:16:57,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2653307e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:57, skipping insertion in model container [2022-12-14 10:16:57,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:16:57" (1/1) ... [2022-12-14 10:16:57,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:16:57,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:16:57,884 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:16:58,185 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:16:58,189 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:16:58,190 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:16:58,191 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:16:58,192 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:16:58,205 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:16:58,209 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:16:58,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:16:58,220 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:16:58,236 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:16:58,269 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:16:58,270 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:16:58,271 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:16:58,272 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:16:58,273 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:16:58,276 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:16:58,278 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:16:58,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:16:58,363 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:16:58,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58 WrapperNode [2022-12-14 10:16:58,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:16:58,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:16:58,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:16:58,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:16:58,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,419 INFO L138 Inliner]: procedures = 505, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2022-12-14 10:16:58,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:16:58,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:16:58,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:16:58,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:16:58,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,438 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:16:58,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:16:58,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:16:58,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:16:58,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (1/1) ... [2022-12-14 10:16:58,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:16:58,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:16:58,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:16:58,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:16:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:16:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:16:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:16:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:16:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 10:16:58,623 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:16:58,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:16:58,781 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:16:58,785 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:16:58,786 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:16:58,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:16:58 BoogieIcfgContainer [2022-12-14 10:16:58,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:16:58,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:16:58,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:16:58,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:16:58,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:16:57" (1/3) ... [2022-12-14 10:16:58,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aa6d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:16:58, skipping insertion in model container [2022-12-14 10:16:58,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:16:58" (2/3) ... [2022-12-14 10:16:58,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aa6d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:16:58, skipping insertion in model container [2022-12-14 10:16:58,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:16:58" (3/3) ... [2022-12-14 10:16:58,793 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-12-14 10:16:58,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:16:58,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:16:58,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:16:58,855 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;@2d4f95e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:16:58,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:16:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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 10:16:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:16:58,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:16:58,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:16:58,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:16:58,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:16:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-12-14 10:16:58,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:16:58,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747963602] [2022-12-14 10:16:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:16:58,883 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 10:16:58,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:16:58,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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 10:16:58,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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 10:16:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:16:59,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:16:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:16:59,127 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 10:16:59,129 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:16:59,130 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:16:59,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:16:59,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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 10:16:59,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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 10:16:59,343 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 10:16:59,357 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:16:59,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:16:59 BoogieIcfgContainer [2022-12-14 10:16:59,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:16:59,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:16:59,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:16:59,399 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:16:59,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:16:58" (3/4) ... [2022-12-14 10:16:59,401 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:16:59,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:16:59,402 INFO L158 Benchmark]: Toolchain (without parser) took 1813.47ms. Allocated memory is still 77.6MB. Free memory was 57.4MB in the beginning and 35.7MB in the end (delta: 21.7MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2022-12-14 10:16:59,402 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:16:59,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 773.76ms. Allocated memory is still 77.6MB. Free memory was 57.4MB in the beginning and 32.4MB in the end (delta: 24.9MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2022-12-14 10:16:59,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.68ms. Allocated memory is still 77.6MB. Free memory was 32.4MB in the beginning and 51.9MB in the end (delta: -19.4MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-12-14 10:16:59,403 INFO L158 Benchmark]: Boogie Preprocessor took 21.71ms. Allocated memory is still 77.6MB. Free memory was 51.9MB in the beginning and 49.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:16:59,404 INFO L158 Benchmark]: RCFGBuilder took 344.72ms. Allocated memory is still 77.6MB. Free memory was 49.4MB in the beginning and 33.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:16:59,404 INFO L158 Benchmark]: TraceAbstraction took 609.66ms. Allocated memory is still 77.6MB. Free memory was 33.4MB in the beginning and 36.1MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:16:59,404 INFO L158 Benchmark]: Witness Printer took 2.73ms. Allocated memory is still 77.6MB. Free memory was 36.1MB in the beginning and 35.7MB in the end (delta: 417.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:16:59,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 773.76ms. Allocated memory is still 77.6MB. Free memory was 57.4MB in the beginning and 32.4MB in the end (delta: 24.9MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.68ms. Allocated memory is still 77.6MB. Free memory was 32.4MB in the beginning and 51.9MB in the end (delta: -19.4MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.71ms. Allocated memory is still 77.6MB. Free memory was 51.9MB in the beginning and 49.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 344.72ms. Allocated memory is still 77.6MB. Free memory was 49.4MB in the beginning and 33.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 609.66ms. Allocated memory is still 77.6MB. Free memory was 33.4MB in the beginning and 36.1MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.73ms. Allocated memory is still 77.6MB. Free memory was 36.1MB in the beginning and 35.7MB in the end (delta: 417.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] 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) [L1581] 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] [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1567] *dataPtr1 = data [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] --data VAL [data={-9223372036854775805:0}, data=-2147483648, data=-2147483648, dataPtr1={-9223372036854775805:0}, dataPtr2={-9223372036854775805:0}, 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: 1572]: 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, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:16:59,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82d603dd-73a6-45c5-9cb9-c174e5177040/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