./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW --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 c1505671f45043d55fae334a2421f20d581bbaa5dda6423d580cd8cb1c356e93 --- 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-4e7fbc6 [2022-11-23 13:55:04,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:55:04,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:55:04,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:55:04,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:55:04,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:55:04,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:55:04,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:55:04,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:55:04,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:55:04,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:55:04,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:55:04,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:55:04,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:55:04,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:55:04,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:55:04,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:55:04,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:55:04,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:55:04,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:55:04,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:55:04,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:55:04,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:55:04,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:55:04,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:55:04,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:55:04,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:55:04,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:55:04,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:55:04,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:55:04,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:55:04,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:55:04,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:55:04,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:55:04,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:55:04,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:55:04,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:55:04,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:55:04,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:55:04,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:55:04,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:55:04,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 13:55:04,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:55:04,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:55:04,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:55:04,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:55:04,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:55:04,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:55:04,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:55:04,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:55:04,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:55:04,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:55:04,568 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:55:04,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:55:04,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:55:04,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:55:04,569 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:55:04,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:55:04,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:55:04,570 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:55:04,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:55:04,571 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:55:04,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:55:04,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:55:04,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:55:04,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:55:04,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:55:04,573 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:55:04,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:55:04,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:55:04,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:55:04,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:55:04,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:55:04,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:04,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:55:04,576 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:55:04,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:55:04,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:55:04,576 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:55:04,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:55:04,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:55:04,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:55:04,578 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_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1505671f45043d55fae334a2421f20d581bbaa5dda6423d580cd8cb1c356e93 [2022-11-23 13:55:04,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:55:04,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:55:04,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:55:04,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:55:04,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:55:04,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2022-11-23 13:55:08,207 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:55:08,637 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:55:08,651 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2022-11-23 13:55:08,682 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/data/524c17f5f/77ac2ef4dc2b45cb98494abcb018e5ba/FLAG60c77faa2 [2022-11-23 13:55:08,699 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/data/524c17f5f/77ac2ef4dc2b45cb98494abcb018e5ba [2022-11-23 13:55:08,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:55:08,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:55:08,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:55:08,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:55:08,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:55:08,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:08" (1/1) ... [2022-11-23 13:55:08,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bf7f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:08, skipping insertion in model container [2022-11-23 13:55:08,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:08" (1/1) ... [2022-11-23 13:55:08,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:55:08,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:55:09,252 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 13:55:10,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:55:10,033 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:55:10,055 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 13:55:10,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:55:10,355 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:55:10,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10 WrapperNode [2022-11-23 13:55:10,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:55:10,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:10,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:55:10,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:55:10,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,458 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-23 13:55:10,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:10,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:55:10,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:55:10,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:55:10,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,486 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:55:10,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:55:10,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:55:10,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:55:10,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (1/1) ... [2022-11-23 13:55:10,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:10,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:10,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:55:10,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:55:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 13:55:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 13:55:10,617 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 13:55:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:55:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:55:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:55:10,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:55:10,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:55:10,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:55:10,618 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 13:55:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:55:10,807 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:55:10,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:55:10,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:55:11,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:55:11,018 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 13:55:11,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:11 BoogieIcfgContainer [2022-11-23 13:55:11,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:55:11,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:55:11,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:55:11,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:55:11,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:08" (1/3) ... [2022-11-23 13:55:11,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2a63ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:11, skipping insertion in model container [2022-11-23 13:55:11,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:10" (2/3) ... [2022-11-23 13:55:11,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2a63ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:11, skipping insertion in model container [2022-11-23 13:55:11,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:11" (3/3) ... [2022-11-23 13:55:11,031 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2022-11-23 13:55:11,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:55:11,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 13:55:11,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:55:11,113 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;@60aa64bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:55:11,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 13:55:11,118 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) [2022-11-23 13:55:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 13:55:11,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:11,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:11,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 13:55:11,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:11,135 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-11-23 13:55:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:11,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453988731] [2022-11-23 13:55:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:11,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:55:11,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:11,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453988731] [2022-11-23 13:55:11,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453988731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:11,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:11,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:55:11,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980574102] [2022-11-23 13:55:11,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:11,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:11,540 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) [2022-11-23 13:55:11,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:11,599 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-23 13:55:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:11,607 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 [2022-11-23 13:55:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:11,615 INFO L225 Difference]: With dead ends: 29 [2022-11-23 13:55:11,620 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 13:55:11,622 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 [2022-11-23 13:55:11,626 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 [2022-11-23 13:55:11,627 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] [2022-11-23 13:55:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 13:55:11,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 13:55:11,670 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) [2022-11-23 13:55:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-23 13:55:11,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-11-23 13:55:11,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:11,674 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-23 13:55:11,674 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) [2022-11-23 13:55:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-23 13:55:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 13:55:11,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:11,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:11,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:55:11,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 13:55:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:11,677 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-11-23 13:55:11,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:11,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684018906] [2022-11-23 13:55:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:11,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:55:11,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:55:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:55:11,760 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:55:11,760 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:55:11,762 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 13:55:11,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 13:55:11,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:55:11,769 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 13:55:11,774 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:55:11,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:55:11 BoogieIcfgContainer [2022-11-23 13:55:11,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:55:11,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:55:11,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:55:11,802 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:55:11,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:11" (3/4) ... [2022-11-23 13:55:11,806 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 13:55:11,807 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:55:11,807 INFO L158 Benchmark]: Toolchain (without parser) took 3103.80ms. Allocated memory is still 190.8MB. Free memory was 155.4MB in the beginning and 96.5MB in the end (delta: 58.9MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2022-11-23 13:55:11,808 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:55:11,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1652.16ms. Allocated memory is still 190.8MB. Free memory was 155.4MB in the beginning and 146.8MB in the end (delta: 8.6MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2022-11-23 13:55:11,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.63ms. Allocated memory is still 190.8MB. Free memory was 146.8MB in the beginning and 144.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:55:11,810 INFO L158 Benchmark]: Boogie Preprocessor took 41.19ms. Allocated memory is still 190.8MB. Free memory was 144.7MB in the beginning and 142.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:55:11,810 INFO L158 Benchmark]: RCFGBuilder took 519.57ms. Allocated memory is still 190.8MB. Free memory was 142.6MB in the beginning and 127.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 13:55:11,811 INFO L158 Benchmark]: TraceAbstraction took 777.96ms. Allocated memory is still 190.8MB. Free memory was 127.9MB in the beginning and 96.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-23 13:55:11,811 INFO L158 Benchmark]: Witness Printer took 4.69ms. Allocated memory is still 190.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:55:11,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1652.16ms. Allocated memory is still 190.8MB. Free memory was 155.4MB in the beginning and 146.8MB in the end (delta: 8.6MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.63ms. Allocated memory is still 190.8MB. Free memory was 146.8MB in the beginning and 144.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.19ms. Allocated memory is still 190.8MB. Free memory was 144.7MB in the beginning and 142.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.57ms. Allocated memory is still 190.8MB. Free memory was 142.6MB in the beginning and 127.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 777.96ms. Allocated memory is still 190.8MB. Free memory was 127.9MB in the beginning and 96.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 4.69ms. Allocated memory is still 190.8MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1577] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [#in~argv={1073741828:1073741827}, argc=1073741826, 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, unknown-#in~argc-unknown=1073741826] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_14_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE globalFive==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE globalFive==5 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] [L1569] data - 1 VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s 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 [2022-11-23 13:55:11,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW --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 c1505671f45043d55fae334a2421f20d581bbaa5dda6423d580cd8cb1c356e93 --- 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-4e7fbc6 [2022-11-23 13:55:14,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:55:14,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:55:14,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:55:14,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:55:14,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:55:14,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:55:14,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:55:14,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:55:14,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:55:14,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:55:14,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:55:14,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:55:14,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:55:14,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:55:14,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:55:14,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:55:14,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:55:14,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:55:14,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:55:14,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:55:14,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:55:14,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:55:14,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:55:14,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:55:14,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:55:14,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:55:14,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:55:14,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:55:14,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:55:14,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:55:14,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:55:14,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:55:14,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:55:14,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:55:14,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:55:14,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:55:14,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:55:14,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:55:14,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:55:14,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:55:14,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 13:55:14,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:55:14,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:55:14,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:55:14,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:55:14,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:55:14,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:55:14,816 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:55:14,816 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:55:14,817 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:55:14,817 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:55:14,818 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:55:14,818 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:55:14,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:55:14,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:55:14,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:55:14,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:55:14,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:55:14,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:55:14,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:55:14,821 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 13:55:14,821 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:55:14,821 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 13:55:14,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:55:14,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:55:14,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:55:14,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:55:14,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 13:55:14,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:55:14,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:14,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:55:14,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:55:14,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:55:14,824 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 13:55:14,824 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 13:55:14,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:55:14,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:55:14,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 13:55:14,825 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_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1505671f45043d55fae334a2421f20d581bbaa5dda6423d580cd8cb1c356e93 [2022-11-23 13:55:15,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:55:15,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:55:15,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:55:15,288 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:55:15,289 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:55:15,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2022-11-23 13:55:18,763 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:55:19,221 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:55:19,222 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2022-11-23 13:55:19,253 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/data/ceee78103/f7327218b6da468eb78ea01d86714cb9/FLAGe57ac7eee [2022-11-23 13:55:19,279 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/data/ceee78103/f7327218b6da468eb78ea01d86714cb9 [2022-11-23 13:55:19,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:55:19,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:55:19,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:55:19,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:55:19,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:55:19,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:19" (1/1) ... [2022-11-23 13:55:19,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30076476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19, skipping insertion in model container [2022-11-23 13:55:19,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:19" (1/1) ... [2022-11-23 13:55:19,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:55:19,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:55:19,858 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 13:55:20,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:55:20,561 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:55:20,581 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 13:55:20,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:55:20,786 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:55:20,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20 WrapperNode [2022-11-23 13:55:20,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:55:20,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:20,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:55:20,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:55:20,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,880 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-11-23 13:55:20,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:55:20,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:55:20,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:55:20,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:55:20,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:55:20,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:55:20,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:55:20,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:55:20,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (1/1) ... [2022-11-23 13:55:20,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:55:20,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:20,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:55:20,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:55:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 13:55:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 13:55:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 13:55:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:55:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 13:55:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:55:21,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:55:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:55:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:55:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 13:55:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 13:55:21,201 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:55:21,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:55:21,389 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:55:21,396 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:55:21,396 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 13:55:21,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:21 BoogieIcfgContainer [2022-11-23 13:55:21,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:55:21,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:55:21,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:55:21,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:55:21,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:19" (1/3) ... [2022-11-23 13:55:21,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688ee4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:21, skipping insertion in model container [2022-11-23 13:55:21,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:20" (2/3) ... [2022-11-23 13:55:21,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688ee4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:21, skipping insertion in model container [2022-11-23 13:55:21,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:21" (3/3) ... [2022-11-23 13:55:21,408 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2022-11-23 13:55:21,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:55:21,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 13:55:21,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:55:21,492 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;@735f238a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:55:21,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 13:55:21,497 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) [2022-11-23 13:55:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 13:55:21,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:21,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:21,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 13:55:21,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-11-23 13:55:21,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:55:21,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004935154] [2022-11-23 13:55:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:21,526 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 [2022-11-23 13:55:21,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:55:21,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:55:21,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:55:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:55:21,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:55:21,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:55:21,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:55:21,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:55:21,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004935154] [2022-11-23 13:55:21,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004935154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:55:21,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:55:21,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:55:21,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039858259] [2022-11-23 13:55:21,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:55:21,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:55:21,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:55:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:55:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:55:21,822 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) [2022-11-23 13:55:21,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:21,866 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-23 13:55:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:55:21,869 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 [2022-11-23 13:55:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:21,878 INFO L225 Difference]: With dead ends: 39 [2022-11-23 13:55:21,879 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 13:55:21,882 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 [2022-11-23 13:55:21,887 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 [2022-11-23 13:55:21,889 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] [2022-11-23 13:55:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 13:55:21,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 13:55:21,935 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) [2022-11-23 13:55:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-23 13:55:21,938 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-11-23 13:55:21,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:21,940 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-23 13:55:21,940 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) [2022-11-23 13:55:21,941 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-23 13:55:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 13:55:21,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:21,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:21,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:55:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:55:22,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 13:55:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-11-23 13:55:22,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:55:22,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316571211] [2022-11-23 13:55:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:22,164 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 [2022-11-23 13:55:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:55:22,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:55:22,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:55:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:55:22,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:55:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:55:22,401 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 13:55:22,401 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:55:22,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 13:55:22,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 13:55:22,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 13:55:22,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:55:22,627 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 13:55:22,630 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:55:22,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:55:22 BoogieIcfgContainer [2022-11-23 13:55:22,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:55:22,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:55:22,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:55:22,660 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:55:22,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:21" (3/4) ... [2022-11-23 13:55:22,663 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 13:55:22,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:55:22,664 INFO L158 Benchmark]: Toolchain (without parser) took 3377.18ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 49.9MB in the beginning and 60.0MB in the end (delta: -10.1MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-11-23 13:55:22,664 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 75.5MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:55:22,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1497.76ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 49.7MB in the beginning and 64.7MB in the end (delta: -15.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-11-23 13:55:22,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.20ms. Allocated memory is still 94.4MB. Free memory was 64.7MB in the beginning and 61.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:55:22,666 INFO L158 Benchmark]: Boogie Preprocessor took 41.97ms. Allocated memory is still 94.4MB. Free memory was 61.8MB in the beginning and 59.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:55:22,667 INFO L158 Benchmark]: RCFGBuilder took 474.16ms. Allocated memory is still 94.4MB. Free memory was 59.7MB in the beginning and 45.8MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 13:55:22,667 INFO L158 Benchmark]: TraceAbstraction took 1257.61ms. Allocated memory is still 94.4MB. Free memory was 44.9MB in the beginning and 60.4MB in the end (delta: -15.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:55:22,668 INFO L158 Benchmark]: Witness Printer took 4.20ms. Allocated memory is still 94.4MB. Free memory was 60.4MB in the beginning and 60.0MB in the end (delta: 496.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:55:22,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 75.5MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1497.76ms. Allocated memory was 75.5MB in the beginning and 94.4MB in the end (delta: 18.9MB). Free memory was 49.7MB in the beginning and 64.7MB in the end (delta: -15.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.20ms. Allocated memory is still 94.4MB. Free memory was 64.7MB in the beginning and 61.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.97ms. Allocated memory is still 94.4MB. Free memory was 61.8MB in the beginning and 59.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 474.16ms. Allocated memory is still 94.4MB. Free memory was 59.7MB in the beginning and 45.8MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1257.61ms. Allocated memory is still 94.4MB. Free memory was 44.9MB in the beginning and 60.4MB in the end (delta: -15.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.20ms. Allocated memory is still 94.4MB. Free memory was 60.4MB in the beginning and 60.0MB in the end (delta: 496.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=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, unknown-#in~argc-unknown=12] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_14_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE globalFive==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE globalFive==5 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] [L1569] data - 1 VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 47 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 [2022-11-23 13:55:22,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9770985a-dd5e-4b62-9459-f1f6d7de3146/bin/utaipan-Q6hlc19bkW/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