./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c4cb47198f264b062dc36e4b377ad0aaadbdda18ccf1266f47e11aa66017b256 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:01:59,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:01:59,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:01:59,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:01:59,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:01:59,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:01:59,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:01:59,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:01:59,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:01:59,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:01:59,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:01:59,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:01:59,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:01:59,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:01:59,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:01:59,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:01:59,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:01:59,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:01:59,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:01:59,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:01:59,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:01:59,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:01:59,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:01:59,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:01:59,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:01:59,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:01:59,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:01:59,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:01:59,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:01:59,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:01:59,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:01:59,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:01:59,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:01:59,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:01:59,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:01:59,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:01:59,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:01:59,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:01:59,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:01:59,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:01:59,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:01:59,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 14:01:59,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:01:59,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:01:59,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:01:59,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:01:59,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:01:59,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:01:59,644 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:01:59,644 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:01:59,644 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:01:59,644 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:01:59,644 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:01:59,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:01:59,644 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:01:59,645 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:01:59,645 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:01:59,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:01:59,645 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:01:59,645 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:01:59,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:01:59,646 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:01:59,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:01:59,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:01:59,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:01:59,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:01:59,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:01:59,647 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:01:59,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:01:59,647 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:01:59,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:01:59,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:01:59,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:01:59,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:01:59,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:01:59,648 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:01:59,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:01:59,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:01:59,649 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:01:59,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:01:59,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:01:59,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:01:59,649 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_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4cb47198f264b062dc36e4b377ad0aaadbdda18ccf1266f47e11aa66017b256 [2022-12-14 14:01:59,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:01:59,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:01:59,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:01:59,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:01:59,852 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:01:59,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i [2022-12-14 14:02:02,460 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:02:02,713 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:02:02,714 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i [2022-12-14 14:02:02,740 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/data/09aafbeb8/4dc1f505b1154ed3908751e578d7e568/FLAG3c8616633 [2022-12-14 14:02:03,014 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/data/09aafbeb8/4dc1f505b1154ed3908751e578d7e568 [2022-12-14 14:02:03,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:02:03,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:02:03,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:02:03,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:02:03,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:02:03,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1f356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03, skipping insertion in model container [2022-12-14 14:02:03,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:02:03,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:02:03,279 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:02:03,573 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:02:03,578 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:02:03,580 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:02:03,583 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:02:03,583 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:02:03,609 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:02:03,615 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:02:03,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:02:03,627 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:02:03,646 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:02:03,693 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:02:03,695 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:02:03,696 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:02:03,698 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:02:03,698 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:02:03,702 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:02:03,704 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:02:03,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:02:03,808 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:02:03,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03 WrapperNode [2022-12-14 14:02:03,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:02:03,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:02:03,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:02:03,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:02:03,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,857 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-12-14 14:02:03,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:02:03,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:02:03,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:02:03,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:02:03,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:02:03,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:02:03,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:02:03,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:02:03,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (1/1) ... [2022-12-14 14:02:03,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:02:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:02:03,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:02:03,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:02:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 14:02:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 14:02:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 14:02:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:02:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 14:02:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:02:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:02:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:02:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:02:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 14:02:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:02:04,046 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:02:04,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:02:04,151 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:02:04,178 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:02:04,178 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 14:02:04,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:04 BoogieIcfgContainer [2022-12-14 14:02:04,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:02:04,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:02:04,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:02:04,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:02:04,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:02:03" (1/3) ... [2022-12-14 14:02:04,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a622bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:02:04, skipping insertion in model container [2022-12-14 14:02:04,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:03" (2/3) ... [2022-12-14 14:02:04,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a622bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:02:04, skipping insertion in model container [2022-12-14 14:02:04,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:04" (3/3) ... [2022-12-14 14:02:04,190 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i [2022-12-14 14:02:04,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:02:04,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:02:04,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:02:04,259 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;@2134388, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:02:04,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:02:04,263 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) [2022-12-14 14:02:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:02:04,270 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:02:04,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:02:04,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:02:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:02:04,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1824013088, now seen corresponding path program 1 times [2022-12-14 14:02:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:02:04,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040684484] [2022-12-14 14:02:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:02:04,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:02:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:02:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:02:04,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:02:04,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040684484] [2022-12-14 14:02:04,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040684484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:02:04,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:02:04,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:02:04,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921861745] [2022-12-14 14:02:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:02:04,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:02:04,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:02:04,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:02:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:02:04,481 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-12-14 14:02:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:02:04,505 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-12-14 14:02:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:02:04,506 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-12-14 14:02:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:02:04,511 INFO L225 Difference]: With dead ends: 31 [2022-12-14 14:02:04,511 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 14:02:04,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:02:04,516 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:02:04,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:02:04,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 14:02:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 14:02:04,540 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) [2022-12-14 14:02:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-12-14 14:02:04,541 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-12-14 14:02:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:02:04,542 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-12-14 14:02:04,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-12-14 14:02:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-12-14 14:02:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:02:04,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:02:04,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:02:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:02:04,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:02:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:02:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2005203378, now seen corresponding path program 1 times [2022-12-14 14:02:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:02:04,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750599394] [2022-12-14 14:02:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:02:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:02:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:02:04,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:02:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:02:04,598 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:02:04,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:02:04,600 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:02:04,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:02:04,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:02:04,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 14:02:04,606 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:02:04,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:02:04 BoogieIcfgContainer [2022-12-14 14:02:04,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:02:04,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:02:04,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:02:04,623 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:02:04,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:04" (3/4) ... [2022-12-14 14:02:04,626 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:02:04,626 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:02:04,626 INFO L158 Benchmark]: Toolchain (without parser) took 1607.87ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 91.5MB in the end (delta: 8.4MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-12-14 14:02:04,626 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:02:04,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 789.33ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 83.9MB in the end (delta: 15.9MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-12-14 14:02:04,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.09ms. Allocated memory is still 155.2MB. Free memory was 83.9MB in the beginning and 80.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:02:04,628 INFO L158 Benchmark]: Boogie Preprocessor took 22.46ms. Allocated memory is still 155.2MB. Free memory was 80.9MB in the beginning and 79.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:02:04,628 INFO L158 Benchmark]: RCFGBuilder took 299.59ms. Allocated memory is still 155.2MB. Free memory was 79.4MB in the beginning and 121.8MB in the end (delta: -42.4MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2022-12-14 14:02:04,628 INFO L158 Benchmark]: TraceAbstraction took 438.61ms. Allocated memory is still 155.2MB. Free memory was 120.8MB in the beginning and 92.6MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 14:02:04,629 INFO L158 Benchmark]: Witness Printer took 3.26ms. Allocated memory is still 155.2MB. Free memory was 92.6MB in the beginning and 91.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:02:04,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 789.33ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 83.9MB in the end (delta: 15.9MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.09ms. Allocated memory is still 155.2MB. Free memory was 83.9MB in the beginning and 80.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.46ms. Allocated memory is still 155.2MB. Free memory was 80.9MB in the beginning and 79.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 299.59ms. Allocated memory is still 155.2MB. Free memory was 79.4MB in the beginning and 121.8MB in the end (delta: -42.4MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * TraceAbstraction took 438.61ms. Allocated memory is still 155.2MB. Free memory was 120.8MB in the beginning and 92.6MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 3.26ms. Allocated memory is still 155.2MB. Free memory was 92.6MB in the beginning and 91.5MB in the end (delta: 1.1MB). 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 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [\old(argc)=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] [L1581] CALL CWE191_Integer_Underflow__int_fgets_multiply_16_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE 1 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] [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] [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] - 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 18 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 14:02:04,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c4cb47198f264b062dc36e4b377ad0aaadbdda18ccf1266f47e11aa66017b256 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:02:06,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:02:06,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:02:06,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:02:06,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:02:06,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:02:06,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:02:06,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:02:06,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:02:06,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:02:06,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:02:06,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:02:06,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:02:06,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:02:06,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:02:06,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:02:06,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:02:06,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:02:06,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:02:06,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:02:06,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:02:06,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:02:06,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:02:06,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:02:06,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:02:06,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:02:06,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:02:06,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:02:06,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:02:06,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:02:06,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:02:06,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:02:06,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:02:06,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:02:06,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:02:06,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:02:06,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:02:06,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:02:06,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:02:06,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:02:06,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:02:06,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 14:02:06,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:02:06,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:02:06,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:02:06,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:02:06,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:02:06,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:02:06,492 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:02:06,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:02:06,492 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:02:06,492 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:02:06,492 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:02:06,492 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:02:06,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:02:06,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:02:06,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:02:06,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:02:06,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:02:06,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:02:06,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:02:06,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:02:06,494 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:02:06,494 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:02:06,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:02:06,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:02:06,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:02:06,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:02:06,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:02:06,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:02:06,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:02:06,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:02:06,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:02:06,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:02:06,501 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:02:06,502 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:02:06,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:02:06,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:02:06,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:02:06,502 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_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4cb47198f264b062dc36e4b377ad0aaadbdda18ccf1266f47e11aa66017b256 [2022-12-14 14:02:06,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:02:06,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:02:06,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:02:06,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:02:06,736 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:02:06,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i [2022-12-14 14:02:09,341 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:02:09,602 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:02:09,603 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i [2022-12-14 14:02:09,619 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/data/15cb51af5/7ddde5b2115d4e25b69a367d01e62161/FLAG9e2b000e5 [2022-12-14 14:02:09,898 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/data/15cb51af5/7ddde5b2115d4e25b69a367d01e62161 [2022-12-14 14:02:09,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:02:09,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:02:09,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:02:09,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:02:09,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:02:09,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:02:09" (1/1) ... [2022-12-14 14:02:09,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700768e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:09, skipping insertion in model container [2022-12-14 14:02:09,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:02:09" (1/1) ... [2022-12-14 14:02:09,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:02:09,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:02:10,278 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:02:10,706 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:02:10,711 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:02:10,712 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:02:10,714 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:02:10,715 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:02:10,732 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:02:10,737 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:02:10,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:02:10,751 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:02:10,768 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:02:10,809 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:02:10,811 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:02:10,812 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:02:10,814 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:02:10,815 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:02:10,819 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:02:10,821 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:02:10,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:02:10,937 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:02:10,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10 WrapperNode [2022-12-14 14:02:10,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:02:10,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:02:10,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:02:10,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:02:10,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:10,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,000 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-12-14 14:02:11,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:02:11,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:02:11,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:02:11,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:02:11,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:02:11,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:02:11,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:02:11,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:02:11,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (1/1) ... [2022-12-14 14:02:11,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:02:11,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:02:11,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:02:11,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:02:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 14:02:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 14:02:11,078 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 14:02:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:02:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 14:02:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:02:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:02:11,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:02:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:02:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 14:02:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 14:02:11,201 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:02:11,203 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:02:11,321 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:02:11,325 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:02:11,325 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 14:02:11,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:11 BoogieIcfgContainer [2022-12-14 14:02:11,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:02:11,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:02:11,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:02:11,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:02:11,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:02:09" (1/3) ... [2022-12-14 14:02:11,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622bdab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:02:11, skipping insertion in model container [2022-12-14 14:02:11,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:10" (2/3) ... [2022-12-14 14:02:11,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622bdab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:02:11, skipping insertion in model container [2022-12-14 14:02:11,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:11" (3/3) ... [2022-12-14 14:02:11,335 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_16_bad.i [2022-12-14 14:02:11,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:02:11,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:02:11,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:02:11,388 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;@67e1c5c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:02:11,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:02:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.5) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 14:02:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 14:02:11,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:02:11,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:02:11,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:02:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:02:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1022058412, now seen corresponding path program 1 times [2022-12-14 14:02:11,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:02:11,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369692124] [2022-12-14 14:02:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:02:11,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:02:11,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:02:11,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:02:11,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 14:02:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:02:11,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 14:02:11,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:02:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:02:11,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:02:11,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:02:11,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369692124] [2022-12-14 14:02:11,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369692124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:02:11,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:02:11,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:02:11,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712055865] [2022-12-14 14:02:11,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:02:11,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:02:11,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:02:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:02:11,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:02:11,564 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.5) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) 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) [2022-12-14 14:02:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:02:11,577 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-12-14 14:02:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:02:11,579 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) 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 [2022-12-14 14:02:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:02:11,583 INFO L225 Difference]: With dead ends: 42 [2022-12-14 14:02:11,583 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 14:02:11,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:02:11,587 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:02:11,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:02:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 14:02:11,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 14:02:11,615 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) [2022-12-14 14:02:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-12-14 14:02:11,616 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-12-14 14:02:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:02:11,617 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-12-14 14:02:11,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) 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) [2022-12-14 14:02:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-12-14 14:02:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 14:02:11,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:02:11,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:02:11,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:02:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:02:11,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:02:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:02:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1307314427, now seen corresponding path program 1 times [2022-12-14 14:02:11,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:02:11,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584210744] [2022-12-14 14:02:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:02:11,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:02:11,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:02:11,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:02:11,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 14:02:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:02:11,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:02:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:02:12,005 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 14:02:12,005 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:02:12,006 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:02:12,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:02:12,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 14:02:12,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:02:12,217 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 14:02:12,226 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:02:12,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:02:12 BoogieIcfgContainer [2022-12-14 14:02:12,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:02:12,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:02:12,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:02:12,286 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:02:12,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:11" (3/4) ... [2022-12-14 14:02:12,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:02:12,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:02:12,291 INFO L158 Benchmark]: Toolchain (without parser) took 2388.97ms. Allocated memory is still 88.1MB. Free memory was 52.4MB in the beginning and 37.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-12-14 14:02:12,291 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 65.0MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:02:12,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1035.33ms. Allocated memory is still 88.1MB. Free memory was 52.2MB in the beginning and 35.8MB in the end (delta: 16.4MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2022-12-14 14:02:12,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.72ms. Allocated memory is still 88.1MB. Free memory was 35.8MB in the beginning and 59.4MB in the end (delta: -23.6MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-12-14 14:02:12,293 INFO L158 Benchmark]: Boogie Preprocessor took 27.84ms. Allocated memory is still 88.1MB. Free memory was 59.4MB in the beginning and 57.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:02:12,293 INFO L158 Benchmark]: RCFGBuilder took 297.81ms. Allocated memory is still 88.1MB. Free memory was 57.3MB in the beginning and 43.3MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 14:02:12,294 INFO L158 Benchmark]: TraceAbstraction took 955.19ms. Allocated memory is still 88.1MB. Free memory was 42.6MB in the beginning and 38.2MB in the end (delta: 4.4MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2022-12-14 14:02:12,294 INFO L158 Benchmark]: Witness Printer took 4.31ms. Allocated memory is still 88.1MB. Free memory was 38.2MB in the beginning and 37.7MB in the end (delta: 473.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:02:12,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 65.0MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1035.33ms. Allocated memory is still 88.1MB. Free memory was 52.2MB in the beginning and 35.8MB in the end (delta: 16.4MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.72ms. Allocated memory is still 88.1MB. Free memory was 35.8MB in the beginning and 59.4MB in the end (delta: -23.6MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.84ms. Allocated memory is still 88.1MB. Free memory was 59.4MB in the beginning and 57.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.81ms. Allocated memory is still 88.1MB. Free memory was 57.3MB in the beginning and 43.3MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 955.19ms. Allocated memory is still 88.1MB. Free memory was 42.6MB in the beginning and 38.2MB in the end (delta: 4.4MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Witness Printer took 4.31ms. Allocated memory is still 88.1MB. Free memory was 38.2MB in the beginning and 37.7MB in the end (delta: 473.0kB). 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 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_multiply_16_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE 1 VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] 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] [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] - 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 29 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 14:02:12,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d3e6791-279c-46b6-96ab-cbe73250daa9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample