./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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_d8801d6b-0555-4b07-989c-87c76d171af8/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 752d2212a67a1ee1e01a0dcea11800cf454a0491edd7407e01b8d1e8fdd60f76 --- 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 14:59:24,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:59:24,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:59:24,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:59:24,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:59:24,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:59:24,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:59:24,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:59:24,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:59:24,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:59:24,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:59:24,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:59:24,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:59:24,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:59:24,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:59:24,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:59:24,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:59:24,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:59:24,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:59:24,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:59:24,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:59:24,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:59:24,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:59:24,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:59:24,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:59:24,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:59:24,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:59:24,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:59:24,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:59:24,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:59:24,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:59:24,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:59:24,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:59:24,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:59:24,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:59:24,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:59:24,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:59:24,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:59:24,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:59:24,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:59:24,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:59:24,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 14:59:24,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:59:24,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:59:24,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:59:24,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:59:24,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:59:24,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:59:24,494 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:59:24,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:59:24,494 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:59:24,494 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:59:24,494 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:59:24,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:59:24,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:59:24,495 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:59:24,495 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:59:24,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:59:24,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:59:24,495 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:59:24,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:59:24,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:59:24,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:59:24,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:59:24,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:59:24,497 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:59:24,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:59:24,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:59:24,497 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:59:24,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:59:24,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:59:24,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:59:24,497 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_d8801d6b-0555-4b07-989c-87c76d171af8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 752d2212a67a1ee1e01a0dcea11800cf454a0491edd7407e01b8d1e8fdd60f76 [2022-12-14 14:59:24,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:59:24,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:59:24,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:59:24,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:59:24,685 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:59:24,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i [2022-12-14 14:59:27,262 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:59:27,452 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:59:27,452 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i [2022-12-14 14:59:27,465 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/data/e9b4995ec/ab26a220e8b2422bbc1ccd6a2d8591fb/FLAG9aa22d1e5 [2022-12-14 14:59:27,478 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/data/e9b4995ec/ab26a220e8b2422bbc1ccd6a2d8591fb [2022-12-14 14:59:27,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:59:27,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:59:27,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:59:27,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:59:27,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:59:27,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:59:27" (1/1) ... [2022-12-14 14:59:27,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36991046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:27, skipping insertion in model container [2022-12-14 14:59:27,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:59:27" (1/1) ... [2022-12-14 14:59:27,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:59:27,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:59:27,800 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:59:28,076 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:59:28,080 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:59:28,082 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:59:28,084 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:59:28,084 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:59:28,103 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:59:28,108 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:59:28,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:59:28,117 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:59:28,132 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:59:28,165 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:59:28,166 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:59:28,167 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:59:28,169 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:59:28,169 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:59:28,173 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:59:28,174 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:59:28,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:59:28,262 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:59:28,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28 WrapperNode [2022-12-14 14:59:28,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:59:28,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:59:28,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:59:28,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:59:28,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,304 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 14:59:28,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:59:28,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:59:28,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:59:28,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:59:28,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,320 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:59:28,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:59:28,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:59:28,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:59:28,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (1/1) ... [2022-12-14 14:59:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:59:28,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:59:28,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:59:28,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 14:59:28,378 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:59:28,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 14:59:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:59:28,492 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:59:28,494 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:59:28,591 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:59:28,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:59:28,617 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 14:59:28,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:59:28 BoogieIcfgContainer [2022-12-14 14:59:28,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:59:28,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:59:28,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:59:28,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:59:28,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:59:27" (1/3) ... [2022-12-14 14:59:28,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbbb9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:59:28, skipping insertion in model container [2022-12-14 14:59:28,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:28" (2/3) ... [2022-12-14 14:59:28,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbbb9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:59:28, skipping insertion in model container [2022-12-14 14:59:28,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:59:28" (3/3) ... [2022-12-14 14:59:28,627 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i [2022-12-14 14:59:28,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:59:28,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:59:28,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:59:28,682 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;@5de04a78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:59:28,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:59:28,685 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 14:59:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:59:28,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:59:28,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:59:28,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:59:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:59:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash 805598275, now seen corresponding path program 1 times [2022-12-14 14:59:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:59:28,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423022605] [2022-12-14 14:59:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:59:28,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:59:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:59:28,877 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 14:59:28,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:59:28,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423022605] [2022-12-14 14:59:28,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423022605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:59:28,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:59:28,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:59:28,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818704664] [2022-12-14 14:59:28,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:59:28,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:59:28,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:59:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:59:28,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:59:28,919 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 14:59:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:59:28,956 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-12-14 14:59:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:59:28,958 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 14:59:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:59:28,965 INFO L225 Difference]: With dead ends: 31 [2022-12-14 14:59:28,965 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 14:59:28,967 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 14:59:28,969 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 14:59:28,970 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 14:59:28,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 14:59:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 14:59:28,999 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 14:59:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-12-14 14:59:29,000 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-12-14 14:59:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:59:29,001 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-12-14 14:59:29,001 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 14:59:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-12-14 14:59:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:59:29,003 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:59:29,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:59:29,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:59:29,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:59:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:59:29,004 INFO L85 PathProgramCache]: Analyzing trace with hash 789107816, now seen corresponding path program 1 times [2022-12-14 14:59:29,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:59:29,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518894767] [2022-12-14 14:59:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:59:29,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:59:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:59:29,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:59:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:59:29,077 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:59:29,077 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:59:29,078 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:59:29,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:59:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:59:29,083 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 14:59:29,086 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:59:29,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:59:29 BoogieIcfgContainer [2022-12-14 14:59:29,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:59:29,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:59:29,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:59:29,109 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:59:29,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:59:28" (3/4) ... [2022-12-14 14:59:29,112 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:59:29,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:59:29,113 INFO L158 Benchmark]: Toolchain (without parser) took 1630.97ms. Allocated memory is still 167.8MB. Free memory was 123.1MB in the beginning and 118.1MB in the end (delta: 5.0MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-12-14 14:59:29,114 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:59:29,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 779.40ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 107.1MB in the end (delta: 15.5MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2022-12-14 14:59:29,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.10ms. Allocated memory is still 167.8MB. Free memory was 107.1MB in the beginning and 104.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:59:29,115 INFO L158 Benchmark]: Boogie Preprocessor took 17.12ms. Allocated memory is still 167.8MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:59:29,116 INFO L158 Benchmark]: RCFGBuilder took 295.76ms. Allocated memory is still 167.8MB. Free memory was 102.2MB in the beginning and 88.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:59:29,116 INFO L158 Benchmark]: TraceAbstraction took 488.43ms. Allocated memory is still 167.8MB. Free memory was 87.5MB in the beginning and 119.1MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:59:29,116 INFO L158 Benchmark]: Witness Printer took 3.35ms. Allocated memory is still 167.8MB. Free memory is still 118.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:59:29,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 779.40ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 107.1MB in the end (delta: 15.5MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.10ms. Allocated memory is still 167.8MB. Free memory was 107.1MB in the beginning and 104.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.12ms. Allocated memory is still 167.8MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.76ms. Allocated memory is still 167.8MB. Free memory was 102.2MB in the beginning and 88.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 488.43ms. Allocated memory is still 167.8MB. Free memory was 87.5MB in the beginning and 119.1MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.35ms. Allocated memory is still 167.8MB. Free memory is still 118.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 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 const int STATIC_CONST_FIVE = 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}, STATIC_CONST_FIVE=5] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=1073741825, argc=1073741825, 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, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_multiply_06_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, STATIC_CONST_FIVE=5] [L1553] COND TRUE STATIC_CONST_FIVE==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, STATIC_CONST_FIVE=5] [L1567] COND TRUE STATIC_CONST_FIVE==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, STATIC_CONST_FIVE=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, STATIC_CONST_FIVE=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, STATIC_CONST_FIVE=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 14:59:29,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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_d8801d6b-0555-4b07-989c-87c76d171af8/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 752d2212a67a1ee1e01a0dcea11800cf454a0491edd7407e01b8d1e8fdd60f76 --- 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 14:59:30,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:59:30,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:59:30,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:59:30,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:59:30,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:59:30,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:59:30,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:59:30,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:59:30,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:59:30,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:59:30,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:59:30,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:59:30,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:59:30,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:59:30,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:59:30,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:59:30,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:59:30,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:59:30,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:59:30,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:59:30,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:59:30,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:59:30,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:59:30,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:59:30,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:59:30,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:59:30,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:59:30,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:59:30,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:59:30,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:59:30,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:59:30,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:59:30,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:59:30,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:59:30,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:59:30,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:59:30,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:59:30,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:59:30,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:59:30,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:59:30,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 14:59:30,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:59:30,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:59:30,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:59:30,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:59:30,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:59:30,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:59:30,886 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:59:30,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:59:30,886 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:59:30,886 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:59:30,886 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:59:30,886 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:59:30,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:59:30,887 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:59:30,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:59:30,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:59:30,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:59:30,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:59:30,888 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:59:30,888 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:59:30,888 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:59:30,888 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:59:30,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:59:30,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:59:30,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:59:30,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:59:30,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:59:30,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:59:30,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:59:30,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:59:30,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:59:30,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:59:30,889 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:59:30,889 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:59:30,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:59:30,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:59:30,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:59:30,890 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_d8801d6b-0555-4b07-989c-87c76d171af8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 752d2212a67a1ee1e01a0dcea11800cf454a0491edd7407e01b8d1e8fdd60f76 [2022-12-14 14:59:31,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:59:31,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:59:31,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:59:31,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:59:31,159 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:59:31,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i [2022-12-14 14:59:33,747 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:59:34,020 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:59:34,021 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i [2022-12-14 14:59:34,038 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/data/39455f89d/5feac17ed5b949a78dd05538de503339/FLAGac314374d [2022-12-14 14:59:34,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/data/39455f89d/5feac17ed5b949a78dd05538de503339 [2022-12-14 14:59:34,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:59:34,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:59:34,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:59:34,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:59:34,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:59:34,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0d4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34, skipping insertion in model container [2022-12-14 14:59:34,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:59:34,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:59:34,407 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:59:34,730 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:59:34,734 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:59:34,736 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:59:34,737 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:59:34,738 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:59:34,752 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:59:34,756 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:59:34,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:59:34,768 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:59:34,782 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:59:34,820 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:59:34,821 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:59:34,822 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:59:34,823 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:59:34,824 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:59:34,827 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:59:34,829 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:59:34,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:59:34,931 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:59:34,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34 WrapperNode [2022-12-14 14:59:34,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:59:34,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:59:34,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:59:34,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:59:34,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,976 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-12-14 14:59:34,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:59:34,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:59:34,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:59:34,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:59:34,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,996 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:34,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:59:35,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:59:35,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:59:35,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:59:35,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (1/1) ... [2022-12-14 14:59:35,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:59:35,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:59:35,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:59:35,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:59:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 14:59:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 14:59:35,059 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 14:59:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:59:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 14:59:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:59:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:59:35,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:59:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:59:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 14:59:35,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 14:59:35,177 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:59:35,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:59:35,303 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:59:35,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:59:35,309 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 14:59:35,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:59:35 BoogieIcfgContainer [2022-12-14 14:59:35,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:59:35,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:59:35,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:59:35,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:59:35,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:59:34" (1/3) ... [2022-12-14 14:59:35,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff0e5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:59:35, skipping insertion in model container [2022-12-14 14:59:35,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:59:34" (2/3) ... [2022-12-14 14:59:35,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff0e5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:59:35, skipping insertion in model container [2022-12-14 14:59:35,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:59:35" (3/3) ... [2022-12-14 14:59:35,319 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_06_bad.i [2022-12-14 14:59:35,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:59:35,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:59:35,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:59:35,372 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;@7af00729, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:59:35,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:59:35,377 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 14:59:35,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 14:59:35,384 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:59:35,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:59:35,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:59:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:59:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1426013167, now seen corresponding path program 1 times [2022-12-14 14:59:35,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:59:35,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591424895] [2022-12-14 14:59:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:59:35,401 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 14:59:35,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:59:35,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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 14:59:35,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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 14:59:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:59:35,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:59:35,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:59:35,575 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 14:59:35,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:59:35,575 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:59:35,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591424895] [2022-12-14 14:59:35,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591424895] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:59:35,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:59:35,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:59:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89388706] [2022-12-14 14:59:35,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:59:35,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:59:35,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:59:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:59:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:59:35,603 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 14:59:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:59:35,626 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2022-12-14 14:59:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:59:35,629 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 14:59:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:59:35,635 INFO L225 Difference]: With dead ends: 42 [2022-12-14 14:59:35,635 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 14:59:35,637 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 14:59:35,639 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 14:59:35,640 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 14:59:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 14:59:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 14:59:35,663 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 14:59:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-12-14 14:59:35,664 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-12-14 14:59:35,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:59:35,665 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-12-14 14:59:35,665 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 14:59:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-12-14 14:59:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 14:59:35,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:59:35,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:59:35,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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 14:59:35,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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 14:59:35,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:59:35,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:59:35,869 INFO L85 PathProgramCache]: Analyzing trace with hash -600807242, now seen corresponding path program 1 times [2022-12-14 14:59:35,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:59:35,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273502615] [2022-12-14 14:59:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:59:35,870 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 14:59:35,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:59:35,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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 14:59:35,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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 14:59:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:59:35,969 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:59:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:59:36,022 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 14:59:36,022 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:59:36,024 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:59:36,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:59:36,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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 14:59:36,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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 14:59:36,237 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 14:59:36,248 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:59:36,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:59:36 BoogieIcfgContainer [2022-12-14 14:59:36,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:59:36,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:59:36,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:59:36,290 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:59:36,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:59:35" (3/4) ... [2022-12-14 14:59:36,293 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:59:36,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:59:36,293 INFO L158 Benchmark]: Toolchain (without parser) took 2235.55ms. Allocated memory was 69.2MB in the beginning and 94.4MB in the end (delta: 25.2MB). Free memory was 44.2MB in the beginning and 59.8MB in the end (delta: -15.6MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2022-12-14 14:59:36,294 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:59:36,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 872.36ms. Allocated memory was 69.2MB in the beginning and 94.4MB in the end (delta: 25.2MB). Free memory was 44.2MB in the beginning and 53.1MB in the end (delta: -8.9MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2022-12-14 14:59:36,295 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.01ms. Allocated memory is still 94.4MB. Free memory was 53.1MB in the beginning and 49.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:59:36,295 INFO L158 Benchmark]: Boogie Preprocessor took 22.96ms. Allocated memory is still 94.4MB. Free memory was 49.9MB in the beginning and 47.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:59:36,295 INFO L158 Benchmark]: RCFGBuilder took 311.02ms. Allocated memory is still 94.4MB. Free memory was 47.8MB in the beginning and 63.2MB in the end (delta: -15.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2022-12-14 14:59:36,296 INFO L158 Benchmark]: TraceAbstraction took 976.35ms. Allocated memory is still 94.4MB. Free memory was 62.1MB in the beginning and 60.4MB in the end (delta: 1.7MB). Peak memory consumption was 886.6kB. Max. memory is 16.1GB. [2022-12-14 14:59:36,296 INFO L158 Benchmark]: Witness Printer took 2.80ms. Allocated memory is still 94.4MB. Free memory was 60.4MB in the beginning and 59.8MB in the end (delta: 587.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:59:36,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 872.36ms. Allocated memory was 69.2MB in the beginning and 94.4MB in the end (delta: 25.2MB). Free memory was 44.2MB in the beginning and 53.1MB in the end (delta: -8.9MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.01ms. Allocated memory is still 94.4MB. Free memory was 53.1MB in the beginning and 49.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.96ms. Allocated memory is still 94.4MB. Free memory was 49.9MB in the beginning and 47.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.02ms. Allocated memory is still 94.4MB. Free memory was 47.8MB in the beginning and 63.2MB in the end (delta: -15.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 976.35ms. Allocated memory is still 94.4MB. Free memory was 62.1MB in the beginning and 60.4MB in the end (delta: 1.7MB). Peak memory consumption was 886.6kB. Max. memory is 16.1GB. * Witness Printer took 2.80ms. Allocated memory is still 94.4MB. Free memory was 60.4MB in the beginning and 59.8MB in the end (delta: 587.7kB). 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 const int STATIC_CONST_FIVE = 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, STATIC_CONST_FIVE=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}, STATIC_CONST_FIVE=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, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_multiply_06_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, STATIC_CONST_FIVE=5] [L1553] COND TRUE STATIC_CONST_FIVE==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, STATIC_CONST_FIVE=5] [L1567] COND TRUE STATIC_CONST_FIVE==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, STATIC_CONST_FIVE=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, STATIC_CONST_FIVE=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, STATIC_CONST_FIVE=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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 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 14:59:36,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8801d6b-0555-4b07-989c-87c76d171af8/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