./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dddfccd8da9f12f34e194b4a9fc4c4f6991db16bc01a02bc13eca415e127610f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:07:03,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:07:03,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:07:03,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:07:03,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:07:03,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:07:03,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:07:03,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:07:03,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:07:03,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:07:03,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:07:03,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:07:03,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:07:03,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:07:03,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:07:03,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:07:03,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:07:03,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:07:03,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:07:03,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:07:03,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:07:03,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:07:03,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:07:03,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:07:03,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:07:03,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:07:03,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:07:03,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:07:03,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:07:03,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:07:03,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:07:03,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:07:03,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:07:03,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:07:03,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:07:03,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:07:03,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:07:03,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:07:03,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:07:03,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:07:03,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:07:03,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 06:07:03,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:07:03,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:07:03,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:07:03,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:07:03,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:07:03,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:07:03,348 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:07:03,348 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:07:03,348 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:07:03,349 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:07:03,349 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:07:03,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:07:03,349 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:07:03,349 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:07:03,349 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:07:03,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:07:03,350 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:07:03,350 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:07:03,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:07:03,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:07:03,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:07:03,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:07:03,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:07:03,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:07:03,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:07:03,351 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:07:03,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:07:03,352 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:07:03,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:07:03,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:07:03,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:07:03,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:07:03,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:07:03,353 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:07:03,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:07:03,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:07:03,353 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:07:03,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:07:03,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:07:03,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:07:03,353 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_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dddfccd8da9f12f34e194b4a9fc4c4f6991db16bc01a02bc13eca415e127610f [2022-12-14 06:07:03,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:07:03,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:07:03,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:07:03,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:07:03,560 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:07:03,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i [2022-12-14 06:07:06,092 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:07:06,317 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:07:06,317 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i [2022-12-14 06:07:06,330 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/data/5f760f25a/15cf00e0f53649ba8b8b21091e348a37/FLAGf648d0b43 [2022-12-14 06:07:06,659 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/data/5f760f25a/15cf00e0f53649ba8b8b21091e348a37 [2022-12-14 06:07:06,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:07:06,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:07:06,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:07:06,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:07:06,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:07:06,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:07:06" (1/1) ... [2022-12-14 06:07:06,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5809de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:06, skipping insertion in model container [2022-12-14 06:07:06,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:07:06" (1/1) ... [2022-12-14 06:07:06,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:07:06,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:07:06,986 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:07:07,308 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:07:07,313 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:07:07,314 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:07:07,317 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:07:07,317 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:07:07,336 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:07:07,343 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:07:07,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:07:07,354 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:07:07,370 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:07:07,414 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:07:07,416 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:07:07,417 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:07:07,419 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:07:07,420 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:07:07,424 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:07:07,427 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:07:07,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:07:07,551 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:07:07,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07 WrapperNode [2022-12-14 06:07:07,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:07:07,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:07:07,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:07:07,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:07:07,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,600 INFO L138 Inliner]: procedures = 500, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2022-12-14 06:07:07,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:07:07,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:07:07,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:07:07,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:07:07,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:07:07,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:07:07,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:07:07,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:07:07,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (1/1) ... [2022-12-14 06:07:07,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:07:07,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:07:07,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:07:07,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:07:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-12-14 06:07:07,691 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-12-14 06:07:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 06:07:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2022-12-14 06:07:07,691 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2022-12-14 06:07:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 06:07:07,691 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 06:07:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:07:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 06:07:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:07:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:07:07,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:07:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:07:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 06:07:07,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:07:07,790 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:07:07,792 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:07:07,911 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:07:07,937 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:07:07,937 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:07:07,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:07:07 BoogieIcfgContainer [2022-12-14 06:07:07,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:07:07,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:07:07,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:07:07,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:07:07,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:07:06" (1/3) ... [2022-12-14 06:07:07,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a1efe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:07:07, skipping insertion in model container [2022-12-14 06:07:07,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:07" (2/3) ... [2022-12-14 06:07:07,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a1efe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:07:07, skipping insertion in model container [2022-12-14 06:07:07,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:07:07" (3/3) ... [2022-12-14 06:07:07,948 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i [2022-12-14 06:07:07,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:07:07,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 06:07:07,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:07:08,004 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;@44e2de39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:07:08,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 06:07:08,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 20 states have (on average 1.5) internal successors, (30), 28 states have internal predecessors, (30), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 06:07:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 06:07:08,012 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:07:08,012 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:07:08,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 06:07:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:07:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash -560423017, now seen corresponding path program 1 times [2022-12-14 06:07:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:07:08,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105916282] [2022-12-14 06:07:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:07:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:07:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:07:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 06:07:08,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:07:08,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105916282] [2022-12-14 06:07:08,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105916282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:07:08,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:07:08,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:07:08,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150477074] [2022-12-14 06:07:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:07:08,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:07:08,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:07:08,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:07:08,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:07:08,275 INFO L87 Difference]: Start difference. First operand has 36 states, 20 states have (on average 1.5) internal successors, (30), 28 states have internal predecessors, (30), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 06:07:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:07:08,342 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-12-14 06:07:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:07:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2022-12-14 06:07:08,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:07:08,351 INFO L225 Difference]: With dead ends: 62 [2022-12-14 06:07:08,351 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 06:07:08,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:07:08,357 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:07:08,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 72 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:07:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 06:07:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-12-14 06:07:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 06:07:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-12-14 06:07:08,390 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 17 [2022-12-14 06:07:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:07:08,391 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-12-14 06:07:08,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 06:07:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-12-14 06:07:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 06:07:08,392 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:07:08,392 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:07:08,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:07:08,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 06:07:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:07:08,393 INFO L85 PathProgramCache]: Analyzing trace with hash -193244269, now seen corresponding path program 1 times [2022-12-14 06:07:08,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:07:08,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872566607] [2022-12-14 06:07:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:07:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:07:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:07:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 06:07:08,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:07:08,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872566607] [2022-12-14 06:07:08,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872566607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:07:08,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:07:08,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:07:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475678074] [2022-12-14 06:07:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:07:08,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:07:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:07:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:07:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:07:08,452 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 06:07:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:07:08,478 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-12-14 06:07:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:07:08,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2022-12-14 06:07:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:07:08,479 INFO L225 Difference]: With dead ends: 48 [2022-12-14 06:07:08,480 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 06:07:08,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:07:08,481 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:07:08,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 46 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:07:08,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 06:07:08,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-12-14 06:07:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 06:07:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-12-14 06:07:08,486 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 18 [2022-12-14 06:07:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:07:08,486 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-12-14 06:07:08,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 06:07:08,487 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-12-14 06:07:08,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 06:07:08,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:07:08,487 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:07:08,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:07:08,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 06:07:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:07:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash 320893692, now seen corresponding path program 1 times [2022-12-14 06:07:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:07:08,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949263367] [2022-12-14 06:07:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:07:08,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:07:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:07:08,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:07:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:07:08,545 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 06:07:08,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:07:08,546 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 06:07:08,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 06:07:08,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 06:07:08,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 06:07:08,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:07:08,551 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 06:07:08,553 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:07:08,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:07:08 BoogieIcfgContainer [2022-12-14 06:07:08,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:07:08,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:07:08,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:07:08,572 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:07:08,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:07:07" (3/4) ... [2022-12-14 06:07:08,575 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 06:07:08,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:07:08,575 INFO L158 Benchmark]: Toolchain (without parser) took 1913.63ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 87.6MB in the beginning and 84.5MB in the end (delta: 3.1MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2022-12-14 06:07:08,576 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:07:08,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 889.86ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 87.2MB in the beginning and 99.4MB in the end (delta: -12.2MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2022-12-14 06:07:08,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.38ms. Allocated memory is still 151.0MB. Free memory was 99.4MB in the beginning and 96.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:07:08,577 INFO L158 Benchmark]: Boogie Preprocessor took 25.52ms. Allocated memory is still 151.0MB. Free memory was 96.4MB in the beginning and 94.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:07:08,577 INFO L158 Benchmark]: RCFGBuilder took 312.84ms. Allocated memory is still 151.0MB. Free memory was 94.4MB in the beginning and 78.4MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 06:07:08,577 INFO L158 Benchmark]: TraceAbstraction took 629.28ms. Allocated memory is still 151.0MB. Free memory was 77.6MB in the beginning and 85.6MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:07:08,578 INFO L158 Benchmark]: Witness Printer took 3.10ms. Allocated memory is still 151.0MB. Free memory was 85.6MB in the beginning and 84.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:07:08,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 889.86ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 87.2MB in the beginning and 99.4MB in the end (delta: -12.2MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.38ms. Allocated memory is still 151.0MB. Free memory was 99.4MB in the beginning and 96.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.52ms. Allocated memory is still 151.0MB. Free memory was 96.4MB in the beginning and 94.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 312.84ms. Allocated memory is still 151.0MB. Free memory was 94.4MB in the beginning and 78.4MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 629.28ms. Allocated memory is still 151.0MB. Free memory was 77.6MB in the beginning and 85.6MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.10ms. Allocated memory is still 151.0MB. Free memory was 85.6MB in the beginning and 84.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1574]: 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); [L1597] 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={5:0}] [L1414] COND TRUE line != ((void *)0) [L1597] RET printLine("Calling bad()...") VAL [\old(argc)=1073741825, argc=1073741825, argv={1073741829:1073741827}, argv={1073741829:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1598] CALL CWE191_Integer_Underflow__int_fgets_multiply_12_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] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [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=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1572] COND TRUE data < 0 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] data * 2 VAL [data=-1073741825, 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: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1584]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1584]: 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 4 procedures, 36 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 82 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 77 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 06:07:08,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dddfccd8da9f12f34e194b4a9fc4c4f6991db16bc01a02bc13eca415e127610f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:07:10,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:07:10,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:07:10,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:07:10,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:07:10,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:07:10,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:07:10,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:07:10,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:07:10,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:07:10,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:07:10,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:07:10,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:07:10,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:07:10,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:07:10,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:07:10,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:07:10,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:07:10,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:07:10,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:07:10,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:07:10,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:07:10,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:07:10,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:07:10,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:07:10,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:07:10,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:07:10,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:07:10,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:07:10,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:07:10,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:07:10,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:07:10,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:07:10,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:07:10,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:07:10,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:07:10,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:07:10,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:07:10,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:07:10,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:07:10,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:07:10,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 06:07:10,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:07:10,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:07:10,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:07:10,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:07:10,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:07:10,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:07:10,387 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:07:10,387 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:07:10,387 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:07:10,387 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:07:10,388 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:07:10,388 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:07:10,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:07:10,388 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:07:10,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:07:10,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:07:10,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:07:10,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:07:10,389 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:07:10,389 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 06:07:10,389 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:07:10,389 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 06:07:10,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:07:10,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:07:10,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:07:10,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:07:10,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 06:07:10,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:07:10,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:07:10,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:07:10,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:07:10,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:07:10,391 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 06:07:10,391 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 06:07:10,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:07:10,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:07:10,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 06:07:10,392 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_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dddfccd8da9f12f34e194b4a9fc4c4f6991db16bc01a02bc13eca415e127610f [2022-12-14 06:07:10,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:07:10,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:07:10,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:07:10,629 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:07:10,630 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:07:10,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i [2022-12-14 06:07:13,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:07:13,501 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:07:13,502 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i [2022-12-14 06:07:13,522 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/data/2e8e111cd/ec9d502ce30a4f1385625d3c2e128790/FLAG2bb35e34a [2022-12-14 06:07:13,536 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/data/2e8e111cd/ec9d502ce30a4f1385625d3c2e128790 [2022-12-14 06:07:13,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:07:13,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:07:13,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:07:13,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:07:13,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:07:13,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:07:13" (1/1) ... [2022-12-14 06:07:13,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc8eabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:13, skipping insertion in model container [2022-12-14 06:07:13,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:07:13" (1/1) ... [2022-12-14 06:07:13,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:07:13,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:07:13,854 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:07:14,120 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:07:14,123 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:07:14,125 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:07:14,126 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:07:14,127 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:07:14,140 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:07:14,145 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:07:14,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:07:14,156 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:07:14,169 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:07:14,202 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:07:14,203 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:07:14,204 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:07:14,205 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:07:14,206 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:07:14,209 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:07:14,211 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:07:14,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:07:14,288 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:07:14,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14 WrapperNode [2022-12-14 06:07:14,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:07:14,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:07:14,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:07:14,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:07:14,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,326 INFO L138 Inliner]: procedures = 505, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-12-14 06:07:14,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:07:14,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:07:14,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:07:14,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:07:14,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,344 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:07:14,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:07:14,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:07:14,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:07:14,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (1/1) ... [2022-12-14 06:07:14,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:07:14,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:07:14,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:07:14,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:07:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-12-14 06:07:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-12-14 06:07:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 06:07:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2022-12-14 06:07:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2022-12-14 06:07:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 06:07:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 06:07:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:07:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 06:07:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:07:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:07:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:07:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:07:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 06:07:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 06:07:14,517 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:07:14,519 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:07:14,647 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:07:14,652 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:07:14,652 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:07:14,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:07:14 BoogieIcfgContainer [2022-12-14 06:07:14,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:07:14,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:07:14,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:07:14,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:07:14,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:07:13" (1/3) ... [2022-12-14 06:07:14,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7d67b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:07:14, skipping insertion in model container [2022-12-14 06:07:14,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:07:14" (2/3) ... [2022-12-14 06:07:14,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7d67b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:07:14, skipping insertion in model container [2022-12-14 06:07:14,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:07:14" (3/3) ... [2022-12-14 06:07:14,659 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_12_bad.i [2022-12-14 06:07:14,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:07:14,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 06:07:14,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:07:14,710 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;@7b7a69b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:07:14,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 06:07:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 33 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 06:07:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 06:07:14,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:07:14,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:07:14,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 06:07:14,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:07:14,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1846737014, now seen corresponding path program 1 times [2022-12-14 06:07:14,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:07:14,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349742663] [2022-12-14 06:07:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:07:14,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:07:14,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:07:14,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:07:14,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 06:07:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:07:14,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 06:07:14,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:07:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 06:07:14,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:07:14,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:07:14,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349742663] [2022-12-14 06:07:14,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349742663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:07:14,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:07:14,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:07:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83200771] [2022-12-14 06:07:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:07:14,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:07:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:07:14,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:07:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:07:14,939 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 33 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 06:07:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:07:15,009 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-12-14 06:07:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:07:15,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2022-12-14 06:07:15,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:07:15,017 INFO L225 Difference]: With dead ends: 73 [2022-12-14 06:07:15,017 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 06:07:15,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:07:15,021 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:07:15,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:07:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 06:07:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 06:07:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.263157894736842) internal successors, (24), 23 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 06:07:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-12-14 06:07:15,048 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2022-12-14 06:07:15,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:07:15,049 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-12-14 06:07:15,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 06:07:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-12-14 06:07:15,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 06:07:15,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:07:15,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:07:15,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:07:15,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:07:15,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 06:07:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:07:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash -381285297, now seen corresponding path program 1 times [2022-12-14 06:07:15,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:07:15,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173561640] [2022-12-14 06:07:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:07:15,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:07:15,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:07:15,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:07:15,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 06:07:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:07:15,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:07:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:07:15,521 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 06:07:15,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:07:15,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 06:07:15,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 06:07:15,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 06:07:15,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 06:07:15,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 06:07:15,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:07:15,728 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 06:07:15,731 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:07:15,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:07:15 BoogieIcfgContainer [2022-12-14 06:07:15,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:07:15,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:07:15,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:07:15,752 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:07:15,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:07:14" (3/4) ... [2022-12-14 06:07:15,754 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 06:07:15,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:07:15,755 INFO L158 Benchmark]: Toolchain (without parser) took 2214.60ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 65.7MB in the beginning and 82.7MB in the end (delta: -17.1MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-12-14 06:07:15,755 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory is still 32.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:07:15,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 746.58ms. Allocated memory is still 109.1MB. Free memory was 65.7MB in the beginning and 55.3MB in the end (delta: 10.4MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2022-12-14 06:07:15,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.24ms. Allocated memory is still 109.1MB. Free memory was 54.8MB in the beginning and 52.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 06:07:15,756 INFO L158 Benchmark]: Boogie Preprocessor took 20.86ms. Allocated memory is still 109.1MB. Free memory was 52.1MB in the beginning and 49.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:07:15,757 INFO L158 Benchmark]: RCFGBuilder took 305.39ms. Allocated memory is still 109.1MB. Free memory was 49.6MB in the beginning and 69.8MB in the end (delta: -20.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 06:07:15,757 INFO L158 Benchmark]: TraceAbstraction took 1096.11ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 68.9MB in the beginning and 83.5MB in the end (delta: -14.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-12-14 06:07:15,757 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 132.1MB. Free memory was 83.5MB in the beginning and 82.7MB in the end (delta: 781.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:07:15,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory is still 32.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 746.58ms. Allocated memory is still 109.1MB. Free memory was 65.7MB in the beginning and 55.3MB in the end (delta: 10.4MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.24ms. Allocated memory is still 109.1MB. Free memory was 54.8MB in the beginning and 52.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.86ms. Allocated memory is still 109.1MB. Free memory was 52.1MB in the beginning and 49.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.39ms. Allocated memory is still 109.1MB. Free memory was 49.6MB in the beginning and 69.8MB in the end (delta: -20.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1096.11ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 68.9MB in the beginning and 83.5MB in the end (delta: -14.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 132.1MB. Free memory was 83.5MB in the beginning and 82.7MB in the end (delta: 781.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1574]: 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] [L1597] 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={5:0}] [L1414] COND TRUE line != ((void *)0) [L1597] 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] [L1598] CALL CWE191_Integer_Underflow__int_fgets_multiply_12_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] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [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] [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1572] COND TRUE data < 0 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] [L1574] 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] - UnprovableResult [Line: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1584]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1584]: 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 4 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 51 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 06:07:15,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58846bbe-917b-4c05-b376-6f94a58db019/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample