./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_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_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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_315ccad9-a111-4f02-ad3f-fe250a71017a/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 8d9d1a0fafec05324327623425bba944144beaa272ae23d2023290f81e81057c --- 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 07:57:35,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:57:35,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:57:35,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:57:35,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:57:35,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:57:35,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:57:35,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:57:35,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:57:35,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:57:35,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:57:35,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:57:35,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:57:35,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:57:35,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:57:35,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:57:35,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:57:35,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:57:35,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:57:35,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:57:35,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:57:35,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:57:35,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:57:35,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:57:35,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:57:35,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:57:35,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:57:35,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:57:35,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:57:35,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:57:35,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:57:35,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:57:35,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:57:35,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:57:35,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:57:35,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:57:35,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:57:35,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:57:35,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:57:35,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:57:35,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:57:35,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 07:57:35,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:57:35,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:57:35,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:57:35,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:57:35,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:57:35,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:57:35,481 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:57:35,482 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:57:35,482 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:57:35,482 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:57:35,482 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:57:35,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:57:35,483 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:57:35,483 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:57:35,483 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:57:35,483 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:57:35,483 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:57:35,483 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:57:35,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:57:35,484 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:57:35,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:57:35,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:57:35,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:57:35,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:57:35,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:57:35,485 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:57:35,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:57:35,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:57:35,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:57:35,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:57:35,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:57:35,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:57:35,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:57:35,486 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:57:35,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:57:35,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:57:35,487 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:57:35,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:57:35,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:57:35,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:57:35,487 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_315ccad9-a111-4f02-ad3f-fe250a71017a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d9d1a0fafec05324327623425bba944144beaa272ae23d2023290f81e81057c [2022-12-14 07:57:35,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:57:35,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:57:35,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:57:35,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:57:35,698 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:57:35,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-12-14 07:57:38,331 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:57:38,530 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:57:38,530 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-12-14 07:57:38,543 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/data/ec68ee259/c99c93ec09ea48408d03b77557806013/FLAGfedb1e85f [2022-12-14 07:57:38,553 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/data/ec68ee259/c99c93ec09ea48408d03b77557806013 [2022-12-14 07:57:38,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:57:38,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:57:38,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:57:38,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:57:38,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:57:38,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:57:38" (1/1) ... [2022-12-14 07:57:38,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2427be8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:38, skipping insertion in model container [2022-12-14 07:57:38,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:57:38" (1/1) ... [2022-12-14 07:57:38,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:57:38,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:57:38,832 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 07:57:39,137 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:57:39,141 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:57:39,143 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:57:39,144 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:57:39,145 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:57:39,161 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 07:57:39,165 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 07:57:39,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:57:39,174 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:57:39,187 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 07:57:39,219 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:57:39,220 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:57:39,221 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:57:39,222 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:57:39,223 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:57:39,226 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 07:57:39,227 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 07:57:39,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:57:39,357 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:57:39,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39 WrapperNode [2022-12-14 07:57:39,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:57:39,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:57:39,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:57:39,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:57:39,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,402 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 07:57:39,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:57:39,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:57:39,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:57:39,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:57:39,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,423 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:57:39,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:57:39,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:57:39,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:57:39,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (1/1) ... [2022-12-14 07:57:39,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:57:39,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:57:39,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:57:39,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:57:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 07:57:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 07:57:39,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 07:57:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:57:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 07:57:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:57:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:57:39,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:57:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:57:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 07:57:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:57:39,601 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:57:39,602 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:57:39,718 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:57:39,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:57:39,743 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:57:39,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:39 BoogieIcfgContainer [2022-12-14 07:57:39,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:57:39,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:57:39,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:57:39,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:57:39,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:57:38" (1/3) ... [2022-12-14 07:57:39,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236ac3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:57:39, skipping insertion in model container [2022-12-14 07:57:39,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:39" (2/3) ... [2022-12-14 07:57:39,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236ac3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:57:39, skipping insertion in model container [2022-12-14 07:57:39,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:39" (3/3) ... [2022-12-14 07:57:39,754 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-12-14 07:57:39,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:57:39,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 07:57:39,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:57:39,821 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;@25aae87b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:57:39,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 07:57:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 07:57:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 07:57:39,832 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:57:39,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:57:39,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:57:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:57:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash 805598275, now seen corresponding path program 1 times [2022-12-14 07:57:39,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:57:39,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150285195] [2022-12-14 07:57:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:57:39,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:57:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:57:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:57:40,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:57:40,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150285195] [2022-12-14 07:57:40,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150285195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:57:40,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:57:40,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:57:40,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16365655] [2022-12-14 07:57:40,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:57:40,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:57:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:57:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:57:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:57:40,062 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:57:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:57:40,093 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-12-14 07:57:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:57:40,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-12-14 07:57:40,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:57:40,099 INFO L225 Difference]: With dead ends: 31 [2022-12-14 07:57:40,100 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 07:57:40,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:57:40,104 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:57:40,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:57:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 07:57:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 07:57:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:57:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-12-14 07:57:40,128 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-12-14 07:57:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:57:40,129 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-12-14 07:57:40,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:57:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-12-14 07:57:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 07:57:40,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:57:40,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:57:40,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:57:40,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:57:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:57:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash 789107816, now seen corresponding path program 1 times [2022-12-14 07:57:40,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:57:40,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887405182] [2022-12-14 07:57:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:57:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:57:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:57:40,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:57:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:57:40,199 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:57:40,200 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:57:40,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 07:57:40,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 07:57:40,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:57:40,212 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 07:57:40,215 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:57:40,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:57:40 BoogieIcfgContainer [2022-12-14 07:57:40,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:57:40,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:57:40,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:57:40,231 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:57:40,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:39" (3/4) ... [2022-12-14 07:57:40,233 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 07:57:40,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:57:40,234 INFO L158 Benchmark]: Toolchain (without parser) took 1677.87ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 86.9MB in the beginning and 134.9MB in the end (delta: -48.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:57:40,234 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 100.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:57:40,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 800.70ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 86.9MB in the beginning and 121.9MB in the end (delta: -35.0MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. [2022-12-14 07:57:40,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.50ms. Allocated memory is still 172.0MB. Free memory was 121.9MB in the beginning and 118.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 07:57:40,236 INFO L158 Benchmark]: Boogie Preprocessor took 22.94ms. Allocated memory is still 172.0MB. Free memory was 118.6MB in the beginning and 117.7MB in the end (delta: 926.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:57:40,236 INFO L158 Benchmark]: RCFGBuilder took 318.89ms. Allocated memory is still 172.0MB. Free memory was 117.7MB in the beginning and 103.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 07:57:40,236 INFO L158 Benchmark]: TraceAbstraction took 481.92ms. Allocated memory is still 172.0MB. Free memory was 101.8MB in the beginning and 136.0MB in the end (delta: -34.2MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2022-12-14 07:57:40,237 INFO L158 Benchmark]: Witness Printer took 2.92ms. Allocated memory is still 172.0MB. Free memory was 136.0MB in the beginning and 134.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:57:40,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 100.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 800.70ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 86.9MB in the beginning and 121.9MB in the end (delta: -35.0MB). Peak memory consumption was 59.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.50ms. Allocated memory is still 172.0MB. Free memory was 121.9MB in the beginning and 118.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.94ms. Allocated memory is still 172.0MB. Free memory was 118.6MB in the beginning and 117.7MB in the end (delta: 926.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 318.89ms. Allocated memory is still 172.0MB. Free memory was 117.7MB in the beginning and 103.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 481.92ms. Allocated memory is still 172.0MB. Free memory was 101.8MB in the beginning and 136.0MB in the end (delta: -34.2MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Witness Printer took 2.92ms. Allocated memory is still 172.0MB. Free memory was 136.0MB in the beginning and 134.9MB 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: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int staticFive = 5; [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}, staticFive=5] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_multiply_07_bad() [L1551] int data; [L1552] 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, staticFive=5] [L1553] COND TRUE staticFive==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] 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, staticFive=5] [L1567] COND TRUE staticFive==5 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, staticFive=5] [L1569] 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, staticFive=5] [L1571] 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, staticFive=5] - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 16 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 07:57:40,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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_315ccad9-a111-4f02-ad3f-fe250a71017a/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 8d9d1a0fafec05324327623425bba944144beaa272ae23d2023290f81e81057c --- 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 07:57:42,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:57:42,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:57:42,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:57:42,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:57:42,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:57:42,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:57:42,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:57:42,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:57:42,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:57:42,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:57:42,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:57:42,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:57:42,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:57:42,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:57:42,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:57:42,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:57:42,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:57:42,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:57:42,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:57:42,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:57:42,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:57:42,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:57:42,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:57:42,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:57:42,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:57:42,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:57:42,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:57:42,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:57:42,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:57:42,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:57:42,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:57:42,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:57:42,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:57:42,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:57:42,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:57:42,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:57:42,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:57:42,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:57:42,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:57:42,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:57:42,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 07:57:42,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:57:42,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:57:42,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:57:42,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:57:42,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:57:42,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:57:42,112 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:57:42,112 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:57:42,113 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:57:42,113 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:57:42,113 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:57:42,113 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:57:42,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:57:42,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:57:42,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:57:42,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:57:42,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:57:42,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:57:42,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:57:42,115 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 07:57:42,115 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:57:42,115 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 07:57:42,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:57:42,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:57:42,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:57:42,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:57:42,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 07:57:42,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:57:42,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:57:42,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:57:42,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:57:42,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:57:42,117 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 07:57:42,117 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 07:57:42,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:57:42,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:57:42,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 07:57:42,118 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_315ccad9-a111-4f02-ad3f-fe250a71017a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d9d1a0fafec05324327623425bba944144beaa272ae23d2023290f81e81057c [2022-12-14 07:57:42,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:57:42,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:57:42,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:57:42,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:57:42,367 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:57:42,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-12-14 07:57:44,973 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:57:45,230 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:57:45,231 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-12-14 07:57:45,249 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/data/413d43fe6/b1936d2c88074637bb867ac2781d19e4/FLAGb93c4a3aa [2022-12-14 07:57:45,263 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/data/413d43fe6/b1936d2c88074637bb867ac2781d19e4 [2022-12-14 07:57:45,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:57:45,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:57:45,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:57:45,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:57:45,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:57:45,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:57:45" (1/1) ... [2022-12-14 07:57:45,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6e694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:45, skipping insertion in model container [2022-12-14 07:57:45,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:57:45" (1/1) ... [2022-12-14 07:57:45,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:57:45,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:57:45,604 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 07:57:45,949 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:57:45,954 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:57:45,956 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:57:45,958 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:57:45,958 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:57:45,980 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 07:57:45,986 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 07:57:45,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:57:46,002 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:57:46,018 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 07:57:46,067 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:57:46,068 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:57:46,070 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:57:46,072 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:57:46,072 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:57:46,077 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 07:57:46,079 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 07:57:46,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:57:46,203 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:57:46,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46 WrapperNode [2022-12-14 07:57:46,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:57:46,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:57:46,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:57:46,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:57:46,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,240 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-12-14 07:57:46,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:57:46,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:57:46,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:57:46,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:57:46,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,257 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:57:46,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:57:46,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:57:46,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:57:46,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (1/1) ... [2022-12-14 07:57:46,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:57:46,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:57:46,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:57:46,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:57:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 07:57:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 07:57:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 07:57:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:57:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 07:57:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:57:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:57:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:57:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:57:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 07:57:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 07:57:46,443 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:57:46,444 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:57:46,567 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:57:46,573 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:57:46,573 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:57:46,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:46 BoogieIcfgContainer [2022-12-14 07:57:46,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:57:46,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:57:46,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:57:46,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:57:46,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:57:45" (1/3) ... [2022-12-14 07:57:46,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a5a5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:57:46, skipping insertion in model container [2022-12-14 07:57:46,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:46" (2/3) ... [2022-12-14 07:57:46,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a5a5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:57:46, skipping insertion in model container [2022-12-14 07:57:46,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:46" (3/3) ... [2022-12-14 07:57:46,583 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-12-14 07:57:46,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:57:46,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 07:57:46,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:57:46,637 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;@30ca636e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:57:46,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 07:57:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 07:57:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:57:46,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:57:46,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:57:46,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:57:46,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:57:46,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1426013167, now seen corresponding path program 1 times [2022-12-14 07:57:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:57:46,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839535855] [2022-12-14 07:57:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:57:46,673 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 07:57:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:57:46,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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 07:57:46,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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 07:57:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:57:46,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 07:57:46,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:57:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:57:46,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:57:46,814 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:57:46,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839535855] [2022-12-14 07:57:46,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839535855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:57:46,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:57:46,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:57:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597143243] [2022-12-14 07:57:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:57:46,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:57:46,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:57:46,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:57:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:57:46,853 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:57:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:57:46,882 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2022-12-14 07:57:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:57:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-12-14 07:57:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:57:46,888 INFO L225 Difference]: With dead ends: 42 [2022-12-14 07:57:46,888 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 07:57:46,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 07:57:46,892 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:57:46,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:57:46,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 07:57:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 07:57:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 07:57:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-12-14 07:57:46,916 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-12-14 07:57:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:57:46,917 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-12-14 07:57:46,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:57:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-12-14 07:57:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:57:46,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:57:46,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:57:46,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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 07:57:47,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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 07:57:47,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:57:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:57:47,122 INFO L85 PathProgramCache]: Analyzing trace with hash -600807242, now seen corresponding path program 1 times [2022-12-14 07:57:47,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:57:47,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043797475] [2022-12-14 07:57:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:57:47,125 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 07:57:47,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:57:47,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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 07:57:47,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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 07:57:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:57:47,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:57:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:57:47,387 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 07:57:47,387 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:57:47,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 07:57:47,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 07:57:47,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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 07:57:47,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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 07:57:47,600 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 07:57:47,609 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:57:47,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:57:47 BoogieIcfgContainer [2022-12-14 07:57:47,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:57:47,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:57:47,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:57:47,648 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:57:47,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:46" (3/4) ... [2022-12-14 07:57:47,651 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 07:57:47,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:57:47,652 INFO L158 Benchmark]: Toolchain (without parser) took 2384.72ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.3MB in the beginning and 38.4MB in the end (delta: -4.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-12-14 07:57:47,652 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 81.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:57:47,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 935.91ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.2MB in the beginning and 30.9MB in the end (delta: 3.3MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2022-12-14 07:57:47,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.13ms. Allocated memory is still 71.3MB. Free memory was 30.9MB in the beginning and 28.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:57:47,653 INFO L158 Benchmark]: Boogie Preprocessor took 20.14ms. Allocated memory is still 71.3MB. Free memory was 27.8MB in the beginning and 25.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:57:47,653 INFO L158 Benchmark]: RCFGBuilder took 313.80ms. Allocated memory is still 71.3MB. Free memory was 25.9MB in the beginning and 32.6MB in the end (delta: -6.7MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2022-12-14 07:57:47,653 INFO L158 Benchmark]: TraceAbstraction took 1070.33ms. Allocated memory is still 71.3MB. Free memory was 31.9MB in the beginning and 38.8MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:57:47,654 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 71.3MB. Free memory was 38.8MB in the beginning and 38.4MB in the end (delta: 388.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:57:47,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 81.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 935.91ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.2MB in the beginning and 30.9MB in the end (delta: 3.3MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.13ms. Allocated memory is still 71.3MB. Free memory was 30.9MB in the beginning and 28.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.14ms. Allocated memory is still 71.3MB. Free memory was 27.8MB in the beginning and 25.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.80ms. Allocated memory is still 71.3MB. Free memory was 25.9MB in the beginning and 32.6MB in the end (delta: -6.7MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1070.33ms. Allocated memory is still 71.3MB. Free memory was 31.9MB in the beginning and 38.8MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 71.3MB. Free memory was 38.8MB in the beginning and 38.4MB in the end (delta: 388.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int staticFive = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}, staticFive=5] [L1414] COND TRUE line != ((void *)0) [L1579] 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, staticFive=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_multiply_07_bad() [L1551] int data; [L1552] 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, staticFive=5] [L1553] COND TRUE staticFive==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] 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, staticFive=5] [L1567] COND TRUE staticFive==5 VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1569] 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, staticFive=5] [L1571] 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, staticFive=5] - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 27 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 07:57:47,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315ccad9-a111-4f02-ad3f-fe250a71017a/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