./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur --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 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb --- 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-38b53e6 [2022-11-26 01:02:59,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:02:59,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:02:59,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:02:59,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:02:59,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:02:59,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:02:59,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:02:59,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:02:59,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:02:59,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:02:59,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:02:59,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:02:59,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:02:59,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:02:59,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:02:59,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:02:59,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:02:59,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:02:59,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:02:59,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:02:59,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:02:59,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:02:59,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:02:59,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:02:59,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:02:59,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:02:59,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:02:59,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:02:59,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:02:59,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:02:59,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:02:59,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:02:59,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:02:59,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:02:59,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:02:59,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:02:59,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:02:59,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:02:59,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:02:59,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:02:59,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 01:02:59,356 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:02:59,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:02:59,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:02:59,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:02:59,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:02:59,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:02:59,359 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:02:59,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:02:59,360 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:02:59,360 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:02:59,361 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:02:59,362 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:02:59,362 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:02:59,362 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:02:59,362 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:02:59,363 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:02:59,363 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:02:59,363 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:02:59,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:02:59,364 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:02:59,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:02:59,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:02:59,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:02:59,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:02:59,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:02:59,366 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 01:02:59,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:02:59,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:02:59,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:02:59,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:02:59,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:02:59,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:02:59,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:02:59,369 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:02:59,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:02:59,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:02:59,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:02:59,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:02:59,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:02:59,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:02:59,370 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_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb [2022-11-26 01:02:59,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:02:59,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:02:59,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:02:59,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:02:59,687 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:02:59,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-11-26 01:03:02,708 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:03:03,085 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:03:03,085 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-11-26 01:03:03,116 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/data/6c1dbf390/f60c4ee8e78e44c494bfd7bd4fbf1f32/FLAGe3f32be3c [2022-11-26 01:03:03,132 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/data/6c1dbf390/f60c4ee8e78e44c494bfd7bd4fbf1f32 [2022-11-26 01:03:03,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:03:03,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:03:03,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:03,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:03:03,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:03:03,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:03" (1/1) ... [2022-11-26 01:03:03,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb8d7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:03, skipping insertion in model container [2022-11-26 01:03:03,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:03" (1/1) ... [2022-11-26 01:03:03,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:03:03,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:03:03,650 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 01:03:04,117 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:03:04,123 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:03:04,125 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:03:04,157 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:03:04,159 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:03:04,191 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 01:03:04,200 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 01:03:04,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:04,220 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:03:04,258 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 01:03:04,345 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:03:04,349 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:03:04,351 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:03:04,356 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:03:04,359 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:03:04,363 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 01:03:04,374 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 01:03:04,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:04,516 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:03:04,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04 WrapperNode [2022-11-26 01:03:04,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:04,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:04,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:03:04,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:03:04,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,596 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-11-26 01:03:04,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:04,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:03:04,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:03:04,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:03:04,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,624 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:03:04,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:03:04,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:03:04,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:03:04,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (1/1) ... [2022-11-26 01:03:04,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:04,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:04,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:03:04,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:03:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 01:03:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 01:03:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 01:03:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:03:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 01:03:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:03:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:03:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:03:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:03:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 01:03:04,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:03:04,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:03:04,956 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:03:05,111 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:03:05,165 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:03:05,165 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:03:05,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:05 BoogieIcfgContainer [2022-11-26 01:03:05,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:03:05,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:03:05,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:03:05,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:03:05,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:03:03" (1/3) ... [2022-11-26 01:03:05,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483023b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:03:05, skipping insertion in model container [2022-11-26 01:03:05,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:04" (2/3) ... [2022-11-26 01:03:05,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483023b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:03:05, skipping insertion in model container [2022-11-26 01:03:05,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:05" (3/3) ... [2022-11-26 01:03:05,185 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-11-26 01:03:05,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:03:05,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 01:03:05,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:03:05,269 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;@274df5af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:03:05,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 01:03:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 01:03:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:03:05,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:05,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:05,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 01:03:05,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1525281585, now seen corresponding path program 1 times [2022-11-26 01:03:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:03:05,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530036963] [2022-11-26 01:03:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:03:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:03:05,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:03:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:03:05,605 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:03:05,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:03:05,610 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 01:03:05,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 01:03:05,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:03:05,619 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 01:03:05,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:03:05,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:03:05 BoogieIcfgContainer [2022-11-26 01:03:05,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:03:05,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:03:05,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:03:05,663 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:03:05,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:05" (3/4) ... [2022-11-26 01:03:05,668 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:03:05,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:03:05,670 INFO L158 Benchmark]: Toolchain (without parser) took 2529.39ms. Allocated memory was 134.2MB in the beginning and 167.8MB in the end (delta: 33.6MB). Free memory was 68.8MB in the beginning and 119.5MB in the end (delta: -50.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:05,671 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 134.2MB. Free memory was 105.2MB in the beginning and 105.1MB in the end (delta: 91.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:05,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1374.60ms. Allocated memory was 134.2MB in the beginning and 167.8MB in the end (delta: 33.6MB). Free memory was 68.6MB in the beginning and 92.8MB in the end (delta: -24.3MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2022-11-26 01:03:05,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.74ms. Allocated memory is still 167.8MB. Free memory was 92.8MB in the beginning and 89.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:03:05,678 INFO L158 Benchmark]: Boogie Preprocessor took 41.96ms. Allocated memory is still 167.8MB. Free memory was 89.9MB in the beginning and 88.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:05,679 INFO L158 Benchmark]: RCFGBuilder took 531.51ms. Allocated memory is still 167.8MB. Free memory was 87.9MB in the beginning and 74.0MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 01:03:05,680 INFO L158 Benchmark]: TraceAbstraction took 486.59ms. Allocated memory is still 167.8MB. Free memory was 73.2MB in the beginning and 119.5MB in the end (delta: -46.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:05,681 INFO L158 Benchmark]: Witness Printer took 6.20ms. Allocated memory is still 167.8MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:05,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 134.2MB. Free memory was 105.2MB in the beginning and 105.1MB in the end (delta: 91.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1374.60ms. Allocated memory was 134.2MB in the beginning and 167.8MB in the end (delta: 33.6MB). Free memory was 68.6MB in the beginning and 92.8MB in the end (delta: -24.3MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.74ms. Allocated memory is still 167.8MB. Free memory was 92.8MB in the beginning and 89.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.96ms. Allocated memory is still 167.8MB. Free memory was 89.9MB in the beginning and 88.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 531.51ms. Allocated memory is still 167.8MB. Free memory was 87.9MB in the beginning and 74.0MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 486.59ms. Allocated memory is still 167.8MB. Free memory was 73.2MB in the beginning and 119.5MB in the end (delta: -46.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.20ms. Allocated memory is still 167.8MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1568]: 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); [L1576] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1576] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, argv={1073741828:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_18_bad() [L1550] int data; [L1551] data = 0 [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] [L1568] --data 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 01:03:05,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur --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 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb --- 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-38b53e6 [2022-11-26 01:03:08,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:03:08,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:03:08,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:03:08,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:03:08,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:03:08,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:03:08,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:03:08,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:03:08,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:03:08,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:03:08,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:03:08,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:03:08,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:03:08,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:03:08,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:03:08,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:03:08,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:03:08,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:03:08,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:03:08,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:03:08,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:03:08,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:03:08,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:03:08,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:03:08,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:03:08,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:03:08,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:03:08,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:03:08,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:03:08,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:03:08,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:03:08,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:03:08,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:03:08,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:03:08,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:03:08,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:03:08,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:03:08,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:03:08,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:03:08,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:03:08,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-26 01:03:08,369 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:03:08,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:03:08,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:03:08,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:03:08,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:03:08,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:03:08,373 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:03:08,374 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:03:08,374 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:03:08,374 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:03:08,375 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:03:08,375 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:03:08,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:03:08,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:03:08,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:03:08,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:03:08,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:03:08,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:03:08,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:03:08,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 01:03:08,378 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 01:03:08,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 01:03:08,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:03:08,379 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:03:08,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:03:08,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:03:08,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 01:03:08,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:03:08,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:08,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:03:08,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:03:08,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:03:08,381 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 01:03:08,381 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 01:03:08,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:03:08,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:03:08,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 01:03:08,382 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_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb [2022-11-26 01:03:08,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:03:08,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:03:08,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:03:08,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:03:08,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:03:08,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-11-26 01:03:11,875 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:03:12,287 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:03:12,288 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-11-26 01:03:12,311 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/data/c29c002ed/18f6b7bc350146038f0efad7a1d6a3c5/FLAGcb6f04723 [2022-11-26 01:03:12,330 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/data/c29c002ed/18f6b7bc350146038f0efad7a1d6a3c5 [2022-11-26 01:03:12,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:03:12,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:03:12,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:12,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:03:12,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:03:12,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:12" (1/1) ... [2022-11-26 01:03:12,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15031c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:12, skipping insertion in model container [2022-11-26 01:03:12,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:12" (1/1) ... [2022-11-26 01:03:12,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:03:12,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:03:12,924 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 01:03:13,731 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:03:13,737 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:03:13,740 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:03:13,743 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:03:13,744 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:03:13,764 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 01:03:13,769 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 01:03:13,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:13,784 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:03:13,802 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 01:03:13,842 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:03:13,848 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:03:13,849 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:03:13,854 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:03:13,855 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:03:13,859 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 01:03:13,866 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 01:03:13,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:13,999 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:03:13,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13 WrapperNode [2022-11-26 01:03:13,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:14,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:14,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:03:14,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:03:14,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,057 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-26 01:03:14,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:14,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:03:14,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:03:14,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:03:14,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,085 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:03:14,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:03:14,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:03:14,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:03:14,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (1/1) ... [2022-11-26 01:03:14,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:14,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:14,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:03:14,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:03:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 01:03:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 01:03:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 01:03:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:03:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 01:03:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:03:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:03:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:03:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:03:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 01:03:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-26 01:03:14,396 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:03:14,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:03:14,614 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:03:14,620 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:03:14,620 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:03:14,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:14 BoogieIcfgContainer [2022-11-26 01:03:14,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:03:14,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:03:14,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:03:14,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:03:14,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:03:12" (1/3) ... [2022-11-26 01:03:14,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11692113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:03:14, skipping insertion in model container [2022-11-26 01:03:14,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:13" (2/3) ... [2022-11-26 01:03:14,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11692113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:03:14, skipping insertion in model container [2022-11-26 01:03:14,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:14" (3/3) ... [2022-11-26 01:03:14,640 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-11-26 01:03:14,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:03:14,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 01:03:14,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:03:14,730 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;@4abeb6d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:03:14,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 01:03:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-11-26 01:03:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 01:03:14,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:14,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:03:14,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 01:03:14,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 924028237, now seen corresponding path program 1 times [2022-11-26 01:03:14,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:03:14,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018282814] [2022-11-26 01:03:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:14,769 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 [2022-11-26 01:03:14,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:03:14,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/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) [2022-11-26 01:03:14,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:03:14,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:03:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:03:15,081 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 01:03:15,087 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:03:15,088 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 01:03:15,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 01:03:15,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:15,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/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 [2022-11-26 01:03:15,304 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 01:03:15,308 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:03:15,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:03:15 BoogieIcfgContainer [2022-11-26 01:03:15,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:03:15,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:03:15,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:03:15,349 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:03:15,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:03:14" (3/4) ... [2022-11-26 01:03:15,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:03:15,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:03:15,354 INFO L158 Benchmark]: Toolchain (without parser) took 3020.09ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 63.1MB in the beginning and 78.9MB in the end (delta: -15.7MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2022-11-26 01:03:15,355 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 62.9MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:15,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1663.87ms. Allocated memory is still 88.1MB. Free memory was 63.1MB in the beginning and 44.7MB in the end (delta: 18.4MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2022-11-26 01:03:15,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.65ms. Allocated memory is still 88.1MB. Free memory was 44.7MB in the beginning and 41.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:03:15,357 INFO L158 Benchmark]: Boogie Preprocessor took 32.68ms. Allocated memory is still 88.1MB. Free memory was 41.3MB in the beginning and 39.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:03:15,357 INFO L158 Benchmark]: RCFGBuilder took 531.07ms. Allocated memory is still 88.1MB. Free memory was 39.2MB in the beginning and 51.4MB in the end (delta: -12.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-11-26 01:03:15,358 INFO L158 Benchmark]: TraceAbstraction took 719.30ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 51.0MB in the beginning and 79.4MB in the end (delta: -28.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 01:03:15,359 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 107.0MB. Free memory was 79.4MB in the beginning and 78.9MB in the end (delta: 593.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:03:15,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 62.9MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1663.87ms. Allocated memory is still 88.1MB. Free memory was 63.1MB in the beginning and 44.7MB in the end (delta: 18.4MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.65ms. Allocated memory is still 88.1MB. Free memory was 44.7MB in the beginning and 41.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.68ms. Allocated memory is still 88.1MB. Free memory was 41.3MB in the beginning and 39.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 531.07ms. Allocated memory is still 88.1MB. Free memory was 39.2MB in the beginning and 51.4MB in the end (delta: -12.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * TraceAbstraction took 719.30ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 51.0MB in the beginning and 79.4MB in the end (delta: -28.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 107.0MB. Free memory was 79.4MB in the beginning and 78.9MB in the end (delta: 593.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1568]: 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] [L1576] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1576] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_18_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] [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] [L1568] --data 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: 1568]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 01:03:15,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e43cce75-6f43-406a-ad4a-175e0ddf427e/bin/utaipan-ByfvJB40ur/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