./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_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_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea --- 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 23:38:29,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:38:29,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:38:29,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:38:29,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:38:29,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:38:29,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:38:29,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:38:29,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:38:29,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:38:29,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:38:29,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:38:29,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:38:29,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:38:29,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:38:29,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:38:29,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:38:29,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:38:29,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:38:29,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:38:29,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:38:29,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:38:29,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:38:29,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:38:29,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:38:29,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:38:29,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:38:29,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:38:29,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:38:29,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:38:29,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:38:29,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:38:29,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:38:29,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:38:29,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:38:29,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:38:29,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:38:29,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:38:29,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:38:29,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:38:29,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:38:29,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 23:38:29,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:38:29,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:38:29,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:38:29,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:38:29,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:38:29,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:38:29,185 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:38:29,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:38:29,186 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:38:29,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:38:29,187 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:38:29,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:38:29,187 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:38:29,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:38:29,188 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:38:29,188 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:38:29,188 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:38:29,188 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:38:29,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:38:29,190 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:38:29,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:38:29,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:38:29,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:38:29,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:38:29,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:38:29,191 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:38:29,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:38:29,192 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:38:29,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:38:29,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:38:29,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:38:29,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:38:29,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:38:29,194 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:38:29,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:38:29,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:38:29,194 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:38:29,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:38:29,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:38:29,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:38:29,195 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_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea [2022-11-25 23:38:29,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:38:29,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:38:29,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:38:29,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:38:29,574 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:38:29,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-11-25 23:38:32,901 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:38:33,290 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:38:33,292 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-11-25 23:38:33,315 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/data/c2a01a264/a452eee8c6664b2cae39e87277425f69/FLAG91ded559f [2022-11-25 23:38:33,336 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/data/c2a01a264/a452eee8c6664b2cae39e87277425f69 [2022-11-25 23:38:33,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:38:33,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:38:33,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:38:33,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:38:33,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:38:33,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:38:33" (1/1) ... [2022-11-25 23:38:33,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f42e603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:33, skipping insertion in model container [2022-11-25 23:38:33,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:38:33" (1/1) ... [2022-11-25 23:38:33,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:38:33,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:38:33,844 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:38:34,425 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:38:34,432 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:38:34,438 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:38:34,442 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:38:34,450 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:38:34,496 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:38:34,508 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:38:34,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:38:34,533 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:38:34,573 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:38:34,667 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:38:34,671 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:38:34,673 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:38:34,684 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:38:34,688 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:38:34,694 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:38:34,705 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:38:34,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:38:34,874 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:38:34,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34 WrapperNode [2022-11-25 23:38:34,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:38:34,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:38:34,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:38:34,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:38:34,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,934 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-25 23:38:34,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:38:34,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:38:34,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:38:34,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:38:34,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:38:34,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:38:34,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:38:34,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:38:34,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (1/1) ... [2022-11-25 23:38:34,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:38:35,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:38:35,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:38:35,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:38:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:38:35,062 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:38:35,063 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:38:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:38:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:38:35,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:38:35,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:38:35,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:38:35,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:38:35,065 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:38:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:38:35,214 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:38:35,216 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:38:35,440 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:38:35,524 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:38:35,543 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:38:35,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:35 BoogieIcfgContainer [2022-11-25 23:38:35,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:38:35,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:38:35,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:38:35,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:38:35,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:38:33" (1/3) ... [2022-11-25 23:38:35,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57af4eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:38:35, skipping insertion in model container [2022-11-25 23:38:35,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:34" (2/3) ... [2022-11-25 23:38:35,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57af4eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:38:35, skipping insertion in model container [2022-11-25 23:38:35,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:35" (3/3) ... [2022-11-25 23:38:35,556 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-11-25 23:38:35,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:38:35,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:38:35,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:38:35,675 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;@9e1e9b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:38:35,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:38:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 23:38:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:38:35,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:35,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:35,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:38:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-11-25 23:38:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:35,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290185726] [2022-11-25 23:38:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:36,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290185726] [2022-11-25 23:38:36,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290185726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:36,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:36,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:38:36,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201579261] [2022-11-25 23:38:36,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:36,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:38:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:38:36,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:38:36,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:38:36,153 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-25 23:38:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:36,223 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-25 23:38:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:38:36,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 8 [2022-11-25 23:38:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:36,234 INFO L225 Difference]: With dead ends: 29 [2022-11-25 23:38:36,235 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:38:36,239 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 [2022-11-25 23:38:36,246 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 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 [2022-11-25 23:38:36,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:38:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:38:36,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-25 23:38:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 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) [2022-11-25 23:38:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-25 23:38:36,292 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-11-25 23:38:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:36,294 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-25 23:38:36,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-25 23:38:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-25 23:38:36,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:38:36,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:36,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:36,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:38:36,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:38:36,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:36,298 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-11-25 23:38:36,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:36,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771685447] [2022-11-25 23:38:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:36,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:38:36,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:38:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:38:36,412 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:38:36,413 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:38:36,415 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:38:36,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:38:36,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:38:36,429 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 23:38:36,434 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:38:36,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:38:36 BoogieIcfgContainer [2022-11-25 23:38:36,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:38:36,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:38:36,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:38:36,477 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:38:36,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:35" (3/4) ... [2022-11-25 23:38:36,481 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:38:36,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:38:36,487 INFO L158 Benchmark]: Toolchain (without parser) took 3146.34ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 98.9MB in the beginning and 82.1MB in the end (delta: 16.8MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2022-11-25 23:38:36,488 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:38:36,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1531.25ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 98.9MB in the beginning and 133.5MB in the end (delta: -34.6MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2022-11-25 23:38:36,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.03ms. Allocated memory is still 176.2MB. Free memory was 133.5MB in the beginning and 130.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:38:36,490 INFO L158 Benchmark]: Boogie Preprocessor took 28.47ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 129.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:38:36,490 INFO L158 Benchmark]: RCFGBuilder took 582.38ms. Allocated memory is still 176.2MB. Free memory was 129.2MB in the beginning and 114.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:38:36,491 INFO L158 Benchmark]: TraceAbstraction took 925.57ms. Allocated memory is still 176.2MB. Free memory was 113.5MB in the beginning and 82.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-25 23:38:36,492 INFO L158 Benchmark]: Witness Printer took 11.61ms. Allocated memory is still 176.2MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:38:36,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1531.25ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 98.9MB in the beginning and 133.5MB in the end (delta: -34.6MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.03ms. Allocated memory is still 176.2MB. Free memory was 133.5MB in the beginning and 130.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.47ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 129.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 582.38ms. Allocated memory is still 176.2MB. Free memory was 129.2MB in the beginning and 114.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 925.57ms. Allocated memory is still 176.2MB. Free memory was 113.5MB in the beginning and 82.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 11.61ms. Allocated memory is still 176.2MB. Free memory is still 82.1MB. 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: 1570]: 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)=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, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_predec_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] [L1570] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] - UnprovableResult [Line: 1570]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 14 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, 14 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=18occurred 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, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 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 [2022-11-25 23:38:36,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea --- 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 23:38:39,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:38:39,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:38:39,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:38:39,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:38:39,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:38:39,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:38:39,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:38:39,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:38:39,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:38:39,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:38:39,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:38:39,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:38:39,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:38:39,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:38:39,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:38:39,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:38:39,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:38:39,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:38:39,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:38:39,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:38:39,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:38:39,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:38:39,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:38:39,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:38:39,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:38:39,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:38:39,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:38:39,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:38:39,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:38:39,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:38:39,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:38:39,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:38:39,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:38:39,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:38:39,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:38:39,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:38:39,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:38:39,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:38:39,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:38:39,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:38:39,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 23:38:39,174 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:38:39,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:38:39,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:38:39,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:38:39,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:38:39,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:38:39,178 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:38:39,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:38:39,178 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:38:39,178 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:38:39,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:38:39,180 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:38:39,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:38:39,181 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:38:39,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:38:39,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:38:39,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:38:39,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:38:39,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:38:39,182 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:38:39,182 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:38:39,182 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:38:39,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:38:39,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:38:39,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:38:39,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:38:39,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:38:39,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:38:39,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:38:39,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:38:39,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:38:39,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:38:39,185 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:38:39,185 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:38:39,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:38:39,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:38:39,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:38:39,186 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_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea [2022-11-25 23:38:39,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:38:39,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:38:39,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:38:39,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:38:39,597 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:38:39,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-11-25 23:38:42,689 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:38:43,204 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:38:43,205 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-11-25 23:38:43,254 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/data/b2cfaeb3a/32d1ccc70f9948b29da785f47ee60c09/FLAG271127f41 [2022-11-25 23:38:43,282 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/data/b2cfaeb3a/32d1ccc70f9948b29da785f47ee60c09 [2022-11-25 23:38:43,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:38:43,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:38:43,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:38:43,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:38:43,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:38:43,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:38:43" (1/1) ... [2022-11-25 23:38:43,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74984d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:43, skipping insertion in model container [2022-11-25 23:38:43,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:38:43" (1/1) ... [2022-11-25 23:38:43,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:38:43,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:38:43,877 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:38:44,712 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:38:44,720 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:38:44,723 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:38:44,734 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:38:44,735 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:38:44,770 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:38:44,779 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:38:44,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:38:44,804 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:38:44,845 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:38:44,935 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:38:44,946 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:38:44,948 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:38:44,951 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:38:44,953 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:38:44,967 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:38:44,969 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:38:44,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:38:45,189 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:38:45,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45 WrapperNode [2022-11-25 23:38:45,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:38:45,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:38:45,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:38:45,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:38:45,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,284 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-11-25 23:38:45,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:38:45,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:38:45,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:38:45,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:38:45,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,314 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:38:45,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:38:45,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:38:45,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:38:45,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (1/1) ... [2022-11-25 23:38:45,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:38:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:38:45,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:38:45,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:38:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:38:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:38:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:38:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:38:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:38:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:38:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:38:45,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:38:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:38:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:38:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 23:38:45,609 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:38:45,611 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:38:45,864 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:38:45,887 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:38:45,887 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:38:45,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:45 BoogieIcfgContainer [2022-11-25 23:38:45,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:38:45,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:38:45,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:38:45,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:38:45,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:38:43" (1/3) ... [2022-11-25 23:38:45,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3271a550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:38:45, skipping insertion in model container [2022-11-25 23:38:45,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:45" (2/3) ... [2022-11-25 23:38:45,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3271a550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:38:45, skipping insertion in model container [2022-11-25 23:38:45,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:45" (3/3) ... [2022-11-25 23:38:45,899 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-11-25 23:38:45,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:38:45,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:38:46,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:38:46,025 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;@4905089c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:38:46,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:38:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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 23:38:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:38:46,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:46,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:46,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:38:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:46,052 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-11-25 23:38:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:46,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494774161] [2022-11-25 23:38:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:46,076 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 23:38:46,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:46,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 23:38:46,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 23:38:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:46,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:38:46,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:46,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:46,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:46,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494774161] [2022-11-25 23:38:46,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494774161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:46,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:46,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:38:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342119052] [2022-11-25 23:38:46,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:46,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:38:46,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:38:46,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:38:46,470 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-25 23:38:46,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:46,523 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-25 23:38:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:38:46,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 11 [2022-11-25 23:38:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:46,533 INFO L225 Difference]: With dead ends: 39 [2022-11-25 23:38:46,533 INFO L226 Difference]: Without dead ends: 15 [2022-11-25 23:38:46,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:38:46,540 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 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 [2022-11-25 23:38:46,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:38:46,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-25 23:38:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-25 23:38:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-11-25 23:38:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-25 23:38:46,596 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-11-25 23:38:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:46,598 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-25 23:38:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-25 23:38:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-25 23:38:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 23:38:46,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:46,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:46,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 23:38:46,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 23:38:46,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:38:46,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-11-25 23:38:46,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:46,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099236307] [2022-11-25 23:38:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:46,818 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 23:38:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:46,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 23:38:46,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 (3)] Waiting until timeout for monitored process [2022-11-25 23:38:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:38:46,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:38:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:38:47,038 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 23:38:47,039 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:38:47,041 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:38:47,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:38:47,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:47,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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 23:38:47,256 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 23:38:47,260 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:38:47,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:38:47 BoogieIcfgContainer [2022-11-25 23:38:47,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:38:47,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:38:47,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:38:47,298 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:38:47,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:45" (3/4) ... [2022-11-25 23:38:47,302 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:38:47,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:38:47,303 INFO L158 Benchmark]: Toolchain (without parser) took 4011.57ms. Allocated memory was 67.1MB in the beginning and 104.9MB in the end (delta: 37.7MB). Free memory was 41.3MB in the beginning and 63.1MB in the end (delta: -21.8MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2022-11-25 23:38:47,304 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 67.1MB. Free memory was 44.6MB in the beginning and 44.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:38:47,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1896.39ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 41.1MB in the beginning and 51.6MB in the end (delta: -10.5MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2022-11-25 23:38:47,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.87ms. Allocated memory is still 86.0MB. Free memory was 51.6MB in the beginning and 48.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:38:47,306 INFO L158 Benchmark]: Boogie Preprocessor took 34.56ms. Allocated memory is still 86.0MB. Free memory was 48.4MB in the beginning and 46.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:38:47,306 INFO L158 Benchmark]: RCFGBuilder took 569.82ms. Allocated memory is still 86.0MB. Free memory was 46.3MB in the beginning and 53.7MB in the end (delta: -7.5MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-11-25 23:38:47,307 INFO L158 Benchmark]: TraceAbstraction took 1404.89ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 52.8MB in the beginning and 63.1MB in the end (delta: -10.3MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-11-25 23:38:47,308 INFO L158 Benchmark]: Witness Printer took 5.06ms. Allocated memory is still 104.9MB. Free memory is still 63.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:38:47,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 67.1MB. Free memory was 44.6MB in the beginning and 44.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1896.39ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 41.1MB in the beginning and 51.6MB in the end (delta: -10.5MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.87ms. Allocated memory is still 86.0MB. Free memory was 51.6MB in the beginning and 48.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.56ms. Allocated memory is still 86.0MB. Free memory was 48.4MB in the beginning and 46.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 569.82ms. Allocated memory is still 86.0MB. Free memory was 46.3MB in the beginning and 53.7MB in the end (delta: -7.5MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1404.89ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 52.8MB in the beginning and 63.1MB in the end (delta: -10.3MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Witness Printer took 5.06ms. Allocated memory is still 104.9MB. Free memory is still 63.1MB. 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: 1570]: 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_predec_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] [L1570] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] - UnprovableResult [Line: 1570]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 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, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 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 [2022-11-25 23:38:47,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f8ab96-e8d5-4376-a555-be4e6fd7178a/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