./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur --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 8d9d1a0fafec05324327623425bba944144beaa272ae23d2023290f81e81057c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:36:06,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:36:06,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:36:06,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:36:06,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:36:06,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:36:06,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:36:06,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:36:06,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:36:06,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:36:06,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:36:06,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:36:06,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:36:06,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:36:06,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:36:06,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:36:06,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:36:06,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:36:06,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:36:06,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:36:06,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:36:06,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:36:06,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:36:06,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:36:06,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:36:06,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:36:06,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:36:06,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:36:06,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:36:06,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:36:06,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:36:06,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:36:06,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:36:06,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:36:06,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:36:06,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:36:06,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:36:06,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:36:06,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:36:06,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:36:06,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:36:06,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 00:36:06,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:36:06,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:36:06,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:36:06,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:36:06,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:36:06,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:36:06,834 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:36:06,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:36:06,834 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:36:06,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:36:06,835 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:36:06,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:36:06,835 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:36:06,836 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:36:06,836 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:36:06,836 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:36:06,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:36:06,837 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:36:06,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:36:06,838 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:36:06,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:36:06,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:36:06,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:36:06,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:36:06,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:36:06,839 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:36:06,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:36:06,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:36:06,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:36:06,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:36:06,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:36:06,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:36:06,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:36:06,841 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:36:06,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:36:06,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:36:06,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:36:06,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:36:06,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:36:06,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:36:06,843 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_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d9d1a0fafec05324327623425bba944144beaa272ae23d2023290f81e81057c [2022-11-26 00:36:07,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:36:07,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:36:07,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:36:07,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:36:07,168 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:36:07,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-11-26 00:36:10,736 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:36:11,234 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:36:11,235 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-11-26 00:36:11,261 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/data/fd6f413e2/c03c725208f54df697ae99f92d6bffc1/FLAGf2463d6b0 [2022-11-26 00:36:11,284 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/data/fd6f413e2/c03c725208f54df697ae99f92d6bffc1 [2022-11-26 00:36:11,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:36:11,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:36:11,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:36:11,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:36:11,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:36:11,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:36:11" (1/1) ... [2022-11-26 00:36:11,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bda1073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:11, skipping insertion in model container [2022-11-26 00:36:11,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:36:11" (1/1) ... [2022-11-26 00:36:11,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:36:11,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:36:11,929 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:36:12,637 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:36:12,644 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:36:12,647 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:36:12,650 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:36:12,651 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:36:12,698 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:36:12,704 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:36:12,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:36:12,726 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:36:12,750 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:36:12,802 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:36:12,804 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:36:12,805 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:36:12,808 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:36:12,851 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:36:12,856 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:36:12,858 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:36:12,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:36:13,035 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:36:13,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13 WrapperNode [2022-11-26 00:36:13,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:36:13,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:36:13,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:36:13,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:36:13,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,116 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-11-26 00:36:13,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:36:13,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:36:13,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:36:13,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:36:13,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:36:13,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:36:13,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:36:13,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:36:13,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (1/1) ... [2022-11-26 00:36:13,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:36:13,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:36:13,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:36:13,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:36:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:36:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:36:13,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:36:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:36:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:36:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:36:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:36:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:36:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:36:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:36:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:36:13,586 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:36:13,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:36:13,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:36:13,798 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:36:13,801 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:36:13,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:13 BoogieIcfgContainer [2022-11-26 00:36:13,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:36:13,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:36:13,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:36:13,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:36:13,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:36:11" (1/3) ... [2022-11-26 00:36:13,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457a1abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:36:13, skipping insertion in model container [2022-11-26 00:36:13,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:13" (2/3) ... [2022-11-26 00:36:13,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457a1abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:36:13, skipping insertion in model container [2022-11-26 00:36:13,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:13" (3/3) ... [2022-11-26 00:36:13,820 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-11-26 00:36:13,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:36:13,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:36:13,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:36:13,910 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;@3505c420, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:36:13,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:36:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:36:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:36:13,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:13,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:13,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:36:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash 805598275, now seen corresponding path program 1 times [2022-11-26 00:36:13,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:13,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552511657] [2022-11-26 00:36:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:13,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:14,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:14,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552511657] [2022-11-26 00:36:14,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552511657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:14,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:14,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:36:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326169512] [2022-11-26 00:36:14,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:14,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:36:14,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:14,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:36:14,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:36:14,341 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 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 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-26 00:36:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:14,412 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-26 00:36:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:36:14,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 9 [2022-11-26 00:36:14,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:14,425 INFO L225 Difference]: With dead ends: 31 [2022-11-26 00:36:14,425 INFO L226 Difference]: Without dead ends: 15 [2022-11-26 00:36:14,430 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 [2022-11-26 00:36:14,439 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 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 [2022-11-26 00:36:14,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:36:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-26 00:36:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-26 00:36:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 12 states have internal predecessors, (12), 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) [2022-11-26 00:36:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-26 00:36:14,486 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-11-26 00:36:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:14,488 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-26 00:36:14,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-26 00:36:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-26 00:36:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:36:14,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:14,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:14,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:36:14,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:36:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash 789107816, now seen corresponding path program 1 times [2022-11-26 00:36:14,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:14,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908057520] [2022-11-26 00:36:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:14,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:36:14,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:36:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:36:14,669 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:36:14,669 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:36:14,671 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:36:14,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:36:14,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:36:14,678 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 00:36:14,683 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:36:14,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:36:14 BoogieIcfgContainer [2022-11-26 00:36:14,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:36:14,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:36:14,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:36:14,719 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:36:14,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:13" (3/4) ... [2022-11-26 00:36:14,724 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:36:14,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:36:14,725 INFO L158 Benchmark]: Toolchain (without parser) took 3433.45ms. Allocated memory was 123.7MB in the beginning and 172.0MB in the end (delta: 48.2MB). Free memory was 78.2MB in the beginning and 115.1MB in the end (delta: -36.9MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-11-26 00:36:14,726 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:36:14,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1743.28ms. Allocated memory was 123.7MB in the beginning and 172.0MB in the end (delta: 48.2MB). Free memory was 78.2MB in the beginning and 110.6MB in the end (delta: -32.3MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2022-11-26 00:36:14,728 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.41ms. Allocated memory is still 172.0MB. Free memory was 110.6MB in the beginning and 108.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:36:14,728 INFO L158 Benchmark]: Boogie Preprocessor took 33.57ms. Allocated memory is still 172.0MB. Free memory was 108.1MB in the beginning and 106.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:36:14,729 INFO L158 Benchmark]: RCFGBuilder took 654.42ms. Allocated memory is still 172.0MB. Free memory was 106.5MB in the beginning and 91.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:36:14,730 INFO L158 Benchmark]: TraceAbstraction took 909.01ms. Allocated memory is still 172.0MB. Free memory was 91.3MB in the beginning and 115.9MB in the end (delta: -24.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:36:14,731 INFO L158 Benchmark]: Witness Printer took 5.42ms. Allocated memory is still 172.0MB. Free memory was 115.9MB in the beginning and 115.1MB in the end (delta: 757.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:36:14,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1743.28ms. Allocated memory was 123.7MB in the beginning and 172.0MB in the end (delta: 48.2MB). Free memory was 78.2MB in the beginning and 110.6MB in the end (delta: -32.3MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.41ms. Allocated memory is still 172.0MB. Free memory was 110.6MB in the beginning and 108.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.57ms. Allocated memory is still 172.0MB. Free memory was 108.1MB in the beginning and 106.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.42ms. Allocated memory is still 172.0MB. Free memory was 106.5MB in the beginning and 91.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 909.01ms. Allocated memory is still 172.0MB. Free memory was 91.3MB in the beginning and 115.9MB in the end (delta: -24.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.42ms. Allocated memory is still 172.0MB. Free memory was 115.9MB in the beginning and 115.1MB in the end (delta: 757.1kB). 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: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int staticFive = 5; [L1579] 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}, staticFive=5] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_multiply_07_bad() [L1551] int data; [L1552] 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, staticFive=5] [L1553] COND TRUE staticFive==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1567] COND TRUE staticFive==5 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1569] COND TRUE data < 0 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1571] data * 2 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] - UnprovableResult [Line: 1571]: 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 16 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, 16 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=19occurred 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, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 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 [2022-11-26 00:36:14,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur --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 8d9d1a0fafec05324327623425bba944144beaa272ae23d2023290f81e81057c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:36:17,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:36:17,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:36:17,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:36:17,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:36:17,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:36:17,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:36:17,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:36:17,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:36:17,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:36:17,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:36:17,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:36:17,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:36:17,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:36:17,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:36:17,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:36:17,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:36:17,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:36:17,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:36:17,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:36:17,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:36:17,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:36:17,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:36:17,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:36:17,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:36:17,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:36:17,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:36:17,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:36:17,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:36:17,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:36:17,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:36:17,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:36:17,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:36:17,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:36:17,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:36:17,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:36:17,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:36:17,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:36:17,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:36:17,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:36:17,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:36:17,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-26 00:36:18,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:36:18,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:36:18,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:36:18,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:36:18,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:36:18,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:36:18,011 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:36:18,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:36:18,011 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:36:18,011 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:36:18,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:36:18,013 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:36:18,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:36:18,014 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:36:18,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:36:18,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:36:18,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:36:18,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:36:18,016 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:36:18,016 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:36:18,016 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:36:18,017 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:36:18,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:36:18,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:36:18,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:36:18,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:36:18,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:36:18,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:36:18,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:36:18,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:36:18,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:36:18,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:36:18,020 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:36:18,021 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:36:18,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:36:18,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:36:18,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:36:18,022 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_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d9d1a0fafec05324327623425bba944144beaa272ae23d2023290f81e81057c [2022-11-26 00:36:18,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:36:18,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:36:18,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:36:18,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:36:18,570 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:36:18,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-11-26 00:36:22,439 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:36:22,993 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:36:22,994 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-11-26 00:36:23,037 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/data/3d8ab8036/586a5f9ef82a4929a19505cfcbd5cc7b/FLAG668c8a880 [2022-11-26 00:36:23,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/data/3d8ab8036/586a5f9ef82a4929a19505cfcbd5cc7b [2022-11-26 00:36:23,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:36:23,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:36:23,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:36:23,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:36:23,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:36:23,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:36:23" (1/1) ... [2022-11-26 00:36:23,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ec85c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:23, skipping insertion in model container [2022-11-26 00:36:23,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:36:23" (1/1) ... [2022-11-26 00:36:23,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:36:23,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:36:23,787 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:36:24,542 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:36:24,571 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:36:24,573 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:36:24,576 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:36:24,577 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:36:24,616 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:36:24,634 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:36:24,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:36:24,684 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:36:24,707 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:36:24,783 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:36:24,785 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:36:24,787 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:36:24,790 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:36:24,791 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:36:24,797 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:36:24,799 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:36:24,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:36:24,947 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:36:24,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24 WrapperNode [2022-11-26 00:36:24,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:36:24,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:36:24,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:36:24,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:36:24,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,028 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-26 00:36:25,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:36:25,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:36:25,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:36:25,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:36:25,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:36:25,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:36:25,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:36:25,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:36:25,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (1/1) ... [2022-11-26 00:36:25,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:36:25,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:36:25,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:36:25,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:36:25,165 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:36:25,165 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:36:25,165 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:36:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:36:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:36:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:36:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:36:25,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:36:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:36:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:36:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-26 00:36:25,444 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:36:25,446 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:36:25,661 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:36:25,668 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:36:25,668 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:36:25,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:25 BoogieIcfgContainer [2022-11-26 00:36:25,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:36:25,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:36:25,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:36:25,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:36:25,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:36:23" (1/3) ... [2022-11-26 00:36:25,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c3c285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:36:25, skipping insertion in model container [2022-11-26 00:36:25,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:24" (2/3) ... [2022-11-26 00:36:25,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c3c285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:36:25, skipping insertion in model container [2022-11-26 00:36:25,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:25" (3/3) ... [2022-11-26 00:36:25,682 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_07_bad.i [2022-11-26 00:36:25,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:36:25,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:36:25,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:36:25,766 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;@60b8d1b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:36:25,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:36:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:36:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:36:25,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:25,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:25,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:36:25,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1426013167, now seen corresponding path program 1 times [2022-11-26 00:36:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:36:25,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918757355] [2022-11-26 00:36:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:25,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:36:25,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:36:25,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:36:25,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:36:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:26,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:36:26,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:36:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:26,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:36:26,094 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:36:26,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918757355] [2022-11-26 00:36:26,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918757355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:26,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:26,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:36:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476103525] [2022-11-26 00:36:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:26,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:36:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:36:26,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:36:26,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:36:26,141 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-26 00:36:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:26,190 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2022-11-26 00:36:26,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:36:26,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 12 [2022-11-26 00:36:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:26,202 INFO L225 Difference]: With dead ends: 42 [2022-11-26 00:36:26,204 INFO L226 Difference]: Without dead ends: 18 [2022-11-26 00:36:26,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:36:26,216 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:26,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:36:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-26 00:36:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-26 00:36:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-11-26 00:36:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-11-26 00:36:26,272 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-11-26 00:36:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:26,274 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-11-26 00:36:26,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-26 00:36:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-11-26 00:36:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:36:26,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:26,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:26,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/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)] Ended with exit code 0 [2022-11-26 00:36:26,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:36:26,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:36:26,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:26,498 INFO L85 PathProgramCache]: Analyzing trace with hash -600807242, now seen corresponding path program 1 times [2022-11-26 00:36:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:36:26,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758991862] [2022-11-26 00:36:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:26,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:36:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:36:26,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:36:26,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:36:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:36:26,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:36:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:36:26,770 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 00:36:26,770 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:36:26,773 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:36:26,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:36:26,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:36:26,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:36:26,992 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 00:36:26,998 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:36:27,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:36:27 BoogieIcfgContainer [2022-11-26 00:36:27,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:36:27,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:36:27,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:36:27,069 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:36:27,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:25" (3/4) ... [2022-11-26 00:36:27,074 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:36:27,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:36:27,077 INFO L158 Benchmark]: Toolchain (without parser) took 4016.45ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 67.0MB in the beginning and 68.4MB in the end (delta: -1.4MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-26 00:36:27,084 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 71.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:36:27,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1888.25ms. Allocated memory is still 92.3MB. Free memory was 66.8MB in the beginning and 50.2MB in the end (delta: 16.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2022-11-26 00:36:27,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.40ms. Allocated memory is still 92.3MB. Free memory was 50.2MB in the beginning and 47.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:36:27,087 INFO L158 Benchmark]: Boogie Preprocessor took 42.57ms. Allocated memory is still 92.3MB. Free memory was 47.2MB in the beginning and 45.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:36:27,087 INFO L158 Benchmark]: RCFGBuilder took 598.40ms. Allocated memory is still 92.3MB. Free memory was 45.1MB in the beginning and 57.4MB in the end (delta: -12.3MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-26 00:36:27,088 INFO L158 Benchmark]: TraceAbstraction took 1393.18ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 69.0MB in the end (delta: -12.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-11-26 00:36:27,092 INFO L158 Benchmark]: Witness Printer took 6.89ms. Allocated memory is still 111.1MB. Free memory was 69.0MB in the beginning and 68.4MB in the end (delta: 588.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:36:27,096 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 71.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1888.25ms. Allocated memory is still 92.3MB. Free memory was 66.8MB in the beginning and 50.2MB in the end (delta: 16.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.40ms. Allocated memory is still 92.3MB. Free memory was 50.2MB in the beginning and 47.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.57ms. Allocated memory is still 92.3MB. Free memory was 47.2MB in the beginning and 45.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 598.40ms. Allocated memory is still 92.3MB. Free memory was 45.1MB in the beginning and 57.4MB in the end (delta: -12.3MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1393.18ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 69.0MB in the end (delta: -12.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Witness Printer took 6.89ms. Allocated memory is still 111.1MB. Free memory was 69.0MB in the beginning and 68.4MB in the end (delta: 588.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int staticFive = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFive=5] [L1579] 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}, staticFive=5] [L1414] COND TRUE line != ((void *)0) [L1579] 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, staticFive=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_multiply_07_bad() [L1551] int data; [L1552] 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, staticFive=5] [L1553] COND TRUE staticFive==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] 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, staticFive=5] [L1567] COND TRUE staticFive==5 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, staticFive=5] [L1569] COND TRUE data < 0 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, staticFive=5] [L1571] 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, staticFive=5] - UnprovableResult [Line: 1571]: 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, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 27 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 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 [2022-11-26 00:36:27,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2530eaab-ab32-4490-a340-ffc06b7ed56c/bin/utaipan-ByfvJB40ur/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