./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 --- 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 15:11:52,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:11:52,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:11:52,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:11:52,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:11:52,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:11:52,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:11:52,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:11:52,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:11:52,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:11:52,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:11:52,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:11:52,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:11:52,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:11:52,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:11:52,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:11:52,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:11:52,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:11:52,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:11:52,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:11:52,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:11:52,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:11:52,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:11:52,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:11:52,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:11:52,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:11:52,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:11:52,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:11:52,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:11:52,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:11:52,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:11:52,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:11:52,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:11:52,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:11:52,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:11:52,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:11:52,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:11:52,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:11:52,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:11:52,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:11:52,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:11:52,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 15:11:52,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:11:52,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:11:52,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:11:52,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:11:52,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:11:52,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:11:52,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:11:52,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:11:52,276 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:11:52,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:11:52,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:11:52,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:11:52,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:11:52,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:11:52,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:11:52,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:11:52,278 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:11:52,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:11:52,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:11:52,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:11:52,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:11:52,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:11:52,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:11:52,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:11:52,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:11:52,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:11:52,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:11:52,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:11:52,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:11:52,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:11:52,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:11:52,281 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:11:52,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:11:52,281 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:11:52,281 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_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 [2022-12-13 15:11:52,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:11:52,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:11:52,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:11:52,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:11:52,493 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:11:52,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2022-12-13 15:11:55,058 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:11:55,287 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:11:55,288 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2022-12-13 15:11:55,300 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/data/ebfe163c7/be8a90fdbd0b40baa0195c160910eacb/FLAG1e3bc9b61 [2022-12-13 15:11:55,311 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/data/ebfe163c7/be8a90fdbd0b40baa0195c160910eacb [2022-12-13 15:11:55,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:11:55,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:11:55,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:11:55,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:11:55,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:11:55,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:11:55" (1/1) ... [2022-12-13 15:11:55,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0a336e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:55, skipping insertion in model container [2022-12-13 15:11:55,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:11:55" (1/1) ... [2022-12-13 15:11:55,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:11:55,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:11:55,678 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:11:55,972 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:11:55,977 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 15:11:55,979 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 15:11:55,982 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 15:11:55,983 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 15:11:56,000 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 15:11:56,006 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 15:11:56,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:11:56,016 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:11:56,034 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:11:56,090 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:11:56,091 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 15:11:56,092 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 15:11:56,094 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 15:11:56,094 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 15:11:56,097 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 15:11:56,099 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 15:11:56,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:11:56,174 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:11:56,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56 WrapperNode [2022-12-13 15:11:56,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:11:56,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:11:56,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:11:56,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:11:56,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,211 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2022-12-13 15:11:56,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:11:56,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:11:56,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:11:56,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:11:56,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,228 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:11:56,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:11:56,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:11:56,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:11:56,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (1/1) ... [2022-12-13 15:11:56,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:11:56,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:11:56,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:11:56,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:11:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 15:11:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 15:11:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 15:11:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:11:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 15:11:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:11:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:11:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:11:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:11:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 15:11:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:11:56,410 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:11:56,412 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:11:56,512 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:11:56,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:11:56,517 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:11:56,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:11:56 BoogieIcfgContainer [2022-12-13 15:11:56,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:11:56,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:11:56,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:11:56,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:11:56,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:11:55" (1/3) ... [2022-12-13 15:11:56,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d185b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:11:56, skipping insertion in model container [2022-12-13 15:11:56,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:11:56" (2/3) ... [2022-12-13 15:11:56,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d185b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:11:56, skipping insertion in model container [2022-12-13 15:11:56,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:11:56" (3/3) ... [2022-12-13 15:11:56,524 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2022-12-13 15:11:56,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:11:56,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 15:11:56,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:11:56,577 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;@1ed06f26, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:11:56,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 15:11:56,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 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 15:11:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 15:11:56,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:56,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:56,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 15:11:56,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1450936690, now seen corresponding path program 1 times [2022-12-13 15:11:56,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:56,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918345512] [2022-12-13 15:11:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:56,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 15:11:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:11:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:11:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:11:56,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918345512] [2022-12-13 15:11:56,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918345512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:11:56,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:11:56,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:11:56,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532507564] [2022-12-13 15:11:56,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:11:56,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:11:56,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:11:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:11:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:11:56,772 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:11:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:11:56,786 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-12-13 15:11:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:11:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-13 15:11:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:11:56,795 INFO L225 Difference]: With dead ends: 40 [2022-12-13 15:11:56,795 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 15:11:56,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:11:56,801 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:11:56,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:11:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 15:11:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 15:11:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:11:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-12-13 15:11:56,832 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-12-13 15:11:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:11:56,833 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-12-13 15:11:56,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:11:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-12-13 15:11:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 15:11:56,834 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:11:56,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:11:56,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:11:56,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 15:11:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:11:56,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1512851975, now seen corresponding path program 1 times [2022-12-13 15:11:56,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:11:56,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802976107] [2022-12-13 15:11:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:11:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:11:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:11:56,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:11:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:11:56,896 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:11:56,896 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:11:56,897 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 15:11:56,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 15:11:56,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:11:56,901 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:11:56,904 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:11:56,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:11:56 BoogieIcfgContainer [2022-12-13 15:11:56,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:11:56,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:11:56,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:11:56,922 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:11:56,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:11:56" (3/4) ... [2022-12-13 15:11:56,925 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 15:11:56,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:11:56,926 INFO L158 Benchmark]: Toolchain (without parser) took 1611.37ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 96.7MB in the beginning and 120.0MB in the end (delta: -23.3MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-12-13 15:11:56,926 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 117.5MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:11:56,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 859.93ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 96.3MB in the beginning and 102.4MB in the end (delta: -6.1MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-12-13 15:11:56,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.23ms. Allocated memory is still 172.0MB. Free memory was 102.4MB in the beginning and 99.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:11:56,927 INFO L158 Benchmark]: Boogie Preprocessor took 18.77ms. Allocated memory is still 172.0MB. Free memory was 99.2MB in the beginning and 97.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:11:56,927 INFO L158 Benchmark]: RCFGBuilder took 286.85ms. Allocated memory is still 172.0MB. Free memory was 97.1MB in the beginning and 84.6MB in the end (delta: 12.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 15:11:56,927 INFO L158 Benchmark]: TraceAbstraction took 401.92ms. Allocated memory is still 172.0MB. Free memory was 84.6MB in the beginning and 120.0MB in the end (delta: -35.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:11:56,928 INFO L158 Benchmark]: Witness Printer took 3.19ms. Allocated memory is still 172.0MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:11:56,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 117.5MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 859.93ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 96.3MB in the beginning and 102.4MB in the end (delta: -6.1MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.23ms. Allocated memory is still 172.0MB. Free memory was 102.4MB in the beginning and 99.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.77ms. Allocated memory is still 172.0MB. Free memory was 99.2MB in the beginning and 97.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 286.85ms. Allocated memory is still 172.0MB. Free memory was 97.1MB in the beginning and 84.6MB in the end (delta: 12.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 401.92ms. Allocated memory is still 172.0MB. Free memory was 84.6MB in the beginning and 120.0MB in the end (delta: -35.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.19ms. Allocated memory is still 172.0MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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] [L1580] 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) [L1580] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741828:1073741831}, argv={1073741828:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_postdec_16_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE 1 [L1570] data-- VAL [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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 27 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 15:11:56,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 --- 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 15:11:58,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:11:58,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:11:58,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:11:58,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:11:58,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:11:58,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:11:58,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:11:58,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:11:58,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:11:58,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:11:58,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:11:58,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:11:58,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:11:58,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:11:58,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:11:58,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:11:58,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:11:58,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:11:58,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:11:58,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:11:58,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:11:58,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:11:58,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:11:58,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:11:58,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:11:58,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:11:58,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:11:58,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:11:58,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:11:58,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:11:58,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:11:58,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:11:58,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:11:58,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:11:58,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:11:58,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:11:58,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:11:58,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:11:58,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:11:58,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:11:58,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 15:11:58,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:11:58,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:11:58,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:11:58,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:11:58,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:11:58,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:11:58,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:11:58,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:11:58,672 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:11:58,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:11:58,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:11:58,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:11:58,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:11:58,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:11:58,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:11:58,674 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:11:58,674 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 15:11:58,674 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:11:58,674 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 15:11:58,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:11:58,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:11:58,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:11:58,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:11:58,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:11:58,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:11:58,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:11:58,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:11:58,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:11:58,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:11:58,676 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 15:11:58,676 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 15:11:58,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:11:58,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:11:58,676 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:11:58,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:11:58,677 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 15:11:58,677 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:11:58,677 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_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 [2022-12-13 15:11:58,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:11:58,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:11:58,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:11:58,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:11:58,915 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:11:58,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2022-12-13 15:12:01,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:12:01,618 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:12:01,618 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2022-12-13 15:12:01,631 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/data/779be42bb/f91e9e84fd6c4f70a89f4d0f7e15a5f9/FLAGa68c0052b [2022-12-13 15:12:01,939 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/data/779be42bb/f91e9e84fd6c4f70a89f4d0f7e15a5f9 [2022-12-13 15:12:01,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:12:01,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:12:01,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:12:01,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:12:01,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:12:01,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2874e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:01, skipping insertion in model container [2022-12-13 15:12:01,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:12:01" (1/1) ... [2022-12-13 15:12:01,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:12:01,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:12:02,260 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:12:02,634 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:12:02,639 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 15:12:02,640 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 15:12:02,642 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 15:12:02,642 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 15:12:02,659 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 15:12:02,665 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 15:12:02,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:12:02,678 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:12:02,694 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:12:02,747 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:12:02,749 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 15:12:02,750 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 15:12:02,751 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 15:12:02,752 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 15:12:02,756 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 15:12:02,758 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 15:12:02,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:12:02,843 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:12:02,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02 WrapperNode [2022-12-13 15:12:02,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:12:02,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:12:02,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:12:02,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:12:02,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,889 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2022-12-13 15:12:02,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:12:02,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:12:02,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:12:02,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:12:02,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:12:02,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:12:02,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:12:02,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:12:02,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (1/1) ... [2022-12-13 15:12:02,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:12:02,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:12:02,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:12:02,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:12:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 15:12:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 15:12:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 15:12:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:12:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 15:12:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:12:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:12:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:12:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:12:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 15:12:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 15:12:03,084 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:12:03,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:12:03,193 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:12:03,198 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:12:03,198 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:12:03,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:12:03 BoogieIcfgContainer [2022-12-13 15:12:03,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:12:03,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:12:03,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:12:03,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:12:03,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:12:01" (1/3) ... [2022-12-13 15:12:03,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cfd531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:12:03, skipping insertion in model container [2022-12-13 15:12:03,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:12:02" (2/3) ... [2022-12-13 15:12:03,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cfd531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:12:03, skipping insertion in model container [2022-12-13 15:12:03,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:12:03" (3/3) ... [2022-12-13 15:12:03,207 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2022-12-13 15:12:03,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:12:03,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 15:12:03,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:12:03,279 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;@1cc9335c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:12:03,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 15:12:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 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 15:12:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 15:12:03,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:12:03,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:03,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 15:12:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1450936690, now seen corresponding path program 1 times [2022-12-13 15:12:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:12:03,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317520501] [2022-12-13 15:12:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:03,315 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 15:12:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:12:03,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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 15:12:03,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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 15:12:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:12:03,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 15:12:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:12:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:12:03,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:12:03,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 15:12:03,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317520501] [2022-12-13 15:12:03,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317520501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:12:03,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:12:03,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:12:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530715053] [2022-12-13 15:12:03,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:12:03,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:12:03,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 15:12:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:12:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:03,456 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:12:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:12:03,469 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2022-12-13 15:12:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:12:03,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-13 15:12:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:12:03,475 INFO L225 Difference]: With dead ends: 39 [2022-12-13 15:12:03,475 INFO L226 Difference]: Without dead ends: 15 [2022-12-13 15:12:03,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:12:03,479 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:12:03,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:12:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-13 15:12:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 15:12:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:12:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 15:12:03,502 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-13 15:12:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:12:03,503 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 15:12:03,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:12:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 15:12:03,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 15:12:03,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:12:03,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:12:03,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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 15:12:03,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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 15:12:03,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 15:12:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:12:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1512851975, now seen corresponding path program 1 times [2022-12-13 15:12:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 15:12:03,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275337105] [2022-12-13 15:12:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:12:03,711 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 15:12:03,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 15:12:03,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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 15:12:03,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 15:12:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:03,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:12:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:12:03,968 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 15:12:03,968 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:12:03,970 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 15:12:03,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 15:12:03,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-12-13 15:12:04,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/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 15:12:04,182 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 15:12:04,192 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:12:04,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:12:04 BoogieIcfgContainer [2022-12-13 15:12:04,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:12:04,257 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:12:04,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:12:04,257 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:12:04,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:12:03" (3/4) ... [2022-12-13 15:12:04,266 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 15:12:04,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:12:04,269 INFO L158 Benchmark]: Toolchain (without parser) took 2325.29ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.3MB in the beginning and 30.4MB in the end (delta: 11.9MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2022-12-13 15:12:04,270 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory is still 28.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:12:04,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 901.22ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.1MB in the beginning and 36.6MB in the end (delta: 5.5MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-12-13 15:12:04,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.29ms. Allocated memory is still 81.8MB. Free memory was 36.6MB in the beginning and 54.6MB in the end (delta: -18.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:12:04,274 INFO L158 Benchmark]: Boogie Preprocessor took 20.98ms. Allocated memory is still 81.8MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:12:04,275 INFO L158 Benchmark]: RCFGBuilder took 288.63ms. Allocated memory is still 81.8MB. Free memory was 52.5MB in the beginning and 38.1MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 15:12:04,277 INFO L158 Benchmark]: TraceAbstraction took 1053.69ms. Allocated memory is still 81.8MB. Free memory was 37.8MB in the beginning and 30.9MB in the end (delta: 7.0MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2022-12-13 15:12:04,278 INFO L158 Benchmark]: Witness Printer took 9.95ms. Allocated memory is still 81.8MB. Free memory was 30.9MB in the beginning and 30.4MB in the end (delta: 463.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:12:04,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory is still 28.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 901.22ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.1MB in the beginning and 36.6MB in the end (delta: 5.5MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.29ms. Allocated memory is still 81.8MB. Free memory was 36.6MB in the beginning and 54.6MB in the end (delta: -18.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.98ms. Allocated memory is still 81.8MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.63ms. Allocated memory is still 81.8MB. Free memory was 52.5MB in the beginning and 38.1MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1053.69ms. Allocated memory is still 81.8MB. Free memory was 37.8MB in the beginning and 30.9MB in the end (delta: 7.0MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Witness Printer took 9.95ms. Allocated memory is still 81.8MB. Free memory was 30.9MB in the beginning and 30.4MB in the end (delta: 463.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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] [L1580] 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) [L1580] 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] [L1581] CALL CWE191_Integer_Underflow__int_fgets_postdec_16_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE 1 [L1570] data-- VAL [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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 26 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 15:12:04,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07b602b-9c0e-4eb4-9a4c-9fff2fbe755d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample