./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:40:52,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:40:52,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:40:52,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:40:52,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:40:52,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:40:52,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:40:52,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:40:52,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:40:52,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:40:52,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:40:52,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:40:52,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:40:52,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:40:52,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:40:52,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:40:52,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:40:52,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:40:52,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:40:52,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:40:52,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:40:52,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:40:52,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:40:52,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:40:52,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:40:52,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:40:52,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:40:52,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:40:52,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:40:52,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:40:52,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:40:52,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:40:52,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:40:52,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:40:52,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:40:52,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:40:52,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:40:52,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:40:52,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:40:52,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:40:52,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:40:52,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 23:40:52,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:40:52,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:40:52,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:40:52,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:40:52,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:40:52,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:40:52,184 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:40:52,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:40:52,185 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:40:52,185 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:40:52,185 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:40:52,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:40:52,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:40:52,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:40:52,186 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:40:52,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:40:52,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:40:52,187 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:40:52,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:40:52,189 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:40:52,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:40:52,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:40:52,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:40:52,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:40:52,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:40:52,191 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:40:52,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:40:52,191 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:40:52,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:40:52,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:40:52,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:40:52,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:40:52,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:40:52,193 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:40:52,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:40:52,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:40:52,194 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:40:52,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:40:52,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:40:52,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:40:52,195 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_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2022-11-25 23:40:52,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:40:52,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:40:52,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:40:52,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:40:52,577 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:40:52,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2022-11-25 23:40:56,228 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:40:56,733 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:40:56,733 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2022-11-25 23:40:56,781 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/data/72d218ad5/6f7369de998a4acea7266094add5168b/FLAGddd219453 [2022-11-25 23:40:56,806 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/data/72d218ad5/6f7369de998a4acea7266094add5168b [2022-11-25 23:40:56,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:40:56,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:40:56,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:40:56,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:40:56,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:40:56,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:40:56" (1/1) ... [2022-11-25 23:40:56,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d96ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:56, skipping insertion in model container [2022-11-25 23:40:56,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:40:56" (1/1) ... [2022-11-25 23:40:56,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:40:56,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:40:57,438 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:40:58,038 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:40:58,052 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:40:58,056 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:40:58,069 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:40:58,070 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:40:58,120 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:40:58,124 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:40:58,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:40:58,154 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:40:58,191 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:40:58,296 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:40:58,298 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:40:58,300 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:40:58,307 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:40:58,308 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:40:58,316 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:40:58,321 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:40:58,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:40:58,489 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:40:58,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58 WrapperNode [2022-11-25 23:40:58,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:40:58,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:40:58,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:40:58,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:40:58,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,595 INFO L138 Inliner]: procedures = 501, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2022-11-25 23:40:58,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:40:58,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:40:58,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:40:58,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:40:58,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:40:58,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:40:58,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:40:58,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:40:58,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (1/1) ... [2022-11-25 23:40:58,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:40:58,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:40:58,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:40:58,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:40:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:40:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:40:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:40:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:40:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:40:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:40:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:40:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:40:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:40:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:40:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:40:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:40:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:40:58,955 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:40:58,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:40:59,269 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:40:59,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:40:59,311 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:40:59,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:40:59 BoogieIcfgContainer [2022-11-25 23:40:59,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:40:59,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:40:59,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:40:59,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:40:59,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:40:56" (1/3) ... [2022-11-25 23:40:59,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e030713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:40:59, skipping insertion in model container [2022-11-25 23:40:59,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:40:58" (2/3) ... [2022-11-25 23:40:59,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e030713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:40:59, skipping insertion in model container [2022-11-25 23:40:59,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:40:59" (3/3) ... [2022-11-25 23:40:59,325 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2022-11-25 23:40:59,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:40:59,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:40:59,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:40:59,420 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;@11779070, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:40:59,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:40:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:40:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:40:59,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:40:59,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:40:59,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:40:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:40:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1634006193, now seen corresponding path program 1 times [2022-11-25 23:40:59,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:40:59,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440715177] [2022-11-25 23:40:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:40:59,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:40:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:40:59,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:40:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:40:59,811 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:40:59,817 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:40:59,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:40:59,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:40:59,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:40:59,829 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:40:59,839 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:40:59,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:40:59 BoogieIcfgContainer [2022-11-25 23:40:59,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:40:59,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:40:59,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:40:59,898 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:40:59,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:40:59" (3/4) ... [2022-11-25 23:40:59,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:40:59,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:40:59,905 INFO L158 Benchmark]: Toolchain (without parser) took 3090.26ms. Allocated memory is still 172.0MB. Free memory was 135.9MB in the beginning and 115.2MB in the end (delta: 20.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2022-11-25 23:40:59,906 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory was 72.9MB in the beginning and 72.7MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:40:59,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1670.74ms. Allocated memory is still 172.0MB. Free memory was 135.9MB in the beginning and 71.8MB in the end (delta: 64.1MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2022-11-25 23:40:59,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.11ms. Allocated memory is still 172.0MB. Free memory was 71.8MB in the beginning and 68.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:40:59,916 INFO L158 Benchmark]: Boogie Preprocessor took 54.94ms. Allocated memory is still 172.0MB. Free memory was 68.9MB in the beginning and 67.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:40:59,916 INFO L158 Benchmark]: RCFGBuilder took 660.68ms. Allocated memory is still 172.0MB. Free memory was 67.7MB in the beginning and 134.1MB in the end (delta: -66.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-11-25 23:40:59,918 INFO L158 Benchmark]: TraceAbstraction took 578.42ms. Allocated memory is still 172.0MB. Free memory was 134.1MB in the beginning and 115.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 23:40:59,919 INFO L158 Benchmark]: Witness Printer took 5.40ms. Allocated memory is still 172.0MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:40:59,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory was 72.9MB in the beginning and 72.7MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1670.74ms. Allocated memory is still 172.0MB. Free memory was 135.9MB in the beginning and 71.8MB in the end (delta: 64.1MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.11ms. Allocated memory is still 172.0MB. Free memory was 71.8MB in the beginning and 68.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.94ms. Allocated memory is still 172.0MB. Free memory was 68.9MB in the beginning and 67.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 660.68ms. Allocated memory is still 172.0MB. Free memory was 67.7MB in the beginning and 134.1MB in the end (delta: -66.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 578.42ms. Allocated memory is still 172.0MB. Free memory was 134.1MB in the beginning and 115.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.40ms. Allocated memory is still 172.0MB. Free memory is still 115.2MB. 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741830:1073741828}, argv={1073741830:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] data - 1 VAL [data=-2147483648, dataPtr={6:0}, dataPtr={6:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 23:40:59,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:41:02,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:41:02,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:41:03,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:41:03,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:41:03,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:41:03,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:41:03,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:41:03,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:41:03,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:41:03,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:41:03,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:41:03,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:41:03,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:41:03,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:41:03,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:41:03,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:41:03,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:41:03,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:41:03,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:41:03,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:41:03,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:41:03,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:41:03,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:41:03,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:41:03,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:41:03,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:41:03,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:41:03,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:41:03,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:41:03,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:41:03,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:41:03,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:41:03,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:41:03,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:41:03,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:41:03,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:41:03,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:41:03,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:41:03,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:41:03,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:41:03,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 23:41:03,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:41:03,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:41:03,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:41:03,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:41:03,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:41:03,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:41:03,151 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:41:03,152 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:41:03,152 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:41:03,152 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:41:03,153 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:41:03,153 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:41:03,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:41:03,154 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:41:03,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:41:03,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:41:03,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:41:03,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:41:03,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:41:03,156 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:41:03,156 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:41:03,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:41:03,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:41:03,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:41:03,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:41:03,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:41:03,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:41:03,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:41:03,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:41:03,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:41:03,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:41:03,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:41:03,160 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:41:03,160 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:41:03,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:41:03,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:41:03,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:41:03,161 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_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2022-11-25 23:41:03,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:41:03,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:41:03,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:41:03,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:41:03,614 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:41:03,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2022-11-25 23:41:07,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:41:07,812 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:41:07,812 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2022-11-25 23:41:07,834 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/data/3b3dfa97e/cf255612f4aa4318b690892ab005c6ec/FLAG0d62b47b1 [2022-11-25 23:41:07,857 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/data/3b3dfa97e/cf255612f4aa4318b690892ab005c6ec [2022-11-25 23:41:07,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:41:07,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:41:07,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:41:07,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:41:07,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:41:07,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:41:07" (1/1) ... [2022-11-25 23:41:07,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cb3b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:07, skipping insertion in model container [2022-11-25 23:41:07,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:41:07" (1/1) ... [2022-11-25 23:41:07,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:41:07,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:41:08,392 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:41:09,139 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:41:09,146 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:41:09,148 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:41:09,151 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:41:09,152 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:41:09,176 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:41:09,180 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:41:09,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:41:09,205 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:41:09,259 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:41:09,348 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:41:09,352 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:41:09,355 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:41:09,361 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:41:09,363 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:41:09,370 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:41:09,374 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:41:09,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:41:09,588 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:41:09,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09 WrapperNode [2022-11-25 23:41:09,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:41:09,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:41:09,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:41:09,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:41:09,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,701 INFO L138 Inliner]: procedures = 506, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2022-11-25 23:41:09,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:41:09,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:41:09,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:41:09,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:41:09,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:41:09,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:41:09,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:41:09,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:41:09,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (1/1) ... [2022-11-25 23:41:09,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:41:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:41:09,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:41:09,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:41:09,844 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:41:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:41:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:41:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:41:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:41:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:41:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:41:09,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:41:09,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 23:41:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:41:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 23:41:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:41:09,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 23:41:10,057 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:41:10,069 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:41:10,406 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:41:10,412 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:41:10,413 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:41:10,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:41:10 BoogieIcfgContainer [2022-11-25 23:41:10,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:41:10,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:41:10,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:41:10,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:41:10,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:41:07" (1/3) ... [2022-11-25 23:41:10,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79577afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:41:10, skipping insertion in model container [2022-11-25 23:41:10,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:09" (2/3) ... [2022-11-25 23:41:10,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79577afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:41:10, skipping insertion in model container [2022-11-25 23:41:10,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:41:10" (3/3) ... [2022-11-25 23:41:10,427 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2022-11-25 23:41:10,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:41:10,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:41:10,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:41:10,552 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;@17d4daa0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:41:10,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:41:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:41:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:41:10,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:10,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:41:10,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:41:10,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-25 23:41:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:41:10,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620507200] [2022-11-25 23:41:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:10,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:41:10,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:41:10,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:41:10,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 23:41:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:41:10,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:41:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:41:11,101 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 23:41:11,108 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:41:11,111 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:41:11,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:41:11,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:41:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:41:11,331 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:41:11,336 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:41:11,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:41:11 BoogieIcfgContainer [2022-11-25 23:41:11,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:41:11,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:41:11,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:41:11,371 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:41:11,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:41:10" (3/4) ... [2022-11-25 23:41:11,377 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:41:11,377 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:41:11,378 INFO L158 Benchmark]: Toolchain (without parser) took 3515.50ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 50.6MB in the beginning and 46.5MB in the end (delta: 4.1MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-11-25 23:41:11,379 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:41:11,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1725.47ms. Allocated memory is still 75.5MB. Free memory was 50.4MB in the beginning and 48.4MB in the end (delta: 2.0MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2022-11-25 23:41:11,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.91ms. Allocated memory is still 75.5MB. Free memory was 48.4MB in the beginning and 45.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:41:11,381 INFO L158 Benchmark]: Boogie Preprocessor took 40.14ms. Allocated memory is still 75.5MB. Free memory was 45.1MB in the beginning and 43.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:41:11,382 INFO L158 Benchmark]: RCFGBuilder took 671.73ms. Allocated memory is still 75.5MB. Free memory was 43.0MB in the beginning and 28.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:41:11,383 INFO L158 Benchmark]: TraceAbstraction took 951.17ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 27.5MB in the beginning and 47.0MB in the end (delta: -19.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:41:11,384 INFO L158 Benchmark]: Witness Printer took 6.72ms. Allocated memory is still 92.3MB. Free memory was 47.0MB in the beginning and 46.5MB in the end (delta: 521.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:41:11,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1725.47ms. Allocated memory is still 75.5MB. Free memory was 50.4MB in the beginning and 48.4MB in the end (delta: 2.0MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.91ms. Allocated memory is still 75.5MB. Free memory was 48.4MB in the beginning and 45.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.14ms. Allocated memory is still 75.5MB. Free memory was 45.1MB in the beginning and 43.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 671.73ms. Allocated memory is still 75.5MB. Free memory was 43.0MB in the beginning and 28.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 951.17ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 27.5MB in the beginning and 47.0MB in the end (delta: -19.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.72ms. Allocated memory is still 92.3MB. Free memory was 47.0MB in the beginning and 46.5MB in the end (delta: 521.1kB). 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] data - 1 VAL [data=-2147483648, dataPtr={7:0}, dataPtr={7:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 23:41:11,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5054dd6f-58ad-4238-8de0-266e9ca9c5c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample