./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 48a41c0e13fab0abc4e4e5a72fc263bc2626d7943e50b4922663928007feb57c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:01:03,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:01:03,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:01:03,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:01:03,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:01:03,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:01:03,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:01:03,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:01:03,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:01:03,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:01:03,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:01:03,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:01:03,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:01:03,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:01:03,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:01:03,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:01:03,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:01:03,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:01:03,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:01:03,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:01:03,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:01:03,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:01:03,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:01:03,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:01:03,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:01:03,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:01:03,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:01:03,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:01:03,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:01:03,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:01:03,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:01:03,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:01:03,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:01:03,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:01:03,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:01:03,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:01:03,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:01:03,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:01:03,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:01:03,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:01:03,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:01:03,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 18:01:03,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:01:03,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:01:03,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:01:03,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:01:03,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:01:03,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:01:03,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:01:03,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:01:03,728 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:01:03,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:01:03,729 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:01:03,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:01:03,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:01:03,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:01:03,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:01:03,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:01:03,731 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:01:03,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:01:03,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:01:03,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:01:03,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:01:03,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:01:03,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:01:03,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:01:03,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:01:03,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:01:03,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:01:03,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:01:03,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:01:03,734 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:01:03,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:01:03,735 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:01:03,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:01:03,735 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_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a41c0e13fab0abc4e4e5a72fc263bc2626d7943e50b4922663928007feb57c [2022-11-25 18:01:03,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:01:04,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:01:04,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:01:04,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:01:04,028 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:01:04,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i [2022-11-25 18:01:07,006 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:01:07,437 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:01:07,437 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i [2022-11-25 18:01:07,458 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/data/12bd7b780/85ea04247acc46278c34afd190b8d4b9/FLAG67c44f929 [2022-11-25 18:01:07,474 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/data/12bd7b780/85ea04247acc46278c34afd190b8d4b9 [2022-11-25 18:01:07,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:01:07,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:01:07,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:01:07,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:01:07,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:01:07,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:01:07" (1/1) ... [2022-11-25 18:01:07,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744fe8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:07, skipping insertion in model container [2022-11-25 18:01:07,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:01:07" (1/1) ... [2022-11-25 18:01:07,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:01:07,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:01:07,907 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:01:08,434 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:01:08,443 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:01:08,449 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:01:08,462 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:01:08,464 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:01:08,513 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:01:08,523 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:01:08,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:01:08,545 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:01:08,586 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:01:08,677 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:01:08,679 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:01:08,681 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:01:08,688 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:01:08,689 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:01:08,695 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:01:08,696 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:01:08,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:01:08,894 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:01:08,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08 WrapperNode [2022-11-25 18:01:08,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:01:08,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:01:08,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:01:08,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:01:08,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:08,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:08,986 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-11-25 18:01:08,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:01:08,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:01:08,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:01:08,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:01:08,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:08,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:09,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:09,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:09,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:09,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:09,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:09,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:09,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:01:09,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:01:09,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:01:09,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:01:09,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (1/1) ... [2022-11-25 18:01:09,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:01:09,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:01:09,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:01:09,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:01:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 18:01:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 18:01:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 18:01:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:01:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 18:01:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:01:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:01:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:01:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:01:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 18:01:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:01:09,256 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:01:09,259 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:01:09,487 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:01:09,493 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:01:09,493 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:01:09,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:01:09 BoogieIcfgContainer [2022-11-25 18:01:09,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:01:09,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:01:09,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:01:09,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:01:09,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:01:07" (1/3) ... [2022-11-25 18:01:09,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3798a8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:01:09, skipping insertion in model container [2022-11-25 18:01:09,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:08" (2/3) ... [2022-11-25 18:01:09,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3798a8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:01:09, skipping insertion in model container [2022-11-25 18:01:09,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:01:09" (3/3) ... [2022-11-25 18:01:09,505 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i [2022-11-25 18:01:09,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:01:09,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:01:09,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:01:09,583 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;@28f9bf8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:01:09,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:01:09,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:01:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 18:01:09,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:09,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:09,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 18:01:09,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2022-11-25 18:01:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:09,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729158307] [2022-11-25 18:01:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:09,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:01:09,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:01:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:01:09,828 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:01:09,831 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:01:09,832 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 18:01:09,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 18:01:09,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:01:09,841 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:01:09,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:01:09,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:01:09 BoogieIcfgContainer [2022-11-25 18:01:09,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:01:09,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:01:09,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:01:09,897 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:01:09,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:01:09" (3/4) ... [2022-11-25 18:01:09,901 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:01:09,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:01:09,904 INFO L158 Benchmark]: Toolchain (without parser) took 2424.75ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 118.3MB in the beginning and 137.1MB in the end (delta: -18.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-25 18:01:09,905 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:01:09,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1416.77ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 117.7MB in the beginning and 173.7MB in the end (delta: -56.1MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. [2022-11-25 18:01:09,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.40ms. Allocated memory is still 216.0MB. Free memory was 173.7MB in the beginning and 170.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:01:09,907 INFO L158 Benchmark]: Boogie Preprocessor took 28.47ms. Allocated memory is still 216.0MB. Free memory was 170.7MB in the beginning and 169.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:01:09,908 INFO L158 Benchmark]: RCFGBuilder took 479.59ms. Allocated memory is still 216.0MB. Free memory was 169.6MB in the beginning and 154.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:01:09,908 INFO L158 Benchmark]: TraceAbstraction took 397.60ms. Allocated memory is still 216.0MB. Free memory was 153.9MB in the beginning and 137.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 18:01:09,909 INFO L158 Benchmark]: Witness Printer took 5.00ms. Allocated memory is still 216.0MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:01:09,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1416.77ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 117.7MB in the beginning and 173.7MB in the end (delta: -56.1MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.40ms. Allocated memory is still 216.0MB. Free memory was 173.7MB in the beginning and 170.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.47ms. Allocated memory is still 216.0MB. Free memory was 170.7MB in the beginning and 169.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 479.59ms. Allocated memory is still 216.0MB. Free memory was 169.6MB in the beginning and 154.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 397.60ms. Allocated memory is still 216.0MB. Free memory was 153.9MB in the beginning and 137.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.00ms. Allocated memory is still 216.0MB. Free memory is still 137.1MB. 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: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. 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); [L1548] static int badStatic = 0; VAL [badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL printLine("Calling bad()...") VAL [badStatic=0, 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741826:1073741831}, argv={1073741826:1073741831}, badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_21_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1575] badStatic = 1 [L1576] CALL badSink(data) [L1551] COND TRUE \read(badStatic) [L1554] data-- VAL [\old(data)=-2147483648, badStatic=1, data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 18:01:09,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 48a41c0e13fab0abc4e4e5a72fc263bc2626d7943e50b4922663928007feb57c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:01:12,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:01:12,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:01:12,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:01:12,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:01:12,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:01:12,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:01:12,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:01:12,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:01:12,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:01:12,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:01:12,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:01:12,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:01:12,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:01:12,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:01:12,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:01:12,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:01:12,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:01:12,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:01:12,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:01:12,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:01:12,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:01:12,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:01:12,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:01:12,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:01:12,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:01:12,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:01:12,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:01:12,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:01:12,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:01:12,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:01:12,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:01:12,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:01:12,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:01:12,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:01:12,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:01:12,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:01:12,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:01:12,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:01:12,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:01:12,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:01:12,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 18:01:12,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:01:12,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:01:12,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:01:12,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:01:12,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:01:12,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:01:12,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:01:12,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:01:12,646 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:01:12,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:01:12,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:01:12,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:01:12,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:01:12,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:01:12,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:01:12,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:01:12,649 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:01:12,650 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:01:12,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:01:12,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:01:12,650 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:01:12,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:01:12,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:01:12,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:01:12,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:01:12,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:01:12,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:01:12,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:01:12,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:01:12,653 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:01:12,653 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:01:12,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:01:12,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:01:12,654 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:01:12,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:01:12,655 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:01:12,655 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_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a41c0e13fab0abc4e4e5a72fc263bc2626d7943e50b4922663928007feb57c [2022-11-25 18:01:13,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:01:13,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:01:13,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:01:13,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:01:13,114 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:01:13,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i [2022-11-25 18:01:16,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:01:16,572 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:01:16,573 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i [2022-11-25 18:01:16,603 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/data/5aa40ddf4/e76a44c68af54ccbb7d56b1f1bb18f4c/FLAG67279d833 [2022-11-25 18:01:16,629 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/data/5aa40ddf4/e76a44c68af54ccbb7d56b1f1bb18f4c [2022-11-25 18:01:16,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:01:16,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:01:16,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:01:16,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:01:16,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:01:16,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:01:16" (1/1) ... [2022-11-25 18:01:16,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496c0f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:16, skipping insertion in model container [2022-11-25 18:01:16,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:01:16" (1/1) ... [2022-11-25 18:01:16,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:01:16,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:01:17,183 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:01:18,024 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:01:18,031 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:01:18,034 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:01:18,046 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:01:18,047 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:01:18,075 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:01:18,077 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:01:18,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:01:18,097 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:01:18,129 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:01:18,208 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:01:18,209 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:01:18,210 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:01:18,212 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:01:18,213 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:01:18,217 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:01:18,218 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:01:18,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:01:18,350 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:01:18,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18 WrapperNode [2022-11-25 18:01:18,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:01:18,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:01:18,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:01:18,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:01:18,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,427 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2022-11-25 18:01:18,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:01:18,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:01:18,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:01:18,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:01:18,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:01:18,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:01:18,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:01:18,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:01:18,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (1/1) ... [2022-11-25 18:01:18,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:01:18,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:01:18,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:01:18,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:01:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 18:01:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 18:01:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 18:01:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:01:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:01:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:01:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:01:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:01:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:01:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 18:01:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 18:01:18,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:01:18,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:01:18,985 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:01:18,997 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:01:18,997 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:01:18,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:01:18 BoogieIcfgContainer [2022-11-25 18:01:18,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:01:19,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:01:19,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:01:19,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:01:19,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:01:16" (1/3) ... [2022-11-25 18:01:19,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634bd250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:01:19, skipping insertion in model container [2022-11-25 18:01:19,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:01:18" (2/3) ... [2022-11-25 18:01:19,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634bd250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:01:19, skipping insertion in model container [2022-11-25 18:01:19,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:01:18" (3/3) ... [2022-11-25 18:01:19,016 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_21_bad.i [2022-11-25 18:01:19,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:01:19,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:01:19,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:01:19,124 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;@4b203e9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:01:19,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:01:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:01:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 18:01:19,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:19,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:19,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 18:01:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:19,151 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2022-11-25 18:01:19,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:01:19,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217538789] [2022-11-25 18:01:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:19,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:01:19,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:01:19,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:01:19,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:01:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:01:19,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:01:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:01:19,521 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 18:01:19,526 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:01:19,527 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 18:01:19,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 18:01:19,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:01:19,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:01:19,735 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:01:19,739 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:01:19,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:01:19 BoogieIcfgContainer [2022-11-25 18:01:19,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:01:19,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:01:19,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:01:19,772 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:01:19,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:01:18" (3/4) ... [2022-11-25 18:01:19,776 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:01:19,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:01:19,777 INFO L158 Benchmark]: Toolchain (without parser) took 3142.90ms. Allocated memory is still 88.1MB. Free memory was 62.0MB in the beginning and 34.2MB in the end (delta: 27.8MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2022-11-25 18:01:19,778 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 69.2MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:01:19,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1713.67ms. Allocated memory is still 88.1MB. Free memory was 61.8MB in the beginning and 45.8MB in the end (delta: 16.0MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2022-11-25 18:01:19,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.07ms. Allocated memory is still 88.1MB. Free memory was 45.8MB in the beginning and 42.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:01:19,780 INFO L158 Benchmark]: Boogie Preprocessor took 66.33ms. Allocated memory is still 88.1MB. Free memory was 42.5MB in the beginning and 40.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:01:19,780 INFO L158 Benchmark]: RCFGBuilder took 503.83ms. Allocated memory is still 88.1MB. Free memory was 40.3MB in the beginning and 52.1MB in the end (delta: -11.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-11-25 18:01:19,781 INFO L158 Benchmark]: TraceAbstraction took 766.13ms. Allocated memory is still 88.1MB. Free memory was 51.5MB in the beginning and 34.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 18:01:19,781 INFO L158 Benchmark]: Witness Printer took 4.92ms. Allocated memory is still 88.1MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:01:19,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 69.2MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1713.67ms. Allocated memory is still 88.1MB. Free memory was 61.8MB in the beginning and 45.8MB in the end (delta: 16.0MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.07ms. Allocated memory is still 88.1MB. Free memory was 45.8MB in the beginning and 42.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.33ms. Allocated memory is still 88.1MB. Free memory was 42.5MB in the beginning and 40.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.83ms. Allocated memory is still 88.1MB. Free memory was 40.3MB in the beginning and 52.1MB in the end (delta: -11.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 766.13ms. Allocated memory is still 88.1MB. Free memory was 51.5MB in the beginning and 34.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.92ms. Allocated memory is still 88.1MB. Free memory is still 34.2MB. 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: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. 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); [L1548] static int badStatic = 0; VAL [badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL printLine("Calling bad()...") VAL [badStatic=0, 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_21_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1575] badStatic = 1 [L1576] CALL badSink(data) [L1551] COND TRUE \read(badStatic) [L1554] data-- VAL [\old(data)=-2147483648, badStatic=1, data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1554]: 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: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 18:01:19,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7b7a66-0fbd-4b37-b9a4-09c6c51db6ce/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample