./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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_9a524877-5b65-4b55-85ac-11052e66ecef/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 ba7498218d229ce55ff08f10e054cbf5ca2bbc040b3cb772c5bb6a6b7f724ee8 --- 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 17:42:08,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:42:08,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:42:08,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:42:08,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:42:08,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:42:08,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:42:08,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:42:08,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:42:08,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:42:08,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:42:08,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:42:08,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:42:08,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:42:08,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:42:08,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:42:08,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:42:08,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:42:08,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:42:08,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:42:08,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:42:08,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:42:08,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:42:08,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:42:08,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:42:08,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:42:08,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:42:08,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:42:08,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:42:08,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:42:08,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:42:08,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:42:08,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:42:08,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:42:08,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:42:08,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:42:08,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:42:08,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:42:08,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:42:08,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:42:08,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:42:08,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 17:42:08,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:42:08,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:42:08,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:42:08,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:42:08,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:42:08,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:42:08,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:42:08,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:42:08,794 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:42:08,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:42:08,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:42:08,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:42:08,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:42:08,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:42:08,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:42:08,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:42:08,796 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:42:08,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:42:08,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:42:08,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:42:08,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:42:08,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:42:08,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:42:08,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:42:08,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:42:08,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:42:08,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:42:08,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:42:08,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:42:08,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:42:08,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:42:08,799 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:42:08,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:42:08,799 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:42:08,799 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_9a524877-5b65-4b55-85ac-11052e66ecef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba7498218d229ce55ff08f10e054cbf5ca2bbc040b3cb772c5bb6a6b7f724ee8 [2022-12-13 17:42:08,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:42:09,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:42:09,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:42:09,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:42:09,020 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:42:09,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2022-12-13 17:42:11,627 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:42:11,849 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:42:11,849 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2022-12-13 17:42:11,862 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/data/8adcce8ff/2600b3cffa104683b2e02df7aea9e395/FLAG41a627c67 [2022-12-13 17:42:11,875 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/data/8adcce8ff/2600b3cffa104683b2e02df7aea9e395 [2022-12-13 17:42:11,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:42:11,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:42:11,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:42:11,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:42:11,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:42:11,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:42:11" (1/1) ... [2022-12-13 17:42:11,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1104617a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:11, skipping insertion in model container [2022-12-13 17:42:11,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:42:11" (1/1) ... [2022-12-13 17:42:11,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:42:11,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:42:12,157 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 17:42:12,436 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 17:42:12,440 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 17:42:12,442 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 17:42:12,444 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 17:42:12,444 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 17:42:12,459 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 17:42:12,463 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:42:12,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:42:12,471 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:42:12,484 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 17:42:12,515 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 17:42:12,516 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 17:42:12,517 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 17:42:12,519 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 17:42:12,519 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 17:42:12,523 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 17:42:12,524 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:42:12,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:42:12,611 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:42:12,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12 WrapperNode [2022-12-13 17:42:12,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:42:12,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:42:12,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:42:12,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:42:12,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,657 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-13 17:42:12,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:42:12,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:42:12,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:42:12,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:42:12,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,680 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:42:12,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:42:12,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:42:12,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:42:12,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (1/1) ... [2022-12-13 17:42:12,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:42:12,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:42:12,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:42:12,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:42:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 17:42:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 17:42:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 17:42:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:42:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 17:42:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:42:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:42:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:42:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:42:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 17:42:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:42:12,848 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:42:12,850 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:42:12,956 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:42:12,961 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:42:12,961 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:42:12,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:42:12 BoogieIcfgContainer [2022-12-13 17:42:12,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:42:12,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:42:12,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:42:12,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:42:12,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:42:11" (1/3) ... [2022-12-13 17:42:12,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422baffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:42:12, skipping insertion in model container [2022-12-13 17:42:12,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:12" (2/3) ... [2022-12-13 17:42:12,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422baffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:42:12, skipping insertion in model container [2022-12-13 17:42:12,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:42:12" (3/3) ... [2022-12-13 17:42:12,979 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2022-12-13 17:42:12,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:42:12,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 17:42:13,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:42:13,048 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;@71413eaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:42:13,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 17:42:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:42:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 17:42:13,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:42:13,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:42:13,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 17:42:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-13 17:42:13,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:13,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324187253] [2022-12-13 17:42:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:13,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:13,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:42:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:13,268 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 17:42:13,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:42:13,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324187253] [2022-12-13 17:42:13,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324187253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:13,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:13,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:42:13,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024070859] [2022-12-13 17:42:13,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:13,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:42:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:13,297 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 17:42:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:42:13,319 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-12-13 17:42:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 17:42:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:42:13,325 INFO L225 Difference]: With dead ends: 40 [2022-12-13 17:42:13,325 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 17:42:13,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:13,330 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:42:13,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:42:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 17:42:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 17:42:13,361 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 17:42:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-12-13 17:42:13,363 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-12-13 17:42:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:42:13,364 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-12-13 17:42:13,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 17:42:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-12-13 17:42:13,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:42:13,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:42:13,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:42:13,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:42:13,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 17:42:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-13 17:42:13,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:42:13,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794671984] [2022-12-13 17:42:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:13,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:42:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:13,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:42:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:13,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:42:13,436 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:42:13,437 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 17:42:13,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 17:42:13,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:42:13,441 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 17:42:13,444 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:42:13,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:42:13 BoogieIcfgContainer [2022-12-13 17:42:13,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:42:13,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:42:13,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:42:13,462 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:42:13,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:42:12" (3/4) ... [2022-12-13 17:42:13,465 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 17:42:13,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:42:13,465 INFO L158 Benchmark]: Toolchain (without parser) took 1586.62ms. Allocated memory was 123.7MB in the beginning and 157.3MB in the end (delta: 33.6MB). Free memory was 83.7MB in the beginning and 89.6MB in the end (delta: -5.8MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-12-13 17:42:13,465 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:42:13,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 731.54ms. Allocated memory is still 123.7MB. Free memory was 83.7MB in the beginning and 64.0MB in the end (delta: 19.7MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2022-12-13 17:42:13,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.73ms. Allocated memory is still 123.7MB. Free memory was 64.0MB in the beginning and 61.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:42:13,466 INFO L158 Benchmark]: Boogie Preprocessor took 23.52ms. Allocated memory is still 123.7MB. Free memory was 61.4MB in the beginning and 59.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:42:13,467 INFO L158 Benchmark]: RCFGBuilder took 280.50ms. Allocated memory is still 123.7MB. Free memory was 59.8MB in the beginning and 46.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 17:42:13,467 INFO L158 Benchmark]: TraceAbstraction took 488.86ms. Allocated memory is still 157.3MB. Free memory was 123.1MB in the beginning and 90.4MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-13 17:42:13,467 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 157.3MB. Free memory was 90.4MB in the beginning and 89.6MB in the end (delta: 834.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:42:13,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 731.54ms. Allocated memory is still 123.7MB. Free memory was 83.7MB in the beginning and 64.0MB in the end (delta: 19.7MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.73ms. Allocated memory is still 123.7MB. Free memory was 64.0MB in the beginning and 61.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.52ms. Allocated memory is still 123.7MB. Free memory was 61.4MB in the beginning and 59.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 280.50ms. Allocated memory is still 123.7MB. Free memory was 59.8MB in the beginning and 46.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 488.86ms. Allocated memory is still 157.3MB. Free memory was 123.1MB in the beginning and 90.4MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 2.77ms. Allocated memory is still 157.3MB. Free memory was 90.4MB in the beginning and 89.6MB in the end (delta: 834.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: 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] [L1578] 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) [L1578] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741826:1073741830}, argv={1073741826:1073741830}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_09_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 \read(GLOBAL_CONST_TRUE) [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] [L1566] COND TRUE \read(GLOBAL_CONST_TRUE) 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] [L1569] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 25 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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 17:42:13,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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_9a524877-5b65-4b55-85ac-11052e66ecef/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 ba7498218d229ce55ff08f10e054cbf5ca2bbc040b3cb772c5bb6a6b7f724ee8 --- 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 17:42:14,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:42:14,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:42:15,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:42:15,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:42:15,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:42:15,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:42:15,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:42:15,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:42:15,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:42:15,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:42:15,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:42:15,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:42:15,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:42:15,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:42:15,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:42:15,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:42:15,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:42:15,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:42:15,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:42:15,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:42:15,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:42:15,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:42:15,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:42:15,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:42:15,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:42:15,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:42:15,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:42:15,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:42:15,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:42:15,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:42:15,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:42:15,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:42:15,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:42:15,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:42:15,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:42:15,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:42:15,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:42:15,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:42:15,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:42:15,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:42:15,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 17:42:15,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:42:15,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:42:15,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:42:15,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:42:15,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:42:15,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:42:15,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:42:15,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:42:15,062 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:42:15,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:42:15,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:42:15,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:42:15,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:42:15,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:42:15,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:42:15,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:42:15,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 17:42:15,064 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:42:15,064 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 17:42:15,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:42:15,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:42:15,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:42:15,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:42:15,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:42:15,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:42:15,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:42:15,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:42:15,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:42:15,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:42:15,066 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 17:42:15,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 17:42:15,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:42:15,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:42:15,066 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:42:15,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:42:15,067 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 17:42:15,067 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:42:15,067 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_9a524877-5b65-4b55-85ac-11052e66ecef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba7498218d229ce55ff08f10e054cbf5ca2bbc040b3cb772c5bb6a6b7f724ee8 [2022-12-13 17:42:15,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:42:15,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:42:15,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:42:15,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:42:15,294 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:42:15,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2022-12-13 17:42:17,861 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:42:18,083 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:42:18,084 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2022-12-13 17:42:18,098 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/data/c7b00d93e/d79617cbfe3c449794cc7e9411ebe1ea/FLAG517a2fbad [2022-12-13 17:42:18,109 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/data/c7b00d93e/d79617cbfe3c449794cc7e9411ebe1ea [2022-12-13 17:42:18,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:42:18,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:42:18,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:42:18,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:42:18,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:42:18,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79718fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18, skipping insertion in model container [2022-12-13 17:42:18,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:42:18,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:42:18,393 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 17:42:18,704 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 17:42:18,708 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 17:42:18,710 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 17:42:18,711 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 17:42:18,712 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 17:42:18,726 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 17:42:18,730 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:42:18,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:42:18,741 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:42:18,754 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 17:42:18,787 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 17:42:18,788 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 17:42:18,789 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 17:42:18,790 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 17:42:18,791 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 17:42:18,794 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 17:42:18,795 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:42:18,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:42:18,881 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:42:18,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18 WrapperNode [2022-12-13 17:42:18,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:42:18,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:42:18,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:42:18,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:42:18,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,918 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-13 17:42:18,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:42:18,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:42:18,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:42:18,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:42:18,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:42:18,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:42:18,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:42:18,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:42:18,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (1/1) ... [2022-12-13 17:42:18,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:42:18,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:42:18,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:42:18,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:42:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 17:42:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 17:42:19,002 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 17:42:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:42:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 17:42:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:42:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:42:19,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:42:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:42:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 17:42:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 17:42:19,133 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:42:19,134 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:42:19,249 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:42:19,255 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:42:19,255 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:42:19,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:42:19 BoogieIcfgContainer [2022-12-13 17:42:19,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:42:19,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:42:19,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:42:19,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:42:19,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:42:18" (1/3) ... [2022-12-13 17:42:19,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4b5a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:42:19, skipping insertion in model container [2022-12-13 17:42:19,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:42:18" (2/3) ... [2022-12-13 17:42:19,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4b5a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:42:19, skipping insertion in model container [2022-12-13 17:42:19,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:42:19" (3/3) ... [2022-12-13 17:42:19,265 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2022-12-13 17:42:19,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:42:19,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 17:42:19,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:42:19,334 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;@3f67a362, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:42:19,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 17:42:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:42:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 17:42:19,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:42:19,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:42:19,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 17:42:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-13 17:42:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:42:19,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054860633] [2022-12-13 17:42:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:19,358 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 17:42:19,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:42:19,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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 17:42:19,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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 17:42:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:42:19,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:42:19,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:42:19,502 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 17:42:19,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:42:19,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:42:19,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054860633] [2022-12-13 17:42:19,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054860633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:42:19,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:42:19,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:42:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478434157] [2022-12-13 17:42:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:42:19,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:42:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:42:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:42:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:19,535 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:42:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:42:19,562 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-12-13 17:42:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:42:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-13 17:42:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:42:19,568 INFO L225 Difference]: With dead ends: 39 [2022-12-13 17:42:19,568 INFO L226 Difference]: Without dead ends: 15 [2022-12-13 17:42:19,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:42:19,572 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:42:19,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:42:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-13 17:42:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 17:42:19,601 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 17:42:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 17:42:19,603 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-13 17:42:19,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:42:19,603 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 17:42:19,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:42:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 17:42:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:42:19,604 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:42:19,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:42:19,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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 17:42:19,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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 17:42:19,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 17:42:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:42:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-13 17:42:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:42:19,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961858497] [2022-12-13 17:42:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:42:19,812 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 17:42:19,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:42:19,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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 17:42:19,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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 17:42:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:20,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:42:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:42:20,067 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 17:42:20,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:42:20,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 17:42:20,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 17:42:20,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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 17:42:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/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 17:42:20,282 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 17:42:20,293 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:42:20,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:42:20 BoogieIcfgContainer [2022-12-13 17:42:20,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:42:20,356 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:42:20,356 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:42:20,356 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:42:20,357 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:42:19" (3/4) ... [2022-12-13 17:42:20,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 17:42:20,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:42:20,368 INFO L158 Benchmark]: Toolchain (without parser) took 2254.48ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 51.2MB in the end (delta: 14.4MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-12-13 17:42:20,369 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:42:20,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.47ms. Allocated memory is still 90.2MB. Free memory was 65.3MB in the beginning and 47.0MB in the end (delta: 18.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-12-13 17:42:20,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.04ms. Allocated memory is still 90.2MB. Free memory was 47.0MB in the beginning and 44.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:42:20,372 INFO L158 Benchmark]: Boogie Preprocessor took 33.07ms. Allocated memory is still 90.2MB. Free memory was 44.2MB in the beginning and 42.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:42:20,373 INFO L158 Benchmark]: RCFGBuilder took 304.73ms. Allocated memory is still 90.2MB. Free memory was 42.1MB in the beginning and 56.1MB in the end (delta: -14.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-12-13 17:42:20,374 INFO L158 Benchmark]: TraceAbstraction took 1094.74ms. Allocated memory is still 90.2MB. Free memory was 55.1MB in the beginning and 51.7MB in the end (delta: 3.4MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-12-13 17:42:20,376 INFO L158 Benchmark]: Witness Printer took 10.18ms. Allocated memory is still 90.2MB. Free memory was 51.7MB in the beginning and 51.2MB in the end (delta: 524.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:42:20,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 768.47ms. Allocated memory is still 90.2MB. Free memory was 65.3MB in the beginning and 47.0MB in the end (delta: 18.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.04ms. Allocated memory is still 90.2MB. Free memory was 47.0MB in the beginning and 44.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.07ms. Allocated memory is still 90.2MB. Free memory was 44.2MB in the beginning and 42.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.73ms. Allocated memory is still 90.2MB. Free memory was 42.1MB in the beginning and 56.1MB in the end (delta: -14.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1094.74ms. Allocated memory is still 90.2MB. Free memory was 55.1MB in the beginning and 51.7MB in the end (delta: 3.4MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 10.18ms. Allocated memory is still 90.2MB. Free memory was 51.7MB in the beginning and 51.2MB in the end (delta: 524.5kB). 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: 1569]: 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] [L1578] 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) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_09_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 \read(GLOBAL_CONST_TRUE) [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] [L1566] COND TRUE \read(GLOBAL_CONST_TRUE) 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] [L1569] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 17:42:20,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a524877-5b65-4b55-85ac-11052e66ecef/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample