./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW --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 addf942ede46230b25a4dc028edf6be01eaa699ab60b65838943e2936aa69ff2 --- 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-4e7fbc6 [2022-11-23 15:40:07,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:40:07,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:40:07,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:40:07,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:40:07,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:40:07,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:40:07,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:40:07,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:40:07,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:40:07,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:40:07,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:40:07,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:40:07,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:40:07,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:40:07,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:40:07,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:40:07,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:40:07,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:40:07,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:40:07,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:40:07,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:40:07,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:40:07,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:40:07,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:40:07,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:40:07,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:40:07,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:40:07,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:40:07,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:40:07,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:40:07,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:40:07,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:40:07,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:40:07,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:40:07,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:40:07,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:40:07,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:40:07,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:40:07,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:40:07,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:40:07,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:40:07,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:40:07,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:40:07,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:40:07,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:40:07,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:40:07,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:40:07,738 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:40:07,738 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:40:07,738 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:40:07,738 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:40:07,739 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:40:07,740 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:40:07,740 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:40:07,740 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:40:07,740 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:40:07,741 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:40:07,741 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:40:07,741 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:40:07,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:40:07,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:40:07,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:40:07,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:40:07,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:40:07,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:40:07,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:40:07,744 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:40:07,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:40:07,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:40:07,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:40:07,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:40:07,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:40:07,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:40:07,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:40:07,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:40:07,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:40:07,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:40:07,747 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:40:07,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:40:07,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:40:07,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:40:07,748 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_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> addf942ede46230b25a4dc028edf6be01eaa699ab60b65838943e2936aa69ff2 [2022-11-23 15:40:08,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:40:08,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:40:08,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:40:08,090 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:40:08,091 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:40:08,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i [2022-11-23 15:40:11,078 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:40:11,442 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:40:11,442 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i [2022-11-23 15:40:11,472 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/data/13f9f64ac/4b1a60f053ec4ec38e373b4581e3cfaa/FLAGf2275a92b [2022-11-23 15:40:11,492 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/data/13f9f64ac/4b1a60f053ec4ec38e373b4581e3cfaa [2022-11-23 15:40:11,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:40:11,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:40:11,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:40:11,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:40:11,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:40:11,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:11" (1/1) ... [2022-11-23 15:40:11,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0721f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:11, skipping insertion in model container [2022-11-23 15:40:11,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:11" (1/1) ... [2022-11-23 15:40:11,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:40:11,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:40:12,021 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:40:12,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:40:12,643 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:40:12,666 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:40:12,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:40:12,870 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:40:12,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12 WrapperNode [2022-11-23 15:40:12,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:40:12,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:40:12,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:40:12,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:40:12,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:12,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:12,955 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 60 [2022-11-23 15:40:12,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:40:12,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:40:12,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:40:12,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:40:12,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:12,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:12,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:12,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:12,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:13,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:13,013 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:13,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:13,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:40:13,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:40:13,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:40:13,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:40:13,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (1/1) ... [2022-11-23 15:40:13,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:40:13,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:13,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:40:13,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:40:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:40:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:40:13,109 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:40:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:40:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:40:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:40:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:40:13,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:40:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:40:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:40:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:40:13,271 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:40:13,273 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:40:13,410 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:40:13,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:40:13,475 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:40:13,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:13 BoogieIcfgContainer [2022-11-23 15:40:13,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:40:13,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:40:13,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:40:13,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:40:13,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:40:11" (1/3) ... [2022-11-23 15:40:13,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c5fd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:13, skipping insertion in model container [2022-11-23 15:40:13,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:12" (2/3) ... [2022-11-23 15:40:13,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c5fd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:13, skipping insertion in model container [2022-11-23 15:40:13,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:13" (3/3) ... [2022-11-23 15:40:13,501 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i [2022-11-23 15:40:13,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:40:13,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:40:13,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:40:13,571 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;@45b2c671, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:40:13,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:40:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:40:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:40:13,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:13,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:13,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:40:13,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1971545999, now seen corresponding path program 1 times [2022-11-23 15:40:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:40:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593838632] [2022-11-23 15:40:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:40:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:40:13,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:40:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:40:13,832 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:40:13,838 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:40:13,839 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:40:13,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:40:13,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:40:13,849 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:40:13,858 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:40:13,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:40:13 BoogieIcfgContainer [2022-11-23 15:40:13,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:40:13,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:40:13,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:40:13,891 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:40:13,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:13" (3/4) ... [2022-11-23 15:40:13,895 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:40:13,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:40:13,898 INFO L158 Benchmark]: Toolchain (without parser) took 2399.77ms. Allocated memory is still 174.1MB. Free memory was 127.2MB in the beginning and 84.6MB in the end (delta: 42.7MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2022-11-23 15:40:13,899 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:40:13,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1371.05ms. Allocated memory is still 174.1MB. Free memory was 127.2MB in the beginning and 121.4MB in the end (delta: 5.8MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2022-11-23 15:40:13,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.56ms. Allocated memory is still 174.1MB. Free memory was 121.4MB in the beginning and 119.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:40:13,903 INFO L158 Benchmark]: Boogie Preprocessor took 60.83ms. Allocated memory is still 174.1MB. Free memory was 119.0MB in the beginning and 117.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:40:13,904 INFO L158 Benchmark]: RCFGBuilder took 460.46ms. Allocated memory is still 174.1MB. Free memory was 117.2MB in the beginning and 102.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:40:13,905 INFO L158 Benchmark]: TraceAbstraction took 395.33ms. Allocated memory is still 174.1MB. Free memory was 101.3MB in the beginning and 84.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:40:13,909 INFO L158 Benchmark]: Witness Printer took 5.62ms. Allocated memory is still 174.1MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:40:13,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1371.05ms. Allocated memory is still 174.1MB. Free memory was 127.2MB in the beginning and 121.4MB in the end (delta: 5.8MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.56ms. Allocated memory is still 174.1MB. Free memory was 121.4MB in the beginning and 119.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.83ms. Allocated memory is still 174.1MB. Free memory was 119.0MB in the beginning and 117.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.46ms. Allocated memory is still 174.1MB. Free memory was 117.2MB in the beginning and 102.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 395.33ms. Allocated memory is still 174.1MB. Free memory was 101.3MB in the beginning and 84.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.62ms. Allocated memory is still 174.1MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1578]: 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); [L1570] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1570] RET printLine("Calling bad()...") VAL [#in~argv={1073741830:1073741828}, argc=1073741826, argv={1073741830:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=1073741826] [L1571] CALL CWE191_Integer_Underflow__int_fgets_postdec_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_postdec_65b_badSink; [L1553] data = 0 [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)] = ""; [L1565] CALL funcPtr(data) [L1578] data-- VAL [data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~data-unknown=-2147483648] - UnprovableResult [Line: 1578]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:40:13,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW --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 addf942ede46230b25a4dc028edf6be01eaa699ab60b65838943e2936aa69ff2 --- 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-4e7fbc6 [2022-11-23 15:40:16,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:40:16,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:40:16,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:40:16,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:40:16,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:40:16,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:40:16,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:40:16,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:40:16,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:40:16,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:40:16,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:40:16,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:40:16,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:40:16,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:40:16,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:40:16,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:40:16,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:40:16,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:40:16,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:40:16,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:40:16,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:40:16,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:40:16,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:40:16,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:40:16,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:40:16,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:40:16,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:40:16,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:40:16,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:40:16,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:40:16,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:40:16,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:40:16,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:40:16,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:40:16,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:40:16,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:40:16,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:40:16,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:40:16,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:40:16,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:40:16,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 15:40:16,587 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:40:16,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:40:16,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:40:16,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:40:16,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:40:16,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:40:16,591 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:40:16,591 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:40:16,591 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:40:16,591 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:40:16,592 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:40:16,593 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:40:16,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:40:16,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:40:16,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:40:16,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:40:16,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:40:16,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:40:16,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:40:16,595 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:40:16,595 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:40:16,595 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:40:16,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:40:16,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:40:16,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:40:16,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:40:16,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:40:16,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:40:16,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:40:16,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:40:16,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:40:16,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:40:16,598 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:40:16,598 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:40:16,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:40:16,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:40:16,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:40:16,599 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_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> addf942ede46230b25a4dc028edf6be01eaa699ab60b65838943e2936aa69ff2 [2022-11-23 15:40:17,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:40:17,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:40:17,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:40:17,036 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:40:17,037 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:40:17,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i [2022-11-23 15:40:20,275 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:40:20,723 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:40:20,724 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i [2022-11-23 15:40:20,748 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/data/7e1b845dd/06438de955984bfe822d250377b134a9/FLAGdfddf2303 [2022-11-23 15:40:20,763 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/data/7e1b845dd/06438de955984bfe822d250377b134a9 [2022-11-23 15:40:20,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:40:20,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:40:20,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:40:20,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:40:20,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:40:20,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:20" (1/1) ... [2022-11-23 15:40:20,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@561b560e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:20, skipping insertion in model container [2022-11-23 15:40:20,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:40:20" (1/1) ... [2022-11-23 15:40:20,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:40:20,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:40:21,334 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:40:21,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:40:21,894 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:40:21,912 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:40:21,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:40:22,205 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:40:22,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22 WrapperNode [2022-11-23 15:40:22,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:40:22,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:40:22,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:40:22,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:40:22,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,290 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2022-11-23 15:40:22,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:40:22,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:40:22,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:40:22,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:40:22,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,364 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:40:22,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:40:22,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:40:22,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:40:22,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (1/1) ... [2022-11-23 15:40:22,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:40:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:40:22,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:40:22,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:40:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:40:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:40:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:40:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:40:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:40:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:40:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:40:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:40:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:40:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:40:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 15:40:22,698 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:40:22,699 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:40:22,898 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:40:22,903 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:40:22,904 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:40:22,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:22 BoogieIcfgContainer [2022-11-23 15:40:22,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:40:22,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:40:22,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:40:22,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:40:22,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:40:20" (1/3) ... [2022-11-23 15:40:22,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60cfc201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:22, skipping insertion in model container [2022-11-23 15:40:22,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:40:22" (2/3) ... [2022-11-23 15:40:22,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60cfc201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:40:22, skipping insertion in model container [2022-11-23 15:40:22,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:22" (3/3) ... [2022-11-23 15:40:22,921 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_65_bad.i [2022-11-23 15:40:22,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:40:22,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:40:22,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:40:22,994 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;@6e233717, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:40:22,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:40:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:40:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:40:23,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:40:23,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:40:23,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:40:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:40:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-11-23 15:40:23,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:40:23,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833445267] [2022-11-23 15:40:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:40:23,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:40:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:40:23,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:40:23,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:40:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:40:23,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:40:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:40:23,324 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 15:40:23,326 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:40:23,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:40:23,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:40:23,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:40:23,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:40:23,544 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:40:23,552 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:40:23,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:40:23 BoogieIcfgContainer [2022-11-23 15:40:23,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:40:23,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:40:23,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:40:23,599 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:40:23,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:40:22" (3/4) ... [2022-11-23 15:40:23,602 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:40:23,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:40:23,604 INFO L158 Benchmark]: Toolchain (without parser) took 2836.63ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 46.3MB in the beginning and 48.9MB in the end (delta: -2.5MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-11-23 15:40:23,604 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 56.6MB. Free memory was 35.1MB in the beginning and 35.1MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:40:23,605 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1438.16ms. Allocated memory is still 71.3MB. Free memory was 46.2MB in the beginning and 29.9MB in the end (delta: 16.2MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-11-23 15:40:23,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.64ms. Allocated memory is still 71.3MB. Free memory was 29.9MB in the beginning and 27.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:40:23,606 INFO L158 Benchmark]: Boogie Preprocessor took 80.65ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 27.0MB in the beginning and 58.6MB in the end (delta: -31.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:40:23,607 INFO L158 Benchmark]: RCFGBuilder took 532.78ms. Allocated memory is still 86.0MB. Free memory was 58.6MB in the beginning and 44.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:40:23,608 INFO L158 Benchmark]: TraceAbstraction took 689.69ms. Allocated memory is still 86.0MB. Free memory was 43.5MB in the beginning and 49.3MB in the end (delta: -5.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:40:23,608 INFO L158 Benchmark]: Witness Printer took 4.17ms. Allocated memory is still 86.0MB. Free memory was 49.3MB in the beginning and 48.9MB in the end (delta: 465.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:40:23,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 56.6MB. Free memory was 35.1MB in the beginning and 35.1MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1438.16ms. Allocated memory is still 71.3MB. Free memory was 46.2MB in the beginning and 29.9MB in the end (delta: 16.2MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.64ms. Allocated memory is still 71.3MB. Free memory was 29.9MB in the beginning and 27.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.65ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 27.0MB in the beginning and 58.6MB in the end (delta: -31.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 532.78ms. Allocated memory is still 86.0MB. Free memory was 58.6MB in the beginning and 44.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 689.69ms. Allocated memory is still 86.0MB. Free memory was 43.5MB in the beginning and 49.3MB in the end (delta: -5.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.17ms. Allocated memory is still 86.0MB. Free memory was 49.3MB in the beginning and 48.9MB in the end (delta: 465.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1578]: 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] [L1570] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1570] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=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, unknown-#in~argc-unknown=12] [L1571] CALL CWE191_Integer_Underflow__int_fgets_postdec_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_postdec_65b_badSink; [L1553] data = 0 [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)] = ""; [L1565] CALL funcPtr(data) [L1578] data-- VAL [data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~data-unknown=-2147483648] - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:40:23,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_155f7097-f512-4502-849a-1676e7e468b4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample