./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c6df82ed5c140904dabe43b954a5cb418c4c35c903551258d5841b5d765d4a2c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:14:48,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:14:48,297 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-24 00:14:48,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:14:48,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:14:48,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:14:48,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:14:48,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:14:48,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:14:48,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:14:48,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:14:48,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:14:48,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:14:48,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:14:48,362 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:14:48,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:14:48,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:14:48,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:14:48,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:14:48,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:14:48,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:14:48,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:14:48,364 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 00:14:48,364 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:14:48,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:14:48,365 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:14:48,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:14:48,365 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:14:48,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:14:48,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:14:48,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:14:48,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:14:48,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:14:48,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:14:48,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:14:48,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:14:48,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:14:48,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:14:48,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:14:48,368 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:14:48,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:14:48,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:14:48,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:14:48,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:14:48,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:14:48,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:14:48,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:14:48,369 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> Automizer 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 -> c6df82ed5c140904dabe43b954a5cb418c4c35c903551258d5841b5d765d4a2c [2024-11-24 00:14:48,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:14:48,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:14:48,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:14:48,783 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:14:48,783 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:14:48,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i [2024-11-24 00:14:52,440 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data/c5e8aa0fe/c284bec01bc8484b817a09a91a79bafc/FLAG6842b6cad [2024-11-24 00:14:53,012 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:14:53,013 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i [2024-11-24 00:14:53,040 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data/c5e8aa0fe/c284bec01bc8484b817a09a91a79bafc/FLAG6842b6cad [2024-11-24 00:14:53,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data/c5e8aa0fe/c284bec01bc8484b817a09a91a79bafc [2024-11-24 00:14:53,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:14:53,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:14:53,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:14:53,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:14:53,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:14:53,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:14:53" (1/1) ... [2024-11-24 00:14:53,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1563c000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:53, skipping insertion in model container [2024-11-24 00:14:53,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:14:53" (1/1) ... [2024-11-24 00:14:53,159 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:14:54,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:14:54,458 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:14:54,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:14:54,768 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:14:54,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54 WrapperNode [2024-11-24 00:14:54,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:14:54,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:14:54,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:14:54,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:14:54,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,822 INFO L138 Inliner]: procedures = 499, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2024-11-24 00:14:54,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:14:54,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:14:54,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:14:54,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:14:54,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,855 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-11-24 00:14:54,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,865 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:14:54,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:14:54,872 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:14:54,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:14:54,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (1/1) ... [2024-11-24 00:14:54,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:14:54,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:14:54,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:14:54,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:14:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-24 00:14:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-24 00:14:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:14:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:14:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:14:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:14:55,160 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:14:55,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:14:55,322 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-24 00:14:55,322 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:14:55,334 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:14:55,334 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:14:55,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:14:55 BoogieIcfgContainer [2024-11-24 00:14:55,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:14:55,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:14:55,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:14:55,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:14:55,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:14:53" (1/3) ... [2024-11-24 00:14:55,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1aabb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:14:55, skipping insertion in model container [2024-11-24 00:14:55,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:14:54" (2/3) ... [2024-11-24 00:14:55,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1aabb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:14:55, skipping insertion in model container [2024-11-24 00:14:55,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:14:55" (3/3) ... [2024-11-24 00:14:55,346 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i [2024-11-24 00:14:55,362 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:14:55,364 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 00:14:55,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:14:55,462 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@198daa3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:14:55,462 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:14:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2024-11-24 00:14:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 00:14:55,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:14:55,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:14:55,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 00:14:55,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:14:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2024-11-24 00:14:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:14:55,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448003469] [2024-11-24 00:14:55,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:14:55,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:14:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:14:55,723 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:14:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:14:55,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:14:55,799 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:14:55,800 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-24 00:14:55,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-24 00:14:55,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:14:55,808 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-24 00:14:55,850 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:14:55,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:14:55 BoogieIcfgContainer [2024-11-24 00:14:55,855 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:14:55,856 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:14:55,856 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:14:55,856 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:14:55,858 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:14:55" (3/4) ... [2024-11-24 00:14:55,861 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 00:14:55,862 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:14:55,864 INFO L158 Benchmark]: Toolchain (without parser) took 2799.59ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 73.8MB in the end (delta: 26.5MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2024-11-24 00:14:55,864 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 167.8MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:14:55,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1704.65ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 40.9MB in the end (delta: 59.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-24 00:14:55,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.97ms. Allocated memory is still 142.6MB. Free memory was 40.9MB in the beginning and 38.2MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:14:55,867 INFO L158 Benchmark]: Boogie Preprocessor took 47.09ms. Allocated memory is still 142.6MB. Free memory was 38.2MB in the beginning and 36.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:14:55,868 INFO L158 Benchmark]: RCFGBuilder took 462.96ms. Allocated memory is still 142.6MB. Free memory was 36.5MB in the beginning and 92.3MB in the end (delta: -55.8MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-11-24 00:14:55,868 INFO L158 Benchmark]: TraceAbstraction took 518.35ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 74.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:14:55,869 INFO L158 Benchmark]: Witness Printer took 5.70ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 73.8MB in the end (delta: 683.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:14:55,876 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 167.8MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1704.65ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 40.9MB in the end (delta: 59.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.97ms. Allocated memory is still 142.6MB. Free memory was 40.9MB in the beginning and 38.2MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.09ms. Allocated memory is still 142.6MB. Free memory was 38.2MB in the beginning and 36.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 462.96ms. Allocated memory is still 142.6MB. Free memory was 36.5MB in the beginning and 92.3MB in the end (delta: -55.8MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 518.35ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 74.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.70ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 73.8MB in the end (delta: 683.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554, overapproximation of fgets at line 1552. 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] [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_postdec_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] data = atoi(inputBuffer) [L1561] return data; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \result=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=23occurred 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, 12 NumberOfCodeBlocks, 12 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-24 00:14:55,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c6df82ed5c140904dabe43b954a5cb418c4c35c903551258d5841b5d765d4a2c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:14:59,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:14:59,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-24 00:14:59,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:14:59,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:14:59,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-24 00:14:59,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:14:59,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:14:59,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:14:59,378 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:14:59,379 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:14:59,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:14:59,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:14:59,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:14:59,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:14:59,382 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:14:59,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:14:59,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:14:59,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:14:59,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:14:59,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:14:59,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:14:59,382 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:14:59,383 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:14:59,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:14:59,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:14:59,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:14:59,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:14:59,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:14:59,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:14:59,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:14:59,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:14:59,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:14:59,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:14:59,384 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:14:59,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:14:59,385 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 00:14:59,385 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 00:14:59,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:14:59,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:14:59,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:14:59,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:14:59,385 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> Automizer 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 -> c6df82ed5c140904dabe43b954a5cb418c4c35c903551258d5841b5d765d4a2c [2024-11-24 00:14:59,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:14:59,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:14:59,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:14:59,777 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:14:59,778 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:14:59,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i [2024-11-24 00:15:03,374 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data/37521da97/3b09ce6717e64cfdbdfd3ceaab12bc89/FLAG8cce6d1b0 [2024-11-24 00:15:03,987 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:15:03,987 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i [2024-11-24 00:15:04,032 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data/37521da97/3b09ce6717e64cfdbdfd3ceaab12bc89/FLAG8cce6d1b0 [2024-11-24 00:15:04,060 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/data/37521da97/3b09ce6717e64cfdbdfd3ceaab12bc89 [2024-11-24 00:15:04,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:15:04,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:15:04,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:15:04,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:15:04,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:15:04,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:15:04" (1/1) ... [2024-11-24 00:15:04,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114d4331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:04, skipping insertion in model container [2024-11-24 00:15:04,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:15:04" (1/1) ... [2024-11-24 00:15:04,160 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:15:05,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:15:05,381 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:15:05,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:15:05,773 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:15:05,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05 WrapperNode [2024-11-24 00:15:05,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:15:05,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:15:05,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:15:05,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:15:05,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,841 INFO L138 Inliner]: procedures = 504, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-11-24 00:15:05,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:15:05,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:15:05,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:15:05,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:15:05,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,856 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,871 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-11-24 00:15:05,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,881 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:15:05,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:15:05,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:15:05,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:15:05,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (1/1) ... [2024-11-24 00:15:05,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:15:05,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:15:05,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:15:05,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:15:05,998 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-24 00:15:05,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-24 00:15:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 00:15:05,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:15:06,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:15:06,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:15:06,243 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:15:06,245 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:15:06,482 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-24 00:15:06,482 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:15:06,495 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:15:06,495 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:15:06,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:15:06 BoogieIcfgContainer [2024-11-24 00:15:06,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:15:06,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:15:06,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:15:06,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:15:06,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:15:04" (1/3) ... [2024-11-24 00:15:06,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ff768d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:15:06, skipping insertion in model container [2024-11-24 00:15:06,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:15:05" (2/3) ... [2024-11-24 00:15:06,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ff768d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:15:06, skipping insertion in model container [2024-11-24 00:15:06,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:15:06" (3/3) ... [2024-11-24 00:15:06,510 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i [2024-11-24 00:15:06,526 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:15:06,527 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_42_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 00:15:06,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:15:06,619 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@18b65fd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:15:06,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:15:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2024-11-24 00:15:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 00:15:06,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:15:06,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:15:06,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 00:15:06,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:15:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2024-11-24 00:15:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:15:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244185556] [2024-11-24 00:15:06,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:15:06,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:15:06,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:15:06,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:15:06,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:15:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:15:06,937 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:15:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:15:07,029 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-24 00:15:07,031 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:15:07,033 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-24 00:15:07,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-24 00:15:07,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:15:07,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:15:07,241 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-24 00:15:07,284 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:15:07,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:15:07 BoogieIcfgContainer [2024-11-24 00:15:07,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:15:07,293 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:15:07,293 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:15:07,294 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:15:07,295 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:15:06" (3/4) ... [2024-11-24 00:15:07,298 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 00:15:07,299 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:15:07,301 INFO L158 Benchmark]: Toolchain (without parser) took 3234.95ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 77.9MB in the end (delta: 11.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-11-24 00:15:07,301 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:15:07,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1705.25ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 77.1MB in the end (delta: 12.4MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. [2024-11-24 00:15:07,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.50ms. Allocated memory is still 117.4MB. Free memory was 76.4MB in the beginning and 74.0MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:15:07,304 INFO L158 Benchmark]: Boogie Preprocessor took 48.78ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 71.8MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:15:07,305 INFO L158 Benchmark]: RCFGBuilder took 604.06ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 58.0MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:15:07,309 INFO L158 Benchmark]: TraceAbstraction took 792.82ms. Allocated memory is still 117.4MB. Free memory was 58.0MB in the beginning and 77.9MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:15:07,309 INFO L158 Benchmark]: Witness Printer took 6.36ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 77.9MB in the end (delta: 9.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:15:07,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1705.25ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 77.1MB in the end (delta: 12.4MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.50ms. Allocated memory is still 117.4MB. Free memory was 76.4MB in the beginning and 74.0MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.78ms. Allocated memory is still 117.4MB. Free memory was 74.0MB in the beginning and 71.8MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 604.06ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 58.0MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 792.82ms. Allocated memory is still 117.4MB. Free memory was 58.0MB in the beginning and 77.9MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.36ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 77.9MB in the end (delta: 9.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554, overapproximation of fgets at line 1552. 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] [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_postdec_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] data = atoi(inputBuffer) [L1561] return data; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \result=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 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=23occurred 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, 12 NumberOfCodeBlocks, 12 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-24 00:15:07,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b075bed-b4f3-4643-b773-64c4b28c659d/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample