./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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_2c350067-e614-41f8-80f4-b8fde1d892a4/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 6b731b3e45cc745fc26f764e451c6f49e1c269922dce2bfc9965f3cdd36e32cc --- 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 15:36:06,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:36:06,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:36:06,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:36:06,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:36:06,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:36:06,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:36:06,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:36:06,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:36:06,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:36:06,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:36:06,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:36:06,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:36:06,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:36:06,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:36:06,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:36:06,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:36:06,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:36:06,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:36:06,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:36:06,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:36:06,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:36:06,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:36:06,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:36:06,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:36:06,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:36:06,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:36:06,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:36:06,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:36:06,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:36:06,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:36:06,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:36:06,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:36:06,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:36:06,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:36:06,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:36:06,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:36:06,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:36:06,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:36:06,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:36:06,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:36:06,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:36:07,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:36:07,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:36:07,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:36:07,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:36:07,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:36:07,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:36:07,009 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:36:07,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:36:07,010 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:36:07,010 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:36:07,011 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:36:07,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:36:07,012 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:36:07,012 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:36:07,012 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:36:07,012 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:36:07,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:36:07,013 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:36:07,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:36:07,013 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:36:07,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:36:07,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:36:07,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:36:07,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:36:07,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:36:07,015 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:36:07,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:36:07,015 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:36:07,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:36:07,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:36:07,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:36:07,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:07,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:36:07,017 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:36:07,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:36:07,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:36:07,017 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:36:07,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:36:07,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:36:07,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:36:07,018 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_2c350067-e614-41f8-80f4-b8fde1d892a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b731b3e45cc745fc26f764e451c6f49e1c269922dce2bfc9965f3cdd36e32cc [2022-11-23 15:36:07,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:36:07,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:36:07,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:36:07,439 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:36:07,440 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:36:07,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2022-11-23 15:36:10,997 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:36:11,480 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:36:11,486 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2022-11-23 15:36:11,523 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/data/478399a03/74adc616f96b48a48291a00f0691caa1/FLAGbbcebbeb4 [2022-11-23 15:36:11,542 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/data/478399a03/74adc616f96b48a48291a00f0691caa1 [2022-11-23 15:36:11,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:36:11,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:36:11,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:11,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:36:11,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:36:11,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:11" (1/1) ... [2022-11-23 15:36:11,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45922b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:11, skipping insertion in model container [2022-11-23 15:36:11,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:11" (1/1) ... [2022-11-23 15:36:11,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:36:11,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:36:12,140 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:36:12,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:12,896 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:36:12,917 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:36:12,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:13,163 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:36:13,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13 WrapperNode [2022-11-23 15:36:13,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:13,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:13,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:36:13,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:36:13,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,243 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-11-23 15:36:13,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:13,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:36:13,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:36:13,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:36:13,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,289 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:36:13,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:36:13,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:36:13,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:36:13,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (1/1) ... [2022-11-23 15:36:13,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:13,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:36:13,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:36:13,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:36:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:36:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:36:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:36:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:36:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:36:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:36:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:36:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:36:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:36:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:36:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:36:13,665 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:36:13,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:36:13,870 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:36:13,914 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:36:13,915 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:36:13,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:13 BoogieIcfgContainer [2022-11-23 15:36:13,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:36:13,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:36:13,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:36:13,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:36:13,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:11" (1/3) ... [2022-11-23 15:36:13,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8ae38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:13, skipping insertion in model container [2022-11-23 15:36:13,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:13" (2/3) ... [2022-11-23 15:36:13,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8ae38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:13, skipping insertion in model container [2022-11-23 15:36:13,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:13" (3/3) ... [2022-11-23 15:36:13,929 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2022-11-23 15:36:13,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:36:13,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:36:14,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:36:14,038 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;@3dd82045, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:36:14,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:36:14,042 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 15:36:14,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:36:14,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:14,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:36:14,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:36:14,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:14,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1388912109, now seen corresponding path program 1 times [2022-11-23 15:36:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:36:14,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102189929] [2022-11-23 15:36:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:36:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:14,239 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:36:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:14,310 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:36:14,313 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:36:14,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:36:14,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:36:14,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:36:14,330 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:36:14,340 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:36:14,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:36:14 BoogieIcfgContainer [2022-11-23 15:36:14,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:36:14,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:36:14,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:36:14,395 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:36:14,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:13" (3/4) ... [2022-11-23 15:36:14,401 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:36:14,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:36:14,404 INFO L158 Benchmark]: Toolchain (without parser) took 2852.72ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 79.9MB in the end (delta: 23.9MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-11-23 15:36:14,405 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:14,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1609.79ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 116.6MB in the end (delta: -12.8MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:14,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.21ms. Allocated memory is still 148.9MB. Free memory was 116.6MB in the beginning and 113.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:14,413 INFO L158 Benchmark]: Boogie Preprocessor took 61.64ms. Allocated memory is still 148.9MB. Free memory was 113.5MB in the beginning and 112.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:14,417 INFO L158 Benchmark]: RCFGBuilder took 611.71ms. Allocated memory is still 148.9MB. Free memory was 112.0MB in the beginning and 97.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:36:14,418 INFO L158 Benchmark]: TraceAbstraction took 471.08ms. Allocated memory is still 148.9MB. Free memory was 96.7MB in the beginning and 80.6MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:36:14,419 INFO L158 Benchmark]: Witness Printer took 7.81ms. Allocated memory is still 148.9MB. Free memory was 80.6MB in the beginning and 79.9MB in the end (delta: 637.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:14,422 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 117.4MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1609.79ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 116.6MB in the end (delta: -12.8MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.21ms. Allocated memory is still 148.9MB. Free memory was 116.6MB in the beginning and 113.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.64ms. Allocated memory is still 148.9MB. Free memory was 113.5MB in the beginning and 112.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 611.71ms. Allocated memory is still 148.9MB. Free memory was 112.0MB in the beginning and 97.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 471.08ms. Allocated memory is still 148.9MB. Free memory was 96.7MB in the beginning and 80.6MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.81ms. Allocated memory is still 148.9MB. Free memory was 80.6MB in the beginning and 79.9MB in the end (delta: 637.4kB). 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: 1568]: 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); [L1576] 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) [L1576] RET printLine("Calling bad()...") VAL [#in~argv={1073741830:1073741829}, argc=1073741828, argv={1073741830:1073741829}, 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=1073741828] [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_18_bad() [L1550] int data; [L1551] 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)] = ""; [L1568] data-- VAL [data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1568]: 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 15:36:14,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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 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_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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_2c350067-e614-41f8-80f4-b8fde1d892a4/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 6b731b3e45cc745fc26f764e451c6f49e1c269922dce2bfc9965f3cdd36e32cc --- 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 15:36:17,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:36:17,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:36:17,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:36:17,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:36:17,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:36:17,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:36:17,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:36:17,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:36:17,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:36:17,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:36:17,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:36:17,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:36:17,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:36:17,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:36:17,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:36:17,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:36:17,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:36:17,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:36:17,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:36:17,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:36:17,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:36:17,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:36:17,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:36:17,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:36:17,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:36:17,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:36:17,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:36:17,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:36:17,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:36:17,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:36:17,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:36:17,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:36:17,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:36:17,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:36:17,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:36:17,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:36:17,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:36:17,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:36:17,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:36:17,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:36:17,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 15:36:17,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:36:17,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:36:17,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:36:17,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:36:17,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:36:17,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:36:17,571 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:36:17,571 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:36:17,571 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:36:17,572 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:36:17,573 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:36:17,573 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:36:17,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:36:17,575 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:36:17,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:36:17,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:36:17,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:36:17,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:36:17,576 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:36:17,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:36:17,577 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:36:17,577 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:36:17,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:36:17,578 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:36:17,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:36:17,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:36:17,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:36:17,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:36:17,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:17,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:36:17,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:36:17,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:36:17,581 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:36:17,581 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:36:17,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:36:17,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:36:17,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:36:17,582 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_2c350067-e614-41f8-80f4-b8fde1d892a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b731b3e45cc745fc26f764e451c6f49e1c269922dce2bfc9965f3cdd36e32cc [2022-11-23 15:36:17,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:36:18,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:36:18,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:36:18,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:36:18,007 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:36:18,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2022-11-23 15:36:21,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:36:21,827 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:36:21,827 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2022-11-23 15:36:21,876 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/data/5d0184fa3/9002dea6c6734d9a81d3d6e0c04bf7b8/FLAGa3d736eb2 [2022-11-23 15:36:21,902 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/data/5d0184fa3/9002dea6c6734d9a81d3d6e0c04bf7b8 [2022-11-23 15:36:21,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:36:21,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:36:21,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:21,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:36:21,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:36:21,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:21" (1/1) ... [2022-11-23 15:36:21,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a82386b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21, skipping insertion in model container [2022-11-23 15:36:21,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:21" (1/1) ... [2022-11-23 15:36:21,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:36:22,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:36:22,684 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:36:23,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:23,576 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:36:23,616 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:36:23,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:23,925 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:36:23,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23 WrapperNode [2022-11-23 15:36:23,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:23,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:23,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:36:23,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:36:23,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:23,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:23,993 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-23 15:36:23,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:23,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:36:23,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:36:23,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:36:24,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,028 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:36:24,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:36:24,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:36:24,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:36:24,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (1/1) ... [2022-11-23 15:36:24,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:24,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:36:24,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:36:24,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:36:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:36:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:36:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:36:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:36:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:36:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:36:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:36:24,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:36:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:36:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:36:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 15:36:24,349 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:36:24,352 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:36:24,666 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:36:24,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:36:24,674 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:36:24,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:24 BoogieIcfgContainer [2022-11-23 15:36:24,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:36:24,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:36:24,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:36:24,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:36:24,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:21" (1/3) ... [2022-11-23 15:36:24,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1795e440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:24, skipping insertion in model container [2022-11-23 15:36:24,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:23" (2/3) ... [2022-11-23 15:36:24,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1795e440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:24, skipping insertion in model container [2022-11-23 15:36:24,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:24" (3/3) ... [2022-11-23 15:36:24,702 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2022-11-23 15:36:24,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:36:24,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:36:24,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:36:24,806 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;@7801da6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:36:24,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:36:24,814 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 15:36:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:36:24,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:24,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:36:24,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:36:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1965623918, now seen corresponding path program 1 times [2022-11-23 15:36:24,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:36:24,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542498434] [2022-11-23 15:36:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:24,857 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 15:36:24,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:36:24,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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 15:36:24,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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 15:36:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:25,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:36:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:25,236 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 15:36:25,239 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:36:25,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:36:25,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:36:25,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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 15:36:25,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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 15:36:25,462 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:36:25,469 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:36:25,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:36:25 BoogieIcfgContainer [2022-11-23 15:36:25,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:36:25,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:36:25,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:36:25,501 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:36:25,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:24" (3/4) ... [2022-11-23 15:36:25,507 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:36:25,507 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:36:25,511 INFO L158 Benchmark]: Toolchain (without parser) took 3595.69ms. 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 52.6MB in the end (delta: -6.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-11-23 15:36:25,512 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory is still 35.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:25,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2010.20ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 33.8MB in the end (delta: 12.3MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-11-23 15:36:25,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.75ms. Allocated memory is still 71.3MB. Free memory was 33.8MB in the beginning and 30.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:36:25,514 INFO L158 Benchmark]: Boogie Preprocessor took 40.88ms. Allocated memory is still 71.3MB. Free memory was 30.6MB in the beginning and 28.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:25,515 INFO L158 Benchmark]: RCFGBuilder took 640.59ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 28.5MB in the beginning and 47.9MB in the end (delta: -19.3MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-11-23 15:36:25,515 INFO L158 Benchmark]: TraceAbstraction took 806.27ms. Allocated memory is still 86.0MB. Free memory was 47.0MB in the beginning and 52.6MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:25,516 INFO L158 Benchmark]: Witness Printer took 6.60ms. Allocated memory is still 86.0MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:25,522 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 56.6MB. Free memory is still 35.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2010.20ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 33.8MB in the end (delta: 12.3MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.75ms. Allocated memory is still 71.3MB. Free memory was 33.8MB in the beginning and 30.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.88ms. Allocated memory is still 71.3MB. Free memory was 30.6MB in the beginning and 28.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 640.59ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 28.5MB in the beginning and 47.9MB in the end (delta: -19.3MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * TraceAbstraction took 806.27ms. Allocated memory is still 86.0MB. Free memory was 47.0MB in the beginning and 52.6MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.60ms. Allocated memory is still 86.0MB. Free memory is still 52.6MB. 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: 1568]: 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] [L1576] 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) [L1576] 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] [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_18_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] [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] [L1568] data-- VAL [data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1568]: 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: 0.7s, 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, 13 NumberOfCodeBlocks, 13 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 15:36:25,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c350067-e614-41f8-80f4-b8fde1d892a4/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