./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R --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 7482029fded7ee13b4d79a454066f6d7b3a41325a996d5eb90d8682f421843f7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:56:26,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:56:26,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:56:26,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:56:26,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:56:26,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:56:26,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:56:26,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:56:26,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:56:26,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:56:26,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:56:26,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:56:26,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:56:26,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:56:26,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:56:26,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:56:26,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:56:26,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:56:26,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:56:26,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:56:26,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:56:26,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:56:26,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:56:26,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:56:26,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:56:26,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:56:26,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:56:26,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:56:26,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:56:26,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:56:26,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:56:26,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:56:26,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:56:26,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:56:26,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:56:26,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:56:26,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:56:26,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:56:26,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:56:26,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:56:26,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:56:26,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:56:26,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:56:26,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:56:26,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:56:26,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:56:26,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:56:26,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:56:26,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:56:26,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:56:26,158 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:56:26,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:56:26,159 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:56:26,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:56:26,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:56:26,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:56:26,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:56:26,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:56:26,160 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:56:26,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:56:26,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:56:26,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:56:26,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:56:26,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:56:26,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:56:26,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:56:26,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:56:26,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:56:26,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:56:26,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:56:26,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:56:26,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:56:26,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:56:26,165 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:56:26,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:56:26,166 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_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7482029fded7ee13b4d79a454066f6d7b3a41325a996d5eb90d8682f421843f7 [2022-11-25 17:56:26,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:56:26,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:56:26,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:56:26,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:56:26,442 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:56:26,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i [2022-11-25 17:56:29,611 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:56:30,073 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:56:30,073 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i [2022-11-25 17:56:30,105 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/data/e85cc6615/8860c704fa274ede87568b50f9508809/FLAGd4e2d7273 [2022-11-25 17:56:30,123 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/data/e85cc6615/8860c704fa274ede87568b50f9508809 [2022-11-25 17:56:30,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:56:30,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:56:30,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:56:30,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:56:30,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:56:30,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:56:30" (1/1) ... [2022-11-25 17:56:30,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb97b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:30, skipping insertion in model container [2022-11-25 17:56:30,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:56:30" (1/1) ... [2022-11-25 17:56:30,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:56:30,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:56:30,584 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:56:31,166 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:56:31,172 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:56:31,174 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:56:31,177 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:56:31,178 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:56:31,205 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:56:31,208 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:56:31,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:56:31,226 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:56:31,245 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:56:31,301 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:56:31,303 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:56:31,304 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:56:31,307 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:56:31,308 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:56:31,319 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:56:31,321 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:56:31,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:56:31,526 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:56:31,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31 WrapperNode [2022-11-25 17:56:31,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:56:31,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:56:31,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:56:31,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:56:31,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,618 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58 [2022-11-25 17:56:31,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:56:31,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:56:31,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:56:31,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:56:31,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:56:31,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:56:31,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:56:31,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:56:31,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (1/1) ... [2022-11-25 17:56:31,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:56:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:56:31,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:56:31,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:56:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:56:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:56:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:56:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:56:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 17:56:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:56:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:56:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:56:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:56:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:56:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:56:31,992 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:56:31,994 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:56:32,154 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:56:32,162 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:56:32,163 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:56:32,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:32 BoogieIcfgContainer [2022-11-25 17:56:32,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:56:32,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:56:32,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:56:32,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:56:32,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:56:30" (1/3) ... [2022-11-25 17:56:32,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5f8c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:56:32, skipping insertion in model container [2022-11-25 17:56:32,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:31" (2/3) ... [2022-11-25 17:56:32,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5f8c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:56:32, skipping insertion in model container [2022-11-25 17:56:32,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:32" (3/3) ... [2022-11-25 17:56:32,183 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i [2022-11-25 17:56:32,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:56:32,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:56:32,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:56:32,295 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;@3b5cc671, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:56:32,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:56:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:56:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:56:32,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:32,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:32,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:56:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:32,323 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-11-25 17:56:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:32,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972747910] [2022-11-25 17:56:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:32,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:56:32,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:56:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:56:32,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:56:32,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:56:32,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:56:32,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:56:32,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:56:32,611 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:56:32,616 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:56:32,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:56:32 BoogieIcfgContainer [2022-11-25 17:56:32,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:56:32,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:56:32,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:56:32,647 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:56:32,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:32" (3/4) ... [2022-11-25 17:56:32,653 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:56:32,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:56:32,654 INFO L158 Benchmark]: Toolchain (without parser) took 2521.57ms. Allocated memory is still 184.5MB. Free memory was 136.8MB in the beginning and 89.6MB in the end (delta: 47.2MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2022-11-25 17:56:32,654 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 142.6MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:56:32,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1395.12ms. Allocated memory is still 184.5MB. Free memory was 136.8MB in the beginning and 124.2MB in the end (delta: 12.6MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2022-11-25 17:56:32,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.05ms. Allocated memory is still 184.5MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:56:32,656 INFO L158 Benchmark]: Boogie Preprocessor took 55.14ms. Allocated memory is still 184.5MB. Free memory was 122.1MB in the beginning and 120.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:56:32,657 INFO L158 Benchmark]: RCFGBuilder took 494.87ms. Allocated memory is still 184.5MB. Free memory was 120.0MB in the beginning and 107.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:56:32,657 INFO L158 Benchmark]: TraceAbstraction took 473.00ms. Allocated memory is still 184.5MB. Free memory was 106.3MB in the beginning and 89.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:56:32,658 INFO L158 Benchmark]: Witness Printer took 5.95ms. Allocated memory is still 184.5MB. Free memory was 89.6MB in the beginning and 89.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:56:32,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 142.6MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1395.12ms. Allocated memory is still 184.5MB. Free memory was 136.8MB in the beginning and 124.2MB in the end (delta: 12.6MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.05ms. Allocated memory is still 184.5MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.14ms. Allocated memory is still 184.5MB. Free memory was 122.1MB in the beginning and 120.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.87ms. Allocated memory is still 184.5MB. Free memory was 120.0MB in the beginning and 107.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 473.00ms. Allocated memory is still 184.5MB. Free memory was 106.3MB in the beginning and 89.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.95ms. Allocated memory is still 184.5MB. Free memory was 89.6MB in the beginning and 89.6MB in the end (delta: 2.0kB). 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: 1582]: 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)=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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_52_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_postdec_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_52c_badSink(data) [L1582] data-- VAL [\old(data)=-2147483648, data=-2147483648, 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 17:56:32,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/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_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R --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 7482029fded7ee13b4d79a454066f6d7b3a41325a996d5eb90d8682f421843f7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:56:35,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:56:35,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:56:35,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:56:35,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:56:35,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:56:35,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:56:35,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:56:35,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:56:35,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:56:35,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:56:35,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:56:35,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:56:35,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:56:35,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:56:35,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:56:35,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:56:35,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:56:35,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:56:35,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:56:35,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:56:35,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:56:35,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:56:35,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:56:35,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:56:35,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:56:35,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:56:35,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:56:35,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:56:35,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:56:35,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:56:35,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:56:35,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:56:35,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:56:35,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:56:35,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:56:35,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:56:35,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:56:35,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:56:35,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:56:35,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:56:35,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 17:56:35,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:56:35,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:56:35,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:56:35,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:56:35,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:56:35,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:56:35,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:56:35,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:56:35,299 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:56:35,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:56:35,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:56:35,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:56:35,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:56:35,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:56:35,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:56:35,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:56:35,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:56:35,302 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:56:35,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:56:35,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:56:35,303 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:56:35,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:56:35,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:56:35,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:56:35,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:56:35,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:56:35,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:56:35,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:56:35,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:56:35,305 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:56:35,306 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:56:35,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:56:35,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:56:35,307 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:56:35,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:56:35,307 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:56:35,307 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_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7482029fded7ee13b4d79a454066f6d7b3a41325a996d5eb90d8682f421843f7 [2022-11-25 17:56:35,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:56:35,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:56:35,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:56:35,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:56:35,762 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:56:35,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i [2022-11-25 17:56:38,917 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:56:39,294 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:56:39,295 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i [2022-11-25 17:56:39,317 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/data/0343fa3a6/82a58803e1544e83b117cef137c090bc/FLAG84891d512 [2022-11-25 17:56:39,343 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/data/0343fa3a6/82a58803e1544e83b117cef137c090bc [2022-11-25 17:56:39,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:56:39,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:56:39,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:56:39,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:56:39,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:56:39,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:56:39" (1/1) ... [2022-11-25 17:56:39,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19cb0240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:39, skipping insertion in model container [2022-11-25 17:56:39,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:56:39" (1/1) ... [2022-11-25 17:56:39,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:56:39,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:56:39,853 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:56:40,356 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:56:40,363 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:56:40,367 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:56:40,378 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:56:40,379 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:56:40,405 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:56:40,408 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:56:40,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:56:40,430 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:56:40,462 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:56:40,536 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:56:40,538 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:56:40,539 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:56:40,541 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:56:40,542 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:56:40,547 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:56:40,548 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:56:40,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:56:40,701 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:56:40,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40 WrapperNode [2022-11-25 17:56:40,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:56:40,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:56:40,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:56:40,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:56:40,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,777 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 57 [2022-11-25 17:56:40,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:56:40,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:56:40,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:56:40,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:56:40,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:56:40,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:56:40,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:56:40,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:56:40,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (1/1) ... [2022-11-25 17:56:40,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:56:40,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:56:40,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:56:40,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:56:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:56:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:56:40,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:56:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:56:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:56:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:56:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:56:40,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:56:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:56:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:56:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 17:56:41,062 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:56:41,064 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:56:41,234 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:56:41,240 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:56:41,241 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:56:41,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:41 BoogieIcfgContainer [2022-11-25 17:56:41,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:56:41,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:56:41,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:56:41,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:56:41,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:56:39" (1/3) ... [2022-11-25 17:56:41,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672d1aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:56:41, skipping insertion in model container [2022-11-25 17:56:41,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:40" (2/3) ... [2022-11-25 17:56:41,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672d1aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:56:41, skipping insertion in model container [2022-11-25 17:56:41,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:41" (3/3) ... [2022-11-25 17:56:41,254 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_52_bad.i [2022-11-25 17:56:41,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:56:41,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:56:41,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:56:41,347 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;@ec62169, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:56:41,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:56:41,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:56:41,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:56:41,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:41,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:41,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:56:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-11-25 17:56:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:56:41,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472435219] [2022-11-25 17:56:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:41,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:56:41,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:56:41,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:56:41,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 17:56:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:56:41,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:56:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:56:41,765 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 17:56:41,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:56:41,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:56:41,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:56:41,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:56:42,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:56:42,009 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:56:42,020 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:56:42,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:56:42 BoogieIcfgContainer [2022-11-25 17:56:42,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:56:42,081 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:56:42,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:56:42,085 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:56:42,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:41" (3/4) ... [2022-11-25 17:56:42,090 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:56:42,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:56:42,094 INFO L158 Benchmark]: Toolchain (without parser) took 2745.88ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 43.7MB in the beginning and 66.7MB in the end (delta: -23.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-25 17:56:42,094 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:56:42,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1353.66ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 43.7MB in the beginning and 104.5MB in the end (delta: -60.8MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-11-25 17:56:42,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.12ms. Allocated memory is still 132.1MB. Free memory was 104.5MB in the beginning and 100.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:56:42,102 INFO L158 Benchmark]: Boogie Preprocessor took 32.27ms. Allocated memory is still 132.1MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:56:42,104 INFO L158 Benchmark]: RCFGBuilder took 431.63ms. Allocated memory is still 132.1MB. Free memory was 98.8MB in the beginning and 84.9MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:56:42,106 INFO L158 Benchmark]: TraceAbstraction took 834.04ms. Allocated memory is still 132.1MB. Free memory was 84.2MB in the beginning and 66.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:56:42,110 INFO L158 Benchmark]: Witness Printer took 11.43ms. Allocated memory is still 132.1MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:56:42,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1353.66ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 43.7MB in the beginning and 104.5MB in the end (delta: -60.8MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.12ms. Allocated memory is still 132.1MB. Free memory was 104.5MB in the beginning and 100.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.27ms. Allocated memory is still 132.1MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.63ms. Allocated memory is still 132.1MB. Free memory was 98.8MB in the beginning and 84.9MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 834.04ms. Allocated memory is still 132.1MB. Free memory was 84.2MB in the beginning and 66.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 11.43ms. Allocated memory is still 132.1MB. Free memory is still 66.7MB. 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: 1582]: 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_postdec_52_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_postdec_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_52c_badSink(data) [L1582] data-- VAL [\old(data)=-2147483648, data=-2147483648, 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 17:56:42,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5141f7-93d5-4e14-8fa6-7297f54241b0/bin/uautomizer-ZsLfNo2U6R/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