./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_04_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_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 7a58e28b5c22b6da6a2d7a400744ff8c761f23ff9e97d9aaed3d255e504e297d --- 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 10:05:06,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:05:06,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:05:06,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:05:06,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:05:06,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:05:06,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:05:06,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:05:06,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:05:06,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:05:06,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:05:06,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:05:06,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:05:06,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:05:06,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:05:06,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:05:06,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:05:06,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:05:06,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:05:06,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:05:06,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:05:06,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:05:06,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:05:06,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:05:06,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:05:06,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:05:06,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:05:06,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:05:06,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:05:06,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:05:06,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:05:06,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:05:06,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:05:06,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:05:06,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:05:06,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:05:06,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:05:06,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:05:06,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:05:06,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:05:06,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:05:06,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 10:05:06,687 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:05:06,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:05:06,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:05:06,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:05:06,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:05:06,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:05:06,688 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:05:06,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:05:06,688 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:05:06,688 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:05:06,689 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:05:06,689 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:05:06,689 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:05:06,689 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:05:06,689 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:05:06,689 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:05:06,690 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:05:06,690 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:05:06,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:05:06,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:05:06,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:05:06,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:05:06,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:05:06,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:05:06,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:05:06,692 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:05:06,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:05:06,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:05:06,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:05:06,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:05:06,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:05:06,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:05:06,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:05:06,693 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:05:06,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:05:06,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:05:06,694 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:05:06,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:05:06,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:05:06,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:05:06,694 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_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a58e28b5c22b6da6a2d7a400744ff8c761f23ff9e97d9aaed3d255e504e297d [2022-12-14 10:05:06,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:05:06,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:05:06,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:05:06,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:05:06,902 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:05:06,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_04_bad.i [2022-12-14 10:05:09,531 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:05:09,772 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:05:09,773 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_04_bad.i [2022-12-14 10:05:09,790 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/data/419cbc3c7/17fb4dd700464a4898031300041824a9/FLAGee5d2c19c [2022-12-14 10:05:09,804 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/data/419cbc3c7/17fb4dd700464a4898031300041824a9 [2022-12-14 10:05:09,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:05:09,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:05:09,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:05:09,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:05:09,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:05:09,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:05:09" (1/1) ... [2022-12-14 10:05:09,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd09ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:09, skipping insertion in model container [2022-12-14 10:05:09,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:05:09" (1/1) ... [2022-12-14 10:05:09,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:05:09,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:05:10,121 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:05:10,391 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:05:10,395 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:05:10,397 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:05:10,398 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:05:10,399 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:05:10,416 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:05:10,420 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:05:10,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:05:10,428 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:05:10,441 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:05:10,470 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:05:10,471 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:05:10,472 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:05:10,474 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:05:10,474 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:05:10,477 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:05:10,479 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:05:10,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:05:10,587 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:05:10,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10 WrapperNode [2022-12-14 10:05:10,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:05:10,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:05:10,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:05:10,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:05:10,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,636 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-12-14 10:05:10,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:05:10,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:05:10,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:05:10,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:05:10,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:05:10,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:05:10,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:05:10,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:05:10,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (1/1) ... [2022-12-14 10:05:10,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:05:10,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:05:10,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:05:10,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:05:10,718 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:05:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:05:10,719 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:05:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:05:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 10:05:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:05:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:05:10,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:05:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:05:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:05:10,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:05:10,830 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:05:10,831 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:05:10,927 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:05:10,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:05:10,949 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:05:10,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:05:10 BoogieIcfgContainer [2022-12-14 10:05:10,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:05:10,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:05:10,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:05:10,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:05:10,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:05:09" (1/3) ... [2022-12-14 10:05:10,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243880fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:05:10, skipping insertion in model container [2022-12-14 10:05:10,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:10" (2/3) ... [2022-12-14 10:05:10,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243880fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:05:10, skipping insertion in model container [2022-12-14 10:05:10,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:05:10" (3/3) ... [2022-12-14 10:05:10,957 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_04_bad.i [2022-12-14 10:05:10,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:05:10,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:05:11,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:05:11,007 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;@45c76357, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:05:11,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:05:11,010 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 10:05:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:05:11,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:05:11,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:05:11,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:05:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:05:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-12-14 10:05:11,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:05:11,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437894765] [2022-12-14 10:05:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:05:11,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:05:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:05:11,189 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 10:05:11,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:05:11,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437894765] [2022-12-14 10:05:11,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437894765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:05:11,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:05:11,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:05:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741797886] [2022-12-14 10:05:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:05:11,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:05:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:05:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:05:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:05:11,217 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 10:05:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:05:11,247 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 10:05:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:05:11,249 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 10:05:11,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:05:11,253 INFO L225 Difference]: With dead ends: 29 [2022-12-14 10:05:11,253 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 10:05:11,255 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 10:05:11,257 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 10:05:11,258 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 10:05:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 10:05:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 10:05:11,279 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 10:05:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 10:05:11,281 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-12-14 10:05:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:05:11,282 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 10:05:11,282 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 10:05:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 10:05:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:05:11,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:05:11,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:05:11,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:05:11,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:05:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:05:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-12-14 10:05:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:05:11,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455308030] [2022-12-14 10:05:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:05:11,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:05:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:05:11,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:05:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:05:11,338 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:05:11,338 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:05:11,339 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:05:11,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:05:11,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:05:11,343 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 10:05:11,346 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:05:11,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:05:11 BoogieIcfgContainer [2022-12-14 10:05:11,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:05:11,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:05:11,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:05:11,362 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:05:11,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:05:10" (3/4) ... [2022-12-14 10:05:11,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:05:11,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:05:11,365 INFO L158 Benchmark]: Toolchain (without parser) took 1557.74ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 91.6MB in the beginning and 58.4MB in the end (delta: 33.3MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. [2022-12-14 10:05:11,366 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:05:11,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 778.80ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 91.3MB in the beginning and 110.8MB in the end (delta: -19.5MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. [2022-12-14 10:05:11,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.27ms. Allocated memory is still 161.5MB. Free memory was 110.8MB in the beginning and 107.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 10:05:11,367 INFO L158 Benchmark]: Boogie Preprocessor took 22.07ms. Allocated memory is still 161.5MB. Free memory was 107.6MB in the beginning and 106.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:05:11,367 INFO L158 Benchmark]: RCFGBuilder took 291.01ms. Allocated memory is still 161.5MB. Free memory was 106.6MB in the beginning and 91.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:05:11,367 INFO L158 Benchmark]: TraceAbstraction took 409.25ms. Allocated memory is still 161.5MB. Free memory was 90.8MB in the beginning and 59.4MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 10:05:11,367 INFO L158 Benchmark]: Witness Printer took 2.75ms. Allocated memory is still 161.5MB. Free memory was 59.4MB in the beginning and 58.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:05:11,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 778.80ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 91.3MB in the beginning and 110.8MB in the end (delta: -19.5MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.27ms. Allocated memory is still 161.5MB. Free memory was 110.8MB in the beginning and 107.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.07ms. Allocated memory is still 161.5MB. Free memory was 107.6MB in the beginning and 106.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 291.01ms. Allocated memory is still 161.5MB. Free memory was 106.6MB in the beginning and 91.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 409.25ms. Allocated memory is still 161.5MB. Free memory was 90.8MB in the beginning and 59.4MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 2.75ms. Allocated memory is still 161.5MB. Free memory was 59.4MB in the beginning and 58.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 0; [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [\old(argc)=1073741825, argc=1073741825, 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_postdec_04_bad() [L1552] int data; [L1553] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1568] COND TRUE \read(STATIC_CONST_TRUE) [L1571] 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:05:11,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 7a58e28b5c22b6da6a2d7a400744ff8c761f23ff9e97d9aaed3d255e504e297d --- 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 10:05:13,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:05:13,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:05:13,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:05:13,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:05:13,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:05:13,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:05:13,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:05:13,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:05:13,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:05:13,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:05:13,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:05:13,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:05:13,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:05:13,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:05:13,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:05:13,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:05:13,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:05:13,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:05:13,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:05:13,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:05:13,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:05:13,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:05:13,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:05:13,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:05:13,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:05:13,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:05:13,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:05:13,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:05:13,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:05:13,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:05:13,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:05:13,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:05:13,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:05:13,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:05:13,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:05:13,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:05:13,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:05:13,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:05:13,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:05:13,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:05:13,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 10:05:13,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:05:13,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:05:13,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:05:13,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:05:13,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:05:13,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:05:13,124 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:05:13,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:05:13,124 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:05:13,124 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:05:13,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:05:13,125 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:05:13,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:05:13,125 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:05:13,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:05:13,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:05:13,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:05:13,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:05:13,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:05:13,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:05:13,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:05:13,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:05:13,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:05:13,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:05:13,127 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:05:13,127 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:05:13,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:05:13,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:05:13,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:05:13,127 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_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a58e28b5c22b6da6a2d7a400744ff8c761f23ff9e97d9aaed3d255e504e297d [2022-12-14 10:05:13,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:05:13,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:05:13,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:05:13,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:05:13,357 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:05:13,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_04_bad.i [2022-12-14 10:05:15,967 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:05:16,249 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:05:16,250 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_04_bad.i [2022-12-14 10:05:16,270 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/data/1eac1bc0c/7ea3bb7406a649468dce61d490010a66/FLAG8b7431411 [2022-12-14 10:05:16,284 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/data/1eac1bc0c/7ea3bb7406a649468dce61d490010a66 [2022-12-14 10:05:16,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:05:16,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:05:16,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:05:16,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:05:16,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:05:16,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:05:16" (1/1) ... [2022-12-14 10:05:16,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c66f7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:16, skipping insertion in model container [2022-12-14 10:05:16,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:05:16" (1/1) ... [2022-12-14 10:05:16,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:05:16,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:05:16,612 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:05:16,891 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:05:16,895 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:05:16,896 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:05:16,898 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:05:16,898 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:05:16,919 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:05:16,923 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:05:16,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:05:16,935 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:05:16,948 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:05:16,980 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:05:16,981 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:05:16,981 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:05:16,983 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:05:16,983 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:05:16,986 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:05:16,988 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:05:16,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:05:17,068 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:05:17,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17 WrapperNode [2022-12-14 10:05:17,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:05:17,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:05:17,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:05:17,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:05:17,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,118 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-12-14 10:05:17,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:05:17,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:05:17,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:05:17,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:05:17,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:05:17,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:05:17,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:05:17,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:05:17,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (1/1) ... [2022-12-14 10:05:17,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:05:17,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:05:17,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:05:17,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:05:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:05:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:05:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:05:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:05:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:05:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:05:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:05:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:05:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:05:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:05:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 10:05:17,324 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:05:17,326 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:05:17,432 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:05:17,436 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:05:17,437 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:05:17,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:05:17 BoogieIcfgContainer [2022-12-14 10:05:17,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:05:17,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:05:17,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:05:17,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:05:17,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:05:16" (1/3) ... [2022-12-14 10:05:17,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4416ba49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:05:17, skipping insertion in model container [2022-12-14 10:05:17,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:05:17" (2/3) ... [2022-12-14 10:05:17,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4416ba49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:05:17, skipping insertion in model container [2022-12-14 10:05:17,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:05:17" (3/3) ... [2022-12-14 10:05:17,445 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_04_bad.i [2022-12-14 10:05:17,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:05:17,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:05:17,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:05:17,501 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;@37853a4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:05:17,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:05:17,505 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 10:05:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:05:17,511 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:05:17,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:05:17,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:05:17,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:05:17,516 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-14 10:05:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:05:17,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323836565] [2022-12-14 10:05:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:05:17,527 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 10:05:17,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:05:17,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 10:05:17,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 10:05:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:05:17,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:05:17,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:05:17,689 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 10:05:17,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:05:17,690 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:05:17,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323836565] [2022-12-14 10:05:17,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323836565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:05:17,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:05:17,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:05:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014227144] [2022-12-14 10:05:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:05:17,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:05:17,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:05:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:05:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:05:17,731 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 10:05:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:05:17,767 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-12-14 10:05:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:05:17,769 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 10:05:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:05:17,775 INFO L225 Difference]: With dead ends: 39 [2022-12-14 10:05:17,775 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 10:05:17,777 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 10:05:17,779 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 10:05:17,780 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 10:05:17,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 10:05:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 10:05:17,805 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 10:05:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 10:05:17,806 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-14 10:05:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:05:17,807 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 10:05:17,807 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 10:05:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 10:05:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:05:17,808 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:05:17,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:05:17,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 10:05:18,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 10:05:18,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:05:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:05:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-14 10:05:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:05:18,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92657842] [2022-12-14 10:05:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:05:18,011 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 10:05:18,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:05:18,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 10:05:18,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 10:05:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:05:18,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:05:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:05:18,141 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 10:05:18,141 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:05:18,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:05:18,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:05:18,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 10:05:18,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/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 10:05:18,353 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 10:05:18,356 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:05:18,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:05:18 BoogieIcfgContainer [2022-12-14 10:05:18,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:05:18,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:05:18,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:05:18,377 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:05:18,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:05:17" (3/4) ... [2022-12-14 10:05:18,380 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:05:18,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:05:18,381 INFO L158 Benchmark]: Toolchain (without parser) took 2093.07ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 61.7MB in the beginning and 64.1MB in the end (delta: -2.4MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2022-12-14 10:05:18,381 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory is still 31.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:05:18,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 779.54ms. Allocated memory is still 90.2MB. Free memory was 61.6MB in the beginning and 47.3MB in the end (delta: 14.4MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2022-12-14 10:05:18,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.45ms. Allocated memory is still 90.2MB. Free memory was 47.3MB in the beginning and 44.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:05:18,382 INFO L158 Benchmark]: Boogie Preprocessor took 28.47ms. Allocated memory is still 90.2MB. Free memory was 44.3MB in the beginning and 42.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:05:18,383 INFO L158 Benchmark]: RCFGBuilder took 290.28ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 42.2MB in the beginning and 75.1MB in the end (delta: -32.9MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-12-14 10:05:18,383 INFO L158 Benchmark]: TraceAbstraction took 936.55ms. Allocated memory is still 109.1MB. Free memory was 74.5MB in the beginning and 64.7MB in the end (delta: 9.8MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-12-14 10:05:18,384 INFO L158 Benchmark]: Witness Printer took 2.97ms. Allocated memory is still 109.1MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:05:18,386 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 is still 31.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 779.54ms. Allocated memory is still 90.2MB. Free memory was 61.6MB in the beginning and 47.3MB in the end (delta: 14.4MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.45ms. Allocated memory is still 90.2MB. Free memory was 47.3MB in the beginning and 44.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.47ms. Allocated memory is still 90.2MB. Free memory was 44.3MB in the beginning and 42.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 290.28ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 42.2MB in the beginning and 75.1MB in the end (delta: -32.9MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * TraceAbstraction took 936.55ms. Allocated memory is still 109.1MB. Free memory was 74.5MB in the beginning and 64.7MB in the end (delta: 9.8MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Witness Printer took 2.97ms. Allocated memory is still 109.1MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_postdec_04_bad() [L1552] int data; [L1553] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1568] COND TRUE \read(STATIC_CONST_TRUE) [L1571] 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 50 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 10:05:18,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8328a9-8140-4104-aa71-ddbd9bbcc4f2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample