./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_08_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_08_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash be67b078fbc5a0344bbc2977b42edb60a0a95dc77f0b12151b8c189fb28fd0c9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:16:31,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:16:31,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:16:31,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:16:31,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:16:31,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:16:31,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:16:31,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:16:31,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:16:31,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:16:31,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:16:31,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:16:31,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:16:31,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:16:31,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:16:31,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:16:31,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:16:31,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:16:31,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:16:31,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:16:31,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:16:31,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:16:31,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:16:31,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:16:31,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:16:31,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:16:31,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:16:31,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:16:31,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:16:31,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:16:31,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:16:31,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:16:31,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:16:31,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:16:31,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:16:31,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:16:31,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:16:31,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:16:31,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:16:31,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:16:31,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:16:31,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 13:16:31,160 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:16:31,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:16:31,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:16:31,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:16:31,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:16:31,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:16:31,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:16:31,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:16:31,162 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:16:31,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:16:31,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:16:31,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:16:31,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:16:31,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:16:31,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:16:31,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:16:31,164 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:16:31,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:16:31,164 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:16:31,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:16:31,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:16:31,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:16:31,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:16:31,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:16:31,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:16:31,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:16:31,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:16:31,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:16:31,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:16:31,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:16:31,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:16:31,167 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:16:31,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:16:31,167 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:16:31,167 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be67b078fbc5a0344bbc2977b42edb60a0a95dc77f0b12151b8c189fb28fd0c9 [2022-12-13 13:16:31,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:16:31,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:16:31,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:16:31,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:16:31,366 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:16:31,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_08_bad.i [2022-12-13 13:16:33,987 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:16:34,190 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:16:34,190 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_08_bad.i [2022-12-13 13:16:34,203 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/data/e4ca5481b/3bb3cbce2209495f9defa28fc9013185/FLAGcc8f85779 [2022-12-13 13:16:34,213 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/data/e4ca5481b/3bb3cbce2209495f9defa28fc9013185 [2022-12-13 13:16:34,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:16:34,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:16:34,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:16:34,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:16:34,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:16:34,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:34,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1325fa77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34, skipping insertion in model container [2022-12-13 13:16:34,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:34,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:16:34,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:16:34,497 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:16:34,786 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:16:34,790 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:16:34,792 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:16:34,794 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:16:34,794 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:16:34,812 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:16:34,816 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:16:34,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:16:34,825 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:16:34,839 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:16:34,871 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:16:34,872 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:16:34,873 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:16:34,875 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:16:34,875 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:16:34,879 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:16:34,880 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:16:34,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:16:34,975 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:16:34,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34 WrapperNode [2022-12-13 13:16:34,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:16:34,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:16:34,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:16:34,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:16:34,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,016 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2022-12-13 13:16:35,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:16:35,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:16:35,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:16:35,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:16:35,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:16:35,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:16:35,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:16:35,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:16:35,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (1/1) ... [2022-12-13 13:16:35,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:16:35,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:16:35,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:16:35,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:16:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 13:16:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 13:16:35,091 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 13:16:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:16:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 13:16:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:16:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:16:35,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:16:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2022-12-13 13:16:35,092 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2022-12-13 13:16:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:16:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 13:16:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:16:35,203 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:16:35,204 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:16:35,306 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:16:35,310 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:16:35,310 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:16:35,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:35 BoogieIcfgContainer [2022-12-13 13:16:35,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:16:35,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:16:35,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:16:35,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:16:35,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:16:34" (1/3) ... [2022-12-13 13:16:35,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f2de5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:16:35, skipping insertion in model container [2022-12-13 13:16:35,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:34" (2/3) ... [2022-12-13 13:16:35,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f2de5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:16:35, skipping insertion in model container [2022-12-13 13:16:35,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:35" (3/3) ... [2022-12-13 13:16:35,318 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_08_bad.i [2022-12-13 13:16:35,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:16:35,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:16:35,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:16:35,370 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=PETRI_NET, 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;@620473c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:16:35,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:16:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 13:16:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 13:16:35,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:16:35,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:35,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:16:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:35,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1996056410, now seen corresponding path program 1 times [2022-12-13 13:16:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:35,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248792000] [2022-12-13 13:16:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:35,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:16:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:35,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 13:16:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 13:16:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:16:35,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:35,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248792000] [2022-12-13 13:16:35,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248792000] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:16:35,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204169839] [2022-12-13 13:16:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:35,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:16:35,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:16:35,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:16:35,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:16:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:35,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:16:35,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:16:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:16:35,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:16:35,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204169839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:35,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:16:35,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 13:16:35,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637617856] [2022-12-13 13:16:35,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:35,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:16:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:35,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:16:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:16:35,796 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 13:16:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:16:35,830 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2022-12-13 13:16:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:16:35,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-12-13 13:16:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:16:35,839 INFO L225 Difference]: With dead ends: 44 [2022-12-13 13:16:35,840 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 13:16:35,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:16:35,846 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 9 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:16:35,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 74 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:16:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 13:16:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-12-13 13:16:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 13:16:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-12-13 13:16:35,882 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 21 [2022-12-13 13:16:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:16:35,883 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-12-13 13:16:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 13:16:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-12-13 13:16:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 13:16:35,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:16:35,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:35,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:16:36,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 13:16:36,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:16:36,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:36,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1748206499, now seen corresponding path program 1 times [2022-12-13 13:16:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:36,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070416701] [2022-12-13 13:16:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:36,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:16:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:36,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 13:16:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 13:16:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:16:36,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:36,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070416701] [2022-12-13 13:16:36,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070416701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:16:36,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347822914] [2022-12-13 13:16:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:36,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:16:36,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:16:36,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:16:36,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:16:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:36,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:16:36,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:16:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:16:36,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:16:36,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347822914] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:36,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:16:36,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 13:16:36,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802778135] [2022-12-13 13:16:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:36,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:16:36,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:16:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:16:36,396 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 13:16:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:16:36,407 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-12-13 13:16:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:16:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-12-13 13:16:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:16:36,408 INFO L225 Difference]: With dead ends: 31 [2022-12-13 13:16:36,408 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 13:16:36,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:16:36,410 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:16:36,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:16:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 13:16:36,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-13 13:16:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 13:16:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-12-13 13:16:36,415 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 22 [2022-12-13 13:16:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:16:36,415 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-12-13 13:16:36,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 13:16:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-12-13 13:16:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 13:16:36,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:16:36,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:36,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 13:16:36,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 13:16:36,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:16:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash 268010891, now seen corresponding path program 1 times [2022-12-13 13:16:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:36,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133306347] [2022-12-13 13:16:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:36,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:16:36,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:16:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:16:36,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:16:36,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:16:36,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 13:16:36,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 13:16:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:16:36,766 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 13:16:36,771 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:16:36,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:16:36 BoogieIcfgContainer [2022-12-13 13:16:36,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:16:36,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:16:36,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:16:36,795 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:16:36,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:35" (3/4) ... [2022-12-13 13:16:36,797 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:16:36,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:16:36,798 INFO L158 Benchmark]: Toolchain (without parser) took 2581.55ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 101.6MB in the beginning and 97.4MB in the end (delta: 4.2MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2022-12-13 13:16:36,798 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:16:36,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 758.52ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 101.6MB in the beginning and 124.0MB in the end (delta: -22.4MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2022-12-13 13:16:36,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.76ms. Allocated memory is still 169.9MB. Free memory was 124.0MB in the beginning and 120.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:16:36,799 INFO L158 Benchmark]: Boogie Preprocessor took 17.23ms. Allocated memory is still 169.9MB. Free memory was 120.8MB in the beginning and 119.8MB in the end (delta: 971.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:16:36,799 INFO L158 Benchmark]: RCFGBuilder took 277.82ms. Allocated memory is still 169.9MB. Free memory was 119.8MB in the beginning and 106.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 13:16:36,800 INFO L158 Benchmark]: TraceAbstraction took 1481.01ms. Allocated memory is still 169.9MB. Free memory was 105.2MB in the beginning and 98.4MB in the end (delta: 6.7MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-12-13 13:16:36,800 INFO L158 Benchmark]: Witness Printer took 2.80ms. Allocated memory is still 169.9MB. Free memory was 98.4MB in the beginning and 97.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:16:36,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 758.52ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 101.6MB in the beginning and 124.0MB in the end (delta: -22.4MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.76ms. Allocated memory is still 169.9MB. Free memory was 124.0MB in the beginning and 120.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.23ms. Allocated memory is still 169.9MB. Free memory was 120.8MB in the beginning and 119.8MB in the end (delta: 971.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 277.82ms. Allocated memory is still 169.9MB. Free memory was 119.8MB in the beginning and 106.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1481.01ms. Allocated memory is still 169.9MB. Free memory was 105.2MB in the beginning and 98.4MB in the end (delta: 6.7MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 2.80ms. Allocated memory is still 169.9MB. Free memory was 98.4MB in the beginning and 97.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1566. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1586] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1586] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741826:1073741831}, argv={1073741826:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1587] CALL CWE191_Integer_Underflow__int_fgets_predec_08_bad() [L1558] int data; [L1559] 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] [L1560] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; VAL [\result=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] RET staticReturnsTrue() 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, staticReturnsTrue()=1] [L1560] COND TRUE staticReturnsTrue() [L1563] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1566] data = atoi(inputBuffer) [L1563] 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] [L1574] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; VAL [\result=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] RET staticReturnsTrue() 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, staticReturnsTrue()=1] [L1574] COND TRUE staticReturnsTrue() [L1577] --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] - UnprovableResult [Line: 1577]: 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 3 procedures, 31 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 77 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 8/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:16:36,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_08_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash be67b078fbc5a0344bbc2977b42edb60a0a95dc77f0b12151b8c189fb28fd0c9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:16:38,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:16:38,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:16:38,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:16:38,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:16:38,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:16:38,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:16:38,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:16:38,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:16:38,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:16:38,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:16:38,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:16:38,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:16:38,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:16:38,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:16:38,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:16:38,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:16:38,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:16:38,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:16:38,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:16:38,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:16:38,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:16:38,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:16:38,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:16:38,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:16:38,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:16:38,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:16:38,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:16:38,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:16:38,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:16:38,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:16:38,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:16:38,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:16:38,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:16:38,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:16:38,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:16:38,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:16:38,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:16:38,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:16:38,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:16:38,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:16:38,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 13:16:38,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:16:38,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:16:38,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:16:38,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:16:38,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:16:38,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:16:38,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:16:38,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:16:38,508 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:16:38,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:16:38,508 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:16:38,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:16:38,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:16:38,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:16:38,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:16:38,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:16:38,509 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 13:16:38,509 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:16:38,509 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 13:16:38,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:16:38,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:16:38,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:16:38,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:16:38,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:16:38,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:16:38,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:16:38,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:16:38,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:16:38,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:16:38,510 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 13:16:38,510 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 13:16:38,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:16:38,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:16:38,511 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:16:38,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:16:38,511 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 13:16:38,511 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:16:38,511 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be67b078fbc5a0344bbc2977b42edb60a0a95dc77f0b12151b8c189fb28fd0c9 [2022-12-13 13:16:38,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:16:38,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:16:38,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:16:38,734 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:16:38,735 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:16:38,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_08_bad.i [2022-12-13 13:16:41,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:16:41,492 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:16:41,492 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_08_bad.i [2022-12-13 13:16:41,505 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/data/8e9468b84/c33b28a5f6c0473d84c97564488eb278/FLAG6ee4e3b10 [2022-12-13 13:16:41,517 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/data/8e9468b84/c33b28a5f6c0473d84c97564488eb278 [2022-12-13 13:16:41,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:16:41,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:16:41,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:16:41,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:16:41,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:16:41,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:16:41" (1/1) ... [2022-12-13 13:16:41,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4375c589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:41, skipping insertion in model container [2022-12-13 13:16:41,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:16:41" (1/1) ... [2022-12-13 13:16:41,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:16:41,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:16:41,789 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:16:42,054 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:16:42,058 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:16:42,059 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:16:42,061 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:16:42,061 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:16:42,078 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:16:42,082 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:16:42,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:16:42,094 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:16:42,111 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:16:42,156 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:16:42,157 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:16:42,158 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:16:42,160 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:16:42,161 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:16:42,164 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:16:42,165 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:16:42,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:16:42,251 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:16:42,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42 WrapperNode [2022-12-13 13:16:42,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:16:42,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:16:42,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:16:42,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:16:42,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,288 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-12-13 13:16:42,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:16:42,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:16:42,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:16:42,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:16:42,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:16:42,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:16:42,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:16:42,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:16:42,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (1/1) ... [2022-12-13 13:16:42,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:16:42,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:16:42,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:16:42,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:16:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 13:16:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 13:16:42,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 13:16:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:16:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 13:16:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:16:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:16:42,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:16:42,363 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2022-12-13 13:16:42,364 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2022-12-13 13:16:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:16:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 13:16:42,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 13:16:42,493 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:16:42,495 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:16:42,628 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:16:42,633 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:16:42,633 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:16:42,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:42 BoogieIcfgContainer [2022-12-13 13:16:42,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:16:42,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:16:42,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:16:42,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:16:42,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:16:41" (1/3) ... [2022-12-13 13:16:42,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c9ec61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:16:42, skipping insertion in model container [2022-12-13 13:16:42,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:42" (2/3) ... [2022-12-13 13:16:42,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c9ec61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:16:42, skipping insertion in model container [2022-12-13 13:16:42,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:42" (3/3) ... [2022-12-13 13:16:42,640 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_08_bad.i [2022-12-13 13:16:42,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:16:42,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:16:42,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:16:42,694 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=PETRI_NET, 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;@1109d0b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:16:42,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:16:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 13:16:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 13:16:42,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:16:42,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:42,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:16:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash -918563445, now seen corresponding path program 1 times [2022-12-13 13:16:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:16:42,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295054612] [2022-12-13 13:16:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:16:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:16:42,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:16:42,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 13:16:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:42,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:16:42,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:16:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:16:42,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:16:42,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:16:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295054612] [2022-12-13 13:16:42,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295054612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:42,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:16:42,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:16:42,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418738889] [2022-12-13 13:16:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:42,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:16:42,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:16:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:16:42,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:16:42,903 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 13:16:42,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:16:42,938 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2022-12-13 13:16:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:16:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-12-13 13:16:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:16:42,945 INFO L225 Difference]: With dead ends: 48 [2022-12-13 13:16:42,945 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 13:16:42,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:16:42,950 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:16:42,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:16:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 13:16:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 13:16:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 13:16:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-12-13 13:16:42,976 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 19 [2022-12-13 13:16:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:16:42,977 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-12-13 13:16:42,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 13:16:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-13 13:16:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 13:16:42,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:16:42,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:42,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:16:43,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:16:43,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:16:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:43,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1561712550, now seen corresponding path program 1 times [2022-12-13 13:16:43,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:16:43,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015115377] [2022-12-13 13:16:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:43,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:16:43,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:16:43,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:16:43,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 13:16:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:16:43,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:16:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:16:43,457 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 13:16:43,457 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:16:43,459 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 13:16:43,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 13:16:43,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 13:16:43,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:16:43,672 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 13:16:43,682 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:16:43,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:16:43 BoogieIcfgContainer [2022-12-13 13:16:43,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:16:43,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:16:43,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:16:43,760 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:16:43,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:42" (3/4) ... [2022-12-13 13:16:43,764 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:16:43,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:16:43,765 INFO L158 Benchmark]: Toolchain (without parser) took 2244.47ms. Allocated memory was 62.9MB in the beginning and 109.1MB in the end (delta: 46.1MB). Free memory was 30.6MB in the beginning and 70.9MB in the end (delta: -40.3MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2022-12-13 13:16:43,765 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:16:43,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 730.69ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 30.4MB in the beginning and 55.5MB in the end (delta: -25.1MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2022-12-13 13:16:43,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.79ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 52.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:16:43,767 INFO L158 Benchmark]: Boogie Preprocessor took 21.02ms. Allocated memory is still 90.2MB. Free memory was 52.2MB in the beginning and 50.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:16:43,768 INFO L158 Benchmark]: RCFGBuilder took 323.80ms. Allocated memory is still 90.2MB. Free memory was 50.1MB in the beginning and 61.0MB in the end (delta: -10.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 13:16:43,769 INFO L158 Benchmark]: TraceAbstraction took 1122.64ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 60.6MB in the beginning and 70.9MB in the end (delta: -10.4MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-12-13 13:16:43,769 INFO L158 Benchmark]: Witness Printer took 4.59ms. Allocated memory is still 109.1MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:16:43,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 730.69ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 30.4MB in the beginning and 55.5MB in the end (delta: -25.1MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.79ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 52.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.02ms. Allocated memory is still 90.2MB. Free memory was 52.2MB in the beginning and 50.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.80ms. Allocated memory is still 90.2MB. Free memory was 50.1MB in the beginning and 61.0MB in the end (delta: -10.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1122.64ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 60.6MB in the beginning and 70.9MB in the end (delta: -10.4MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Witness Printer took 4.59ms. Allocated memory is still 109.1MB. Free memory is still 70.9MB. 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1566. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1586] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1586] 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] [L1587] CALL CWE191_Integer_Underflow__int_fgets_predec_08_bad() [L1558] int data; [L1559] 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] [L1560] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; VAL [\result=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] RET staticReturnsTrue() 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, staticReturnsTrue()=1] [L1560] COND TRUE staticReturnsTrue() [L1563] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1566] data = atoi(inputBuffer) [L1563] 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] [L1574] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; VAL [\result=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] RET staticReturnsTrue() 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, staticReturnsTrue()=1] [L1574] COND TRUE staticReturnsTrue() [L1577] --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] - UnprovableResult [Line: 1577]: 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 3 procedures, 29 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:16:43,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5780b19d-d515-49f6-81d6-54bea7153c07/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample