./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_21_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1 --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 211f5b0a18e30109e888d9a4f4d46cbe008bcfb572b01ce834f74224b9209b10 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:52:57,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:52:57,728 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-12-02 07:52:57,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:52:57,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:52:57,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:52:57,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:52:57,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:52:57,755 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:52:57,755 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:52:57,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:52:57,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:52:57,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:52:57,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:52:57,756 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:52:57,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:52:57,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:52:57,757 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:52:57,758 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:52:57,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:52:57,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:52:57,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:52:57,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:52:57,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:52:57,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:52:57,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:52:57,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:52:57,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:52:57,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:52:57,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:52:57,759 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_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1 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 -> 211f5b0a18e30109e888d9a4f4d46cbe008bcfb572b01ce834f74224b9209b10 [2024-12-02 07:52:57,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:52:57,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:52:57,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:52:57,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:52:57,976 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:52:57,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_21_bad.i [2024-12-02 07:53:00,592 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data/963450fea/d62eaada09914353b8722a5edd54f5c3/FLAG84849f3cc [2024-12-02 07:53:00,898 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:53:00,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_21_bad.i [2024-12-02 07:53:00,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data/963450fea/d62eaada09914353b8722a5edd54f5c3/FLAG84849f3cc [2024-12-02 07:53:01,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data/963450fea/d62eaada09914353b8722a5edd54f5c3 [2024-12-02 07:53:01,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:53:01,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:53:01,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:53:01,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:53:01,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:53:01,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:53:01" (1/1) ... [2024-12-02 07:53:01,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6398066a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:01, skipping insertion in model container [2024-12-02 07:53:01,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:53:01" (1/1) ... [2024-12-02 07:53:01,210 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:53:01,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:53:01,869 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:53:01,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:53:02,037 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:53:02,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02 WrapperNode [2024-12-02 07:53:02,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:53:02,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:53:02,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:53:02,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:53:02,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,081 INFO L138 Inliner]: procedures = 499, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-12-02 07:53:02,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:53:02,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:53:02,082 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:53:02,082 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:53:02,088 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,099 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]. [2024-12-02 07:53:02,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,102 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:53:02,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:53:02,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:53:02,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:53:02,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (1/1) ... [2024-12-02 07:53:02,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:53:02,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:53:02,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:53:02,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:53:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-02 07:53:02,163 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-02 07:53:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:53:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:53:02,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:53:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:53:02,269 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:53:02,270 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:53:02,355 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-02 07:53:02,355 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:53:02,362 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:53:02,363 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 07:53:02,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:02 BoogieIcfgContainer [2024-12-02 07:53:02,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:53:02,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:53:02,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:53:02,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:53:02,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:53:01" (1/3) ... [2024-12-02 07:53:02,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df4a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:53:02, skipping insertion in model container [2024-12-02 07:53:02,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:02" (2/3) ... [2024-12-02 07:53:02,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df4a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:53:02, skipping insertion in model container [2024-12-02 07:53:02,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:02" (3/3) ... [2024-12-02 07:53:02,372 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_21_bad.i [2024-12-02 07:53:02,387 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:53:02,388 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_21_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-12-02 07:53:02,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:53:02,447 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;@181e9ef6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:53:02,447 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:53:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 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) [2024-12-02 07:53:02,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 07:53:02,456 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:02,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:53:02,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-12-02 07:53:02,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:02,462 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2024-12-02 07:53:02,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:53:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777724000] [2024-12-02 07:53:02,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:02,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:53:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:53:02,575 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:53:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:53:02,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 07:53:02,614 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 07:53:02,615 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-12-02 07:53:02,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-12-02 07:53:02,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:53:02,622 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 07:53:02,642 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 07:53:02,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:53:02 BoogieIcfgContainer [2024-12-02 07:53:02,645 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 07:53:02,645 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:53:02,645 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:53:02,645 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:53:02,646 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:02" (3/4) ... [2024-12-02 07:53:02,648 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 07:53:02,649 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:53:02,650 INFO L158 Benchmark]: Toolchain (without parser) took 1476.23ms. Allocated memory is still 142.6MB. Free memory was 113.6MB in the beginning and 80.8MB in the end (delta: 32.8MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2024-12-02 07:53:02,650 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:53:02,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 863.55ms. Allocated memory is still 142.6MB. Free memory was 113.6MB in the beginning and 55.2MB in the end (delta: 58.4MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-12-02 07:53:02,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.47ms. Allocated memory is still 142.6MB. Free memory was 55.2MB in the beginning and 113.0MB in the end (delta: -57.8MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-12-02 07:53:02,651 INFO L158 Benchmark]: Boogie Preprocessor took 25.48ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 110.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:53:02,651 INFO L158 Benchmark]: RCFGBuilder took 255.66ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 98.8MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:53:02,652 INFO L158 Benchmark]: TraceAbstraction took 280.11ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 80.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:53:02,652 INFO L158 Benchmark]: Witness Printer took 3.81ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:53:02,654 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 863.55ms. Allocated memory is still 142.6MB. Free memory was 113.6MB in the beginning and 55.2MB in the end (delta: 58.4MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.47ms. Allocated memory is still 142.6MB. Free memory was 55.2MB in the beginning and 113.0MB in the end (delta: -57.8MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.48ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 110.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 255.66ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 98.8MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 280.11ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 80.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.81ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. 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: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1567, overapproximation of fgets at line 1565. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int badStatic = 0; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_sub_21_bad() [L1561] int data; [L1562] data = 0 [L1564] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=0, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1565] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1567] data = atoi(inputBuffer) [L1574] badStatic = 1 [L1575] CALL badSink(data) [L1551] COND TRUE \read(badStatic) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1554]: 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: 0.2s, 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, 0.0s 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 [2024-12-02 07:53:02,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/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_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1 --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 211f5b0a18e30109e888d9a4f4d46cbe008bcfb572b01ce834f74224b9209b10 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:53:04,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:53:04,617 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-12-02 07:53:04,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:53:04,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:53:04,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-12-02 07:53:04,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:53:04,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:53:04,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:53:04,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:53:04,647 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:53:04,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:53:04,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:53:04,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:53:04,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:53:04,648 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:53:04,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 07:53:04,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:53:04,650 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:53:04,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:53:04,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:53:04,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:53:04,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:53:04,651 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_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1 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 -> 211f5b0a18e30109e888d9a4f4d46cbe008bcfb572b01ce834f74224b9209b10 [2024-12-02 07:53:04,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:53:04,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:53:04,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:53:04,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:53:04,901 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:53:04,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_21_bad.i [2024-12-02 07:53:07,652 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data/5e51aae16/da5925664d6548cfbc6110ce2e339875/FLAGf1481b5ce [2024-12-02 07:53:07,928 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:53:07,928 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_21_bad.i [2024-12-02 07:53:07,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data/5e51aae16/da5925664d6548cfbc6110ce2e339875/FLAGf1481b5ce [2024-12-02 07:53:07,964 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/data/5e51aae16/da5925664d6548cfbc6110ce2e339875 [2024-12-02 07:53:07,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:53:07,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:53:07,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:53:07,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:53:07,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:53:07,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:53:07" (1/1) ... [2024-12-02 07:53:07,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@546bc630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:07, skipping insertion in model container [2024-12-02 07:53:07,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:53:07" (1/1) ... [2024-12-02 07:53:08,010 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:53:08,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:53:08,656 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:53:08,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:53:08,833 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:53:08,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08 WrapperNode [2024-12-02 07:53:08,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:53:08,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:53:08,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:53:08,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:53:08,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,875 INFO L138 Inliner]: procedures = 504, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2024-12-02 07:53:08,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:53:08,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:53:08,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:53:08,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:53:08,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,901 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]. [2024-12-02 07:53:08,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,908 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:53:08,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:53:08,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:53:08,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:53:08,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (1/1) ... [2024-12-02 07:53:08,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:53:08,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:53:08,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:53:08,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:53:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-02 07:53:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-02 07:53:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 07:53:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:53:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:53:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:53:09,079 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:53:09,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:53:09,184 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-12-02 07:53:09,184 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:53:09,193 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:53:09,193 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 07:53:09,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:09 BoogieIcfgContainer [2024-12-02 07:53:09,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:53:09,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:53:09,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:53:09,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:53:09,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:53:07" (1/3) ... [2024-12-02 07:53:09,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3660edbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:53:09, skipping insertion in model container [2024-12-02 07:53:09,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:08" (2/3) ... [2024-12-02 07:53:09,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3660edbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:53:09, skipping insertion in model container [2024-12-02 07:53:09,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:09" (3/3) ... [2024-12-02 07:53:09,203 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_21_bad.i [2024-12-02 07:53:09,217 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:53:09,219 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_21_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-12-02 07:53:09,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:53:09,265 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;@6ca1366d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:53:09,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:53:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 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) [2024-12-02 07:53:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 07:53:09,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:09,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:53:09,273 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-12-02 07:53:09,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2024-12-02 07:53:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:53:09,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130820626] [2024-12-02 07:53:09,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:09,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:53:09,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:53:09,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:53:09,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:53:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:53:09,403 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:53:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:53:09,443 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-02 07:53:09,444 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 07:53:09,445 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-12-02 07:53:09,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-12-02 07:53:09,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:53:09,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:53:09,650 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 07:53:09,666 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 07:53:09,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:53:09 BoogieIcfgContainer [2024-12-02 07:53:09,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 07:53:09,669 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:53:09,669 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:53:09,669 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:53:09,670 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:09" (3/4) ... [2024-12-02 07:53:09,671 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 07:53:09,672 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:53:09,673 INFO L158 Benchmark]: Toolchain (without parser) took 1704.92ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 66.6MB in the beginning and 114.3MB in the end (delta: -47.6MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2024-12-02 07:53:09,673 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:53:09,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 864.44ms. Allocated memory is still 92.3MB. Free memory was 66.6MB in the beginning and 60.7MB in the end (delta: 5.9MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2024-12-02 07:53:09,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.47ms. Allocated memory is still 92.3MB. Free memory was 60.2MB in the beginning and 57.6MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:53:09,674 INFO L158 Benchmark]: Boogie Preprocessor took 39.71ms. Allocated memory is still 92.3MB. Free memory was 57.6MB in the beginning and 55.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:53:09,674 INFO L158 Benchmark]: RCFGBuilder took 277.43ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 42.2MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:53:09,674 INFO L158 Benchmark]: TraceAbstraction took 472.32ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 41.7MB in the beginning and 114.3MB in the end (delta: -72.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:53:09,675 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 151.0MB. Free memory was 114.3MB in the beginning and 114.3MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:53:09,677 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 864.44ms. Allocated memory is still 92.3MB. Free memory was 66.6MB in the beginning and 60.7MB in the end (delta: 5.9MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.47ms. Allocated memory is still 92.3MB. Free memory was 60.2MB in the beginning and 57.6MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.71ms. Allocated memory is still 92.3MB. Free memory was 57.6MB in the beginning and 55.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 277.43ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 42.2MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 472.32ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 41.7MB in the beginning and 114.3MB in the end (delta: -72.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.77ms. Allocated memory is still 151.0MB. Free memory was 114.3MB in the beginning and 114.3MB in the end (delta: 18.4kB). 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: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1567, overapproximation of fgets at line 1565. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int badStatic = 0; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_sub_21_bad() [L1561] int data; [L1562] data = 0 [L1564] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=0, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1565] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1567] data = atoi(inputBuffer) [L1574] badStatic = 1 [L1575] CALL badSink(data) [L1551] COND TRUE \read(badStatic) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1554]: 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: 0.4s, 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=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, 0.0s 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 [2024-12-02 07:53:09,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2d29e3-899c-43ee-9e4e-75e63177ea6f/bin/uautomizer-verify-84ZbGMXZE1/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