./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 156cc870dda331547ca89e59309b05cf08363cb4a8600f15a9d865791b5cc144 --- 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 [2022-12-14 14:34:25,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:34:25,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:34:25,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:34:25,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:34:25,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:34:25,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:34:25,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:34:25,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:34:25,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:34:25,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:34:25,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:34:25,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:34:25,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:34:25,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:34:25,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:34:25,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:34:25,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:34:25,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:34:25,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:34:25,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:34:25,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:34:25,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:34:25,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:34:25,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:34:25,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:34:25,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:34:25,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:34:25,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:34:25,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:34:25,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:34:25,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:34:25,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:34:25,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:34:25,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:34:25,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:34:25,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:34:25,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:34:25,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:34:25,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:34:25,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:34:25,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 14:34:25,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:34:25,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:34:25,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:34:25,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:34:25,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:34:25,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:34:25,839 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:34:25,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:34:25,840 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:34:25,840 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:34:25,840 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:34:25,840 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:34:25,840 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:34:25,841 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:34:25,841 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:34:25,841 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:34:25,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:34:25,841 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:34:25,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:34:25,842 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:34:25,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:34:25,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:34:25,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:34:25,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:34:25,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:34:25,843 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:34:25,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:34:25,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:34:25,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:34:25,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:34:25,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:34:25,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:34:25,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:34:25,845 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:34:25,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:34:25,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:34:25,846 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:34:25,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:34:25,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:34:25,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:34:25,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156cc870dda331547ca89e59309b05cf08363cb4a8600f15a9d865791b5cc144 [2022-12-14 14:34:26,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:34:26,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:34:26,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:34:26,064 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:34:26,065 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:34:26,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-12-14 14:34:28,769 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:34:29,040 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:34:29,040 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-12-14 14:34:29,057 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/data/5b9f5e1b3/825f691cdcc648a9b0b0b74070708129/FLAG6f18f4a5a [2022-12-14 14:34:29,068 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/data/5b9f5e1b3/825f691cdcc648a9b0b0b74070708129 [2022-12-14 14:34:29,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:34:29,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:34:29,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:34:29,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:34:29,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:34:29,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,077 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 14.12 02:34:29, skipping insertion in model container [2022-12-14 14:34:29,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:34:29,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:34:29,386 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:34:29,671 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:34:29,675 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:34:29,676 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:34:29,678 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:34:29,678 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:34:29,693 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:34:29,697 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:34:29,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:34:29,706 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:34:29,721 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:34:29,752 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:34:29,753 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:34:29,754 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:34:29,756 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:34:29,757 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:34:29,760 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:34:29,762 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:34:29,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:34:29,858 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:34:29,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29 WrapperNode [2022-12-14 14:34:29,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:34:29,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:34:29,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:34:29,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:34:29,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,896 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-14 14:34:29,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:34:29,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:34:29,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:34:29,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:34:29,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,912 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:34:29,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:34:29,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:34:29,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:34:29,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (1/1) ... [2022-12-14 14:34:29,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:34:29,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:34:29,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:34:29,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:34:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 14:34:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 14:34:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 14:34:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:34:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 14:34:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:34:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:34:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:34:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:34:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 14:34:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:34:30,090 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:34:30,091 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:34:30,187 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:34:30,221 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:34:30,222 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 14:34:30,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:34:30 BoogieIcfgContainer [2022-12-14 14:34:30,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:34:30,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:34:30,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:34:30,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:34:30,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:34:29" (1/3) ... [2022-12-14 14:34:30,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b490021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:34:30, skipping insertion in model container [2022-12-14 14:34:30,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:29" (2/3) ... [2022-12-14 14:34:30,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b490021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:34:30, skipping insertion in model container [2022-12-14 14:34:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:34:30" (3/3) ... [2022-12-14 14:34:30,233 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-12-14 14:34:30,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:34:30,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:34:30,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:34:30,296 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=FINITE_AUTOMATA, 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;@76115db6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:34:30,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:34:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-12-14 14:34:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:34:30,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:30,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:30,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:34:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-12-14 14:34:30,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:34:30,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161104115] [2022-12-14 14:34:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:30,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:34:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:30,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:34:30,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161104115] [2022-12-14 14:34:30,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161104115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:30,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:30,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:34:30,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400818304] [2022-12-14 14:34:30,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:30,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:34:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:34:30,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:34:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:30,532 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-14 14:34:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:30,561 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 14:34:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:34:30,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 8 [2022-12-14 14:34:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:30,568 INFO L225 Difference]: With dead ends: 29 [2022-12-14 14:34:30,568 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 14:34:30,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:30,572 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:30,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:34:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 14:34:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 14:34:30,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 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) [2022-12-14 14:34:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 14:34:30,595 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-12-14 14:34:30,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:30,596 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 14:34:30,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-14 14:34:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 14:34:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 14:34:30,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:30,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:30,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:34:30,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:34:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-12-14 14:34:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:34:30,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132918795] [2022-12-14 14:34:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:34:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:34:30,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:34:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:34:30,653 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:34:30,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:34:30,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:34:30,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:34:30,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:34:30,658 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 14:34:30,661 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:34:30,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:34:30 BoogieIcfgContainer [2022-12-14 14:34:30,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:34:30,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:34:30,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:34:30,677 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:34:30,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:34:30" (3/4) ... [2022-12-14 14:34:30,679 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:34:30,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:34:30,680 INFO L158 Benchmark]: Toolchain (without parser) took 1608.48ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 79.7MB in the beginning and 96.5MB in the end (delta: -16.8MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2022-12-14 14:34:30,680 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 82.6MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:34:30,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 786.28ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 79.7MB in the beginning and 92.3MB in the end (delta: -12.6MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2022-12-14 14:34:30,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.81ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 89.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:34:30,681 INFO L158 Benchmark]: Boogie Preprocessor took 18.55ms. Allocated memory is still 151.0MB. Free memory was 89.3MB in the beginning and 88.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:34:30,682 INFO L158 Benchmark]: RCFGBuilder took 308.67ms. Allocated memory is still 151.0MB. Free memory was 88.1MB in the beginning and 73.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:34:30,682 INFO L158 Benchmark]: TraceAbstraction took 449.49ms. Allocated memory is still 151.0MB. Free memory was 72.6MB in the beginning and 96.5MB in the end (delta: -23.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:34:30,682 INFO L158 Benchmark]: Witness Printer took 2.94ms. Allocated memory is still 151.0MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:34:30,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 82.6MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 786.28ms. Allocated memory was 117.4MB in the beginning and 151.0MB in the end (delta: 33.6MB). Free memory was 79.7MB in the beginning and 92.3MB in the end (delta: -12.6MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.81ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 89.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.55ms. Allocated memory is still 151.0MB. Free memory was 89.3MB in the beginning and 88.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 308.67ms. Allocated memory is still 151.0MB. Free memory was 88.1MB in the beginning and 73.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 449.49ms. Allocated memory is still 151.0MB. Free memory was 72.6MB in the beginning and 96.5MB in the end (delta: -23.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.94ms. Allocated memory is still 151.0MB. Free memory is still 96.5MB. 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); [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)=1073741825, argc=1073741825, argv={1073741828:1073741827}, argv={1073741828:1073741827}, 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_postdec_14_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 globalFive==5 [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 globalFive==5 [L1569] data-- VAL [data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 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, 18 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, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 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 [2022-12-14 14:34:30,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 156cc870dda331547ca89e59309b05cf08363cb4a8600f15a9d865791b5cc144 --- 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 [2022-12-14 14:34:32,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:34:32,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:34:32,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:34:32,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:34:32,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:34:32,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:34:32,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:34:32,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:34:32,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:34:32,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:34:32,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:34:32,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:34:32,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:34:32,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:34:32,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:34:32,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:34:32,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:34:32,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:34:32,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:34:32,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:34:32,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:34:32,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:34:32,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:34:32,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:34:32,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:34:32,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:34:32,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:34:32,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:34:32,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:34:32,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:34:32,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:34:32,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:34:32,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:34:32,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:34:32,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:34:32,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:34:32,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:34:32,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:34:32,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:34:32,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:34:32,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 14:34:32,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:34:32,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:34:32,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:34:32,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:34:32,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:34:32,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:34:32,451 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:34:32,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:34:32,452 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:34:32,452 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:34:32,452 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:34:32,452 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:34:32,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:34:32,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:34:32,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:34:32,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:34:32,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:34:32,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:34:32,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:34:32,454 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:34:32,454 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:34:32,454 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:34:32,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:34:32,455 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:34:32,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:34:32,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:34:32,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:34:32,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:34:32,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:34:32,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:34:32,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:34:32,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:34:32,456 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:34:32,456 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:34:32,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:34:32,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:34:32,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:34:32,456 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156cc870dda331547ca89e59309b05cf08363cb4a8600f15a9d865791b5cc144 [2022-12-14 14:34:32,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:34:32,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:34:32,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:34:32,711 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:34:32,711 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:34:32,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-12-14 14:34:35,310 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:34:35,534 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:34:35,535 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-12-14 14:34:35,548 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/data/5c784554b/5f4eccf90b0e418f8a20115fd7267c57/FLAG7219a2dd4 [2022-12-14 14:34:35,559 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/data/5c784554b/5f4eccf90b0e418f8a20115fd7267c57 [2022-12-14 14:34:35,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:34:35,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:34:35,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:34:35,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:34:35,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:34:35,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:34:35" (1/1) ... [2022-12-14 14:34:35,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8079eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:35, skipping insertion in model container [2022-12-14 14:34:35,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:34:35" (1/1) ... [2022-12-14 14:34:35,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:34:35,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:34:35,838 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:34:36,177 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:34:36,181 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:34:36,182 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:34:36,184 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:34:36,184 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:34:36,198 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:34:36,202 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:34:36,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:34:36,214 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:34:36,228 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:34:36,261 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:34:36,262 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:34:36,263 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:34:36,264 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:34:36,265 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:34:36,268 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:34:36,269 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:34:36,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:34:36,342 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:34:36,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36 WrapperNode [2022-12-14 14:34:36,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:34:36,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:34:36,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:34:36,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:34:36,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,385 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 14:34:36,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:34:36,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:34:36,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:34:36,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:34:36,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:34:36,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:34:36,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:34:36,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:34:36,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (1/1) ... [2022-12-14 14:34:36,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:34:36,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:34:36,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:34:36,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:34:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 14:34:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 14:34:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 14:34:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:34:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 14:34:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:34:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:34:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:34:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:34:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 14:34:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 14:34:36,608 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:34:36,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:34:36,732 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:34:36,738 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:34:36,738 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 14:34:36,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:34:36 BoogieIcfgContainer [2022-12-14 14:34:36,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:34:36,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:34:36,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:34:36,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:34:36,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:34:35" (1/3) ... [2022-12-14 14:34:36,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd02e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:34:36, skipping insertion in model container [2022-12-14 14:34:36,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:34:36" (2/3) ... [2022-12-14 14:34:36,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd02e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:34:36, skipping insertion in model container [2022-12-14 14:34:36,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:34:36" (3/3) ... [2022-12-14 14:34:36,749 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-12-14 14:34:36,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:34:36,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:34:36,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:34:36,815 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=FINITE_AUTOMATA, 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;@16fcd058, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:34:36,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:34:36,818 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) [2022-12-14 14:34:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:34:36,824 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:36,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:36,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:34:36,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:36,829 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-14 14:34:36,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:36,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935392288] [2022-12-14 14:34:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:36,840 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 [2022-12-14 14:34:36,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:36,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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) [2022-12-14 14:34:36,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:34:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:34:36,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:34:36,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:34:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:34:36,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:34:36,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:34:36,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935392288] [2022-12-14 14:34:36,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935392288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:36,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:34:37,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:34:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297929724] [2022-12-14 14:34:37,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:34:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:34:37,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:34:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:34:37,040 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) [2022-12-14 14:34:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:34:37,075 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-12-14 14:34:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:34:37,077 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 [2022-12-14 14:34:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:34:37,082 INFO L225 Difference]: With dead ends: 49 [2022-12-14 14:34:37,082 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 14:34:37,084 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 [2022-12-14 14:34:37,087 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:34:37,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 55 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:34:37,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 14:34:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 14:34:37,110 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) [2022-12-14 14:34:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 14:34:37,111 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-14 14:34:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:34:37,112 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 14:34:37,113 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) [2022-12-14 14:34:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 14:34:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:34:37,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:34:37,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:34:37,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:34:37,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:34:37,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:34:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:34:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-14 14:34:37,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:34:37,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322708849] [2022-12-14 14:34:37,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:34:37,316 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 [2022-12-14 14:34:37,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:34:37,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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) [2022-12-14 14:34:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:34:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:34:37,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:34:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:34:37,444 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 14:34:37,444 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:34:37,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:34:37,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:34:37,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 14:34:37,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:34:37,650 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 14:34:37,653 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:34:37,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:34:37 BoogieIcfgContainer [2022-12-14 14:34:37,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:34:37,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:34:37,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:34:37,670 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:34:37,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:34:36" (3/4) ... [2022-12-14 14:34:37,672 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:34:37,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:34:37,673 INFO L158 Benchmark]: Toolchain (without parser) took 2111.20ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 58.5MB in the beginning and 54.4MB in the end (delta: 4.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2022-12-14 14:34:37,673 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory is still 30.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:34:37,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 780.03ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 36.1MB in the end (delta: 22.2MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2022-12-14 14:34:37,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.26ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 36.1MB in the beginning and 74.0MB in the end (delta: -37.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-12-14 14:34:37,674 INFO L158 Benchmark]: Boogie Preprocessor took 24.66ms. Allocated memory is still 100.7MB. Free memory was 74.0MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:34:37,675 INFO L158 Benchmark]: RCFGBuilder took 329.37ms. Allocated memory is still 100.7MB. Free memory was 71.9MB in the beginning and 57.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 14:34:37,675 INFO L158 Benchmark]: TraceAbstraction took 925.94ms. Allocated memory is still 100.7MB. Free memory was 57.3MB in the beginning and 55.1MB in the end (delta: 2.2MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2022-12-14 14:34:37,675 INFO L158 Benchmark]: Witness Printer took 2.97ms. Allocated memory is still 100.7MB. Free memory was 55.1MB in the beginning and 54.4MB in the end (delta: 667.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:34:37,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory is still 30.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 780.03ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 36.1MB in the end (delta: 22.2MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.26ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 36.1MB in the beginning and 74.0MB in the end (delta: -37.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.66ms. Allocated memory is still 100.7MB. Free memory was 74.0MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.37ms. Allocated memory is still 100.7MB. Free memory was 71.9MB in the beginning and 57.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 925.94ms. Allocated memory is still 100.7MB. Free memory was 57.3MB in the beginning and 55.1MB in the end (delta: 2.2MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. * Witness Printer took 2.97ms. Allocated memory is still 100.7MB. Free memory was 55.1MB in the beginning and 54.4MB in the end (delta: 667.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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_postdec_14_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 globalFive==5 [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 globalFive==5 [L1569] data-- VAL [data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 32 mSDtfsCounter, 4 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, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 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 [2022-12-14 14:34:37,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5285ee-8799-4cfa-a218-01b49384ad0a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample