./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_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_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 --- 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 11:24:39,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:24:39,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:24:39,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:24:39,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:24:39,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:24:39,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:24:39,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:24:39,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:24:39,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:24:39,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:24:39,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:24:39,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:24:39,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:24:39,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:24:39,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:24:39,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:24:39,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:24:39,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:24:39,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:24:39,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:24:39,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:24:39,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:24:39,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:24:39,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:24:39,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:24:39,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:24:39,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:24:39,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:24:39,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:24:39,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:24:39,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:24:39,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:24:39,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:24:39,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:24:39,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:24:39,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:24:39,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:24:39,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:24:39,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:24:39,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:24:39,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 11:24:39,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:24:39,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:24:39,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:24:39,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:24:39,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:24:39,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:24:39,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:24:39,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:24:39,117 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:24:39,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:24:39,118 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:24:39,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:24:39,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:24:39,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:24:39,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:24:39,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:24:39,119 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:24:39,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:24:39,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:24:39,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:24:39,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:24:39,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:24:39,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:24:39,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:24:39,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:24:39,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:24:39,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:24:39,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:24:39,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:24:39,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:24:39,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:24:39,121 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:24:39,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:24:39,121 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:24:39,121 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_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 [2022-12-13 11:24:39,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:24:39,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:24:39,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:24:39,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:24:39,320 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:24:39,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-13 11:24:41,873 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:24:42,135 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:24:42,135 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-13 11:24:42,153 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/data/6edb4b55d/a1af84be4ebe4664a972202dc496a6bb/FLAG4073faae0 [2022-12-13 11:24:42,427 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/data/6edb4b55d/a1af84be4ebe4664a972202dc496a6bb [2022-12-13 11:24:42,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:24:42,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:24:42,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:24:42,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:24:42,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:24:42,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:24:42" (1/1) ... [2022-12-13 11:24:42,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a806a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:42, skipping insertion in model container [2022-12-13 11:24:42,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:24:42" (1/1) ... [2022-12-13 11:24:42,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:24:42,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:24:42,679 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 11:24:42,973 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:24:42,977 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:24:42,980 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:24:42,982 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:24:42,983 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:24:43,004 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 11:24:43,006 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 11:24:43,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:24:43,017 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:24:43,033 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 11:24:43,075 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:24:43,077 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:24:43,078 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:24:43,080 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:24:43,081 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:24:43,085 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 11:24:43,087 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 11:24:43,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:24:43,191 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:24:43,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43 WrapperNode [2022-12-13 11:24:43,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:24:43,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:24:43,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:24:43,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:24:43,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,236 INFO L138 Inliner]: procedures = 501, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2022-12-13 11:24:43,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:24:43,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:24:43,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:24:43,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:24:43,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:24:43,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:24:43,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:24:43,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:24:43,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (1/1) ... [2022-12-13 11:24:43,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:24:43,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:43,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:24:43,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:24:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 11:24:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 11:24:43,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 11:24:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:24:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 11:24:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:24:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:24:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:24:43,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:24:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:24:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 11:24:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:24:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:24:43,442 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:24:43,444 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:24:43,559 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:24:43,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:24:43,563 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:24:43,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:24:43 BoogieIcfgContainer [2022-12-13 11:24:43,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:24:43,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:24:43,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:24:43,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:24:43,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:24:42" (1/3) ... [2022-12-13 11:24:43,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fd5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:24:43, skipping insertion in model container [2022-12-13 11:24:43,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:43" (2/3) ... [2022-12-13 11:24:43,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fd5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:24:43, skipping insertion in model container [2022-12-13 11:24:43,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:24:43" (3/3) ... [2022-12-13 11:24:43,571 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-13 11:24:43,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:24:43,585 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:24:43,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:24:43,642 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;@2e950f39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:24:43,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 11:24:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:24:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 11:24:43,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:43,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:43,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 11:24:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-13 11:24:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:43,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913467431] [2022-12-13 11:24:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:24:43,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:24:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:24:43,849 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:24:43,850 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:24:43,851 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 11:24:43,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 11:24:43,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:24:43,857 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 11:24:43,860 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:24:43,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:24:43 BoogieIcfgContainer [2022-12-13 11:24:43,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:24:43,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:24:43,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:24:43,885 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:24:43,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:24:43" (3/4) ... [2022-12-13 11:24:43,888 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 11:24:43,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:24:43,889 INFO L158 Benchmark]: Toolchain (without parser) took 1458.99ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 98.4MB in the beginning and 109.4MB in the end (delta: -11.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-12-13 11:24:43,889 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:24:43,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 761.58ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 98.1MB in the beginning and 98.6MB in the end (delta: -496.0kB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2022-12-13 11:24:43,890 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.41ms. Allocated memory is still 157.3MB. Free memory was 98.6MB in the beginning and 95.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:24:43,891 INFO L158 Benchmark]: Boogie Preprocessor took 23.92ms. Allocated memory is still 157.3MB. Free memory was 95.8MB in the beginning and 94.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:24:43,892 INFO L158 Benchmark]: RCFGBuilder took 303.14ms. Allocated memory is still 157.3MB. Free memory was 93.7MB in the beginning and 79.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 11:24:43,892 INFO L158 Benchmark]: TraceAbstraction took 317.40ms. Allocated memory is still 157.3MB. Free memory was 79.7MB in the beginning and 109.4MB in the end (delta: -29.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:24:43,892 INFO L158 Benchmark]: Witness Printer took 3.62ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 109.4MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:24:43,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 761.58ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 98.1MB in the beginning and 98.6MB in the end (delta: -496.0kB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.41ms. Allocated memory is still 157.3MB. Free memory was 98.6MB in the beginning and 95.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.92ms. Allocated memory is still 157.3MB. Free memory was 95.8MB in the beginning and 94.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 303.14ms. Allocated memory is still 157.3MB. Free memory was 93.7MB in the beginning and 79.7MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 317.40ms. Allocated memory is still 157.3MB. Free memory was 79.7MB in the beginning and 109.4MB in the end (delta: -29.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.62ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 109.4MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741833, argc=1073741833, argv={1073741827:1073741834}, argv={1073741827:1073741834}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] --data VAL [data=-2147483648, dataPtr={7:0}, dataPtr={7:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 11:24:43,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 --- 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 11:24:45,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:24:45,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:24:45,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:24:45,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:24:45,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:24:45,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:24:45,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:24:45,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:24:45,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:24:45,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:24:45,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:24:45,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:24:45,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:24:45,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:24:45,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:24:45,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:24:45,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:24:45,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:24:45,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:24:45,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:24:45,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:24:45,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:24:45,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:24:45,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:24:45,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:24:45,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:24:45,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:24:45,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:24:45,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:24:45,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:24:45,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:24:45,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:24:45,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:24:45,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:24:45,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:24:45,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:24:45,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:24:45,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:24:45,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:24:45,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:24:45,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 11:24:45,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:24:45,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:24:45,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:24:45,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:24:45,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:24:45,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:24:45,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:24:45,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:24:45,555 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:24:45,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:24:45,556 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 11:24:45,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:24:45,557 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:24:45,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:24:45,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:24:45,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:24:45,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:24:45,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:24:45,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:24:45,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 11:24:45,558 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:24:45,558 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_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 [2022-12-13 11:24:45,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:24:45,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:24:45,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:24:45,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:24:45,784 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:24:45,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-13 11:24:48,402 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:24:48,625 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:24:48,625 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-13 11:24:48,639 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/data/e43483f8b/0ffda747225144359778b10e9258abb7/FLAG3ce0a5941 [2022-12-13 11:24:48,649 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/data/e43483f8b/0ffda747225144359778b10e9258abb7 [2022-12-13 11:24:48,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:24:48,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:24:48,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:24:48,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:24:48,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:24:48,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:24:48" (1/1) ... [2022-12-13 11:24:48,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0c4587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:48, skipping insertion in model container [2022-12-13 11:24:48,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:24:48" (1/1) ... [2022-12-13 11:24:48,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:24:48,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:24:48,934 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 11:24:49,239 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:24:49,243 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:24:49,244 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:24:49,245 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:24:49,246 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:24:49,260 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 11:24:49,262 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 11:24:49,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:24:49,276 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:24:49,289 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 11:24:49,322 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:24:49,323 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:24:49,324 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:24:49,326 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:24:49,326 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:24:49,329 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 11:24:49,330 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 11:24:49,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:24:49,436 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:24:49,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49 WrapperNode [2022-12-13 11:24:49,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:24:49,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:24:49,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:24:49,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:24:49,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,474 INFO L138 Inliner]: procedures = 506, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-12-13 11:24:49,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:24:49,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:24:49,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:24:49,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:24:49,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:24:49,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:24:49,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:24:49,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:24:49,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (1/1) ... [2022-12-13 11:24:49,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:24:49,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:49,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:24:49,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:24:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 11:24:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 11:24:49,559 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 11:24:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:24:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 11:24:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:24:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:24:49,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:24:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 11:24:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:24:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 11:24:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 11:24:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 11:24:49,678 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:24:49,680 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:24:49,848 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:24:49,854 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:24:49,854 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:24:49,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:24:49 BoogieIcfgContainer [2022-12-13 11:24:49,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:24:49,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:24:49,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:24:49,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:24:49,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:24:48" (1/3) ... [2022-12-13 11:24:49,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f622952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:24:49, skipping insertion in model container [2022-12-13 11:24:49,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:24:49" (2/3) ... [2022-12-13 11:24:49,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f622952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:24:49, skipping insertion in model container [2022-12-13 11:24:49,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:24:49" (3/3) ... [2022-12-13 11:24:49,865 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-13 11:24:49,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:24:49,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:24:49,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:24:49,931 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;@13d32d85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:24:49,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 11:24:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:24:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 11:24:49,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:49,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:49,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 11:24:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:49,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-13 11:24:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:24:49,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022015356] [2022-12-13 11:24:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:49,960 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 11:24:49,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:24:49,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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 11:24:49,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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 11:24:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:24:50,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:24:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:24:50,186 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 11:24:50,188 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:24:50,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 11:24:50,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 11:24:50,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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 11:24:50,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/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 11:24:50,407 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 11:24:50,425 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:24:50,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:24:50 BoogieIcfgContainer [2022-12-13 11:24:50,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:24:50,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:24:50,493 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:24:50,493 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:24:50,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:24:49" (3/4) ... [2022-12-13 11:24:50,497 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 11:24:50,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:24:50,499 INFO L158 Benchmark]: Toolchain (without parser) took 1845.64ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 46.3MB in the beginning and 36.6MB in the end (delta: 9.7MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-12-13 11:24:50,499 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 50.3MB. Free memory was 28.4MB in the beginning and 28.4MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:24:50,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 783.49ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 46.1MB in the beginning and 52.9MB in the end (delta: -6.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2022-12-13 11:24:50,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.47ms. Allocated memory is still 86.0MB. Free memory was 52.9MB in the beginning and 50.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:24:50,501 INFO L158 Benchmark]: Boogie Preprocessor took 21.43ms. Allocated memory is still 86.0MB. Free memory was 50.0MB in the beginning and 47.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:24:50,502 INFO L158 Benchmark]: RCFGBuilder took 359.44ms. Allocated memory is still 86.0MB. Free memory was 47.9MB in the beginning and 56.3MB in the end (delta: -8.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 11:24:50,502 INFO L158 Benchmark]: TraceAbstraction took 633.12ms. Allocated memory is still 86.0MB. Free memory was 55.4MB in the beginning and 37.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 11:24:50,503 INFO L158 Benchmark]: Witness Printer took 4.83ms. Allocated memory is still 86.0MB. Free memory was 37.0MB in the beginning and 36.6MB in the end (delta: 454.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:24:50,506 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 50.3MB. Free memory was 28.4MB in the beginning and 28.4MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 783.49ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 46.1MB in the beginning and 52.9MB in the end (delta: -6.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.47ms. Allocated memory is still 86.0MB. Free memory was 52.9MB in the beginning and 50.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.43ms. Allocated memory is still 86.0MB. Free memory was 50.0MB in the beginning and 47.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 359.44ms. Allocated memory is still 86.0MB. Free memory was 47.9MB in the beginning and 56.3MB in the end (delta: -8.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 633.12ms. Allocated memory is still 86.0MB. Free memory was 55.4MB in the beginning and 37.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.83ms. Allocated memory is still 86.0MB. Free memory was 37.0MB in the beginning and 36.6MB in the end (delta: 454.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] --data VAL [data=-2147483648, dataPtr={15:0}, dataPtr={15:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 11:24:50,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929cbd23-b1b7-40b4-93e9-0c2b819fcb61/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample