./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_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_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/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_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/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_4bb83519-25e5-4093-a42b-d8437e818d96/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 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 00:27:48,494 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 00:27:48,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2024-11-24 00:27:48,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 00:27:48,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 00:27:48,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 00:27:48,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 00:27:48,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 00:27:48,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 00:27:48,661 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 00:27:48,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 00:27:48,663 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 00:27:48,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 00:27:48,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 00:27:48,664 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 00:27:48,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 00:27:48,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-24 00:27:48,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 00:27:48,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 00:27:48,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 00:27:48,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 00:27:48,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 00:27:48,665 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME
[2024-11-24 00:27:48,665 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-24 00:27:48,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-24 00:27:48,665 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 00:27:48,665 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 00:27:48,665 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 00:27:48,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 00:27:48,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:27:48,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 00:27:48,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:27:48,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 00:27:48,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 00:27:48,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:27:48,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 00:27:48,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:27:48,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 00:27:48,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 00:27:48,668 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-24 00:27:48,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 00:27:48,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 00:27:48,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 00:27:48,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 00:27:48,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 00:27:48,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 00:27:48,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 00:27:48,670 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_4bb83519-25e5-4093-a42b-d8437e818d96/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 -> 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1
[2024-11-24 00:27:49,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 00:27:49,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 00:27:49,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 00:27:49,106 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 00:27:49,106 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 00:27:49,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i
[2024-11-24 00:27:52,392 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data/aa988ce61/10928afbe97945b888c7ed7ca5f89ccc/FLAGc7cedb323
[2024-11-24 00:27:52,852 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 00:27:52,853 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i
[2024-11-24 00:27:52,895 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data/aa988ce61/10928afbe97945b888c7ed7ca5f89ccc/FLAGc7cedb323
[2024-11-24 00:27:52,922 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data/aa988ce61/10928afbe97945b888c7ed7ca5f89ccc
[2024-11-24 00:27:52,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 00:27:52,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 00:27:52,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 00:27:52,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 00:27:52,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 00:27:52,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:27:52" (1/1) ...
[2024-11-24 00:27:52,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1acf85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:52, skipping insertion in model container
[2024-11-24 00:27:52,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:27:52" (1/1) ...
[2024-11-24 00:27:53,025 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 00:27:54,174 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:27:54,192 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 00:27:54,318 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:27:54,489 INFO L204 MainTranslator]: Completed translation
[2024-11-24 00:27:54,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54 WrapperNode
[2024-11-24 00:27:54,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 00:27:54,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 00:27:54,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 00:27:54,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 00:27:54,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,543 INFO L138 Inliner]: procedures = 500, calls = 29, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 67
[2024-11-24 00:27:54,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 00:27:54,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 00:27:54,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 00:27:54,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 00:27:54,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,580 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 00:27:54,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,586 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 00:27:54,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 00:27:54,597 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 00:27:54,597 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 00:27:54,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ...
[2024-11-24 00:27:54,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:27:54,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:27:54,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 00:27:54,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 00:27:54,667 INFO L130 BoogieDeclarations]: Found specification of procedure printLine
[2024-11-24 00:27:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine
[2024-11-24 00:27:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 00:27:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 00:27:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 00:27:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 00:27:54,879 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 00:27:54,881 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 00:27:55,035 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live.
[2024-11-24 00:27:55,035 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 00:27:55,047 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 00:27:55,047 INFO L312 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-24 00:27:55,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:27:55 BoogieIcfgContainer
[2024-11-24 00:27:55,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 00:27:55,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 00:27:55,051 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 00:27:55,057 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 00:27:55,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:27:52" (1/3) ...
[2024-11-24 00:27:55,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55559001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:27:55, skipping insertion in model container
[2024-11-24 00:27:55,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (2/3) ...
[2024-11-24 00:27:55,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55559001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:27:55, skipping insertion in model container
[2024-11-24 00:27:55,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:27:55" (3/3) ...
[2024-11-24 00:27:55,061 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_65_bad.i
[2024-11-24 00:27:55,079 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 00:27:55,080 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_65_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations.
[2024-11-24 00:27:55,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 00:27:55,165 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;@696c0403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 00:27:55,165 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-24 00:27:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-24 00:27:55,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-24 00:27:55,177 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:27:55,178 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:27:55,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2024-11-24 00:27:55,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:27:55,185 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times
[2024-11-24 00:27:55,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 00:27:55,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709802830]
[2024-11-24 00:27:55,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:27:55,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 00:27:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-24 00:27:55,389 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-24 00:27:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-24 00:27:55,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-24 00:27:55,481 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-24 00:27:55,483 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2024-11-24 00:27:55,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2024-11-24 00:27:55,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 00:27:55,495 INFO L422 BasicCegarLoop]: Path program histogram: [1]
[2024-11-24 00:27:55,528 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-24 00:27:55,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:27:55 BoogieIcfgContainer
[2024-11-24 00:27:55,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-24 00:27:55,537 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-24 00:27:55,537 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-24 00:27:55,537 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-24 00:27:55,538 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:27:55" (3/4) ...
[2024-11-24 00:27:55,541 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-11-24 00:27:55,542 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-24 00:27:55,543 INFO L158 Benchmark]: Toolchain (without parser) took 2615.06ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 46.0MB in the end (delta: 43.1MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB.
[2024-11-24 00:27:55,544 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:27:55,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1560.02ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 81.2MB in the end (delta: 7.6MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB.
[2024-11-24 00:27:55,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.54ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 78.4MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 00:27:55,546 INFO L158 Benchmark]: Boogie Preprocessor took 51.56ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 76.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:27:55,548 INFO L158 Benchmark]: RCFGBuilder took 451.76ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 64.1MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 00:27:55,548 INFO L158 Benchmark]: TraceAbstraction took 484.52ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 46.0MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 00:27:55,549 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 117.4MB. Free memory is still 46.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:27:55,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 1560.02ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 81.2MB in the end (delta: 7.6MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 52.54ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 78.4MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 51.56ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 76.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 451.76ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 64.1MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 484.52ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 46.0MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Witness Printer took 4.91ms. Allocated memory is still 117.4MB. Free memory is still 46.0MB. 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: 1578]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: overapproximation of atoi at line 1558, overapproximation of fgets at line 1556.
Possible FailurePath:
[L1522] const int GLOBAL_CONST_TRUE = 1;
[L1523] const int GLOBAL_CONST_FALSE = 0;
[L1524] const int GLOBAL_CONST_FIVE = 5;
[L1525] int globalTrue = 1;
[L1526] int globalFalse = 0;
[L1527] int globalFive = 5;
[L1546] int globalArgc = 0;
[L1547] char** globalArgv = ((void *)0);
VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1570] CALL printLine("Calling bad()...")
VAL [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)
[L1570] 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]
[L1571] CALL CWE191_Integer_Underflow__int_fgets_predec_65_bad()
[L1551] int data;
[L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_predec_65b_badSink;
[L1553] data = 0
[L1555] char inputBuffer[(3 * sizeof(data) + 2)] = "";
VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, funcPtr={-1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)
[L1558] data = atoi(inputBuffer)
[L1565] CALL funcPtr(data)
[L1578] --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: 1578]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-11-24 00:27:55,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/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_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/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_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/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_4bb83519-25e5-4093-a42b-d8437e818d96/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 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 00:27:58,881 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 00:27:59,024 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf
[2024-11-24 00:27:59,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 00:27:59,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 00:27:59,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty.
[2024-11-24 00:27:59,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 00:27:59,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 00:27:59,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 00:27:59,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 00:27:59,082 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 00:27:59,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 00:27:59,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 00:27:59,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 00:27:59,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 00:27:59,083 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 00:27:59,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 00:27:59,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-24 00:27:59,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 00:27:59,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 00:27:59,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 00:27:59,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 00:27:59,089 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-24 00:27:59,089 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-24 00:27:59,089 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME
[2024-11-24 00:27:59,090 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-24 00:27:59,090 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-24 00:27:59,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-24 00:27:59,090 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 00:27:59,090 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 00:27:59,090 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 00:27:59,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 00:27:59,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:27:59,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 00:27:59,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:27:59,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 00:27:59,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 00:27:59,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 00:27:59,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 00:27:59,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:27:59,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 00:27:59,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 00:27:59,093 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-24 00:27:59,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 00:27:59,094 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-24 00:27:59,094 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-24 00:27:59,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 00:27:59,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 00:27:59,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 00:27:59,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 00:27:59,095 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_4bb83519-25e5-4093-a42b-d8437e818d96/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 -> 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1
[2024-11-24 00:27:59,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 00:27:59,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 00:27:59,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 00:27:59,531 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 00:27:59,531 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 00:27:59,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i
[2024-11-24 00:28:03,109 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data/234674416/b4b05e227dab460ea92fb5b112b0d691/FLAG3e2a9c5eb
[2024-11-24 00:28:03,627 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 00:28:03,628 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i
[2024-11-24 00:28:03,653 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data/234674416/b4b05e227dab460ea92fb5b112b0d691/FLAG3e2a9c5eb
[2024-11-24 00:28:03,685 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/data/234674416/b4b05e227dab460ea92fb5b112b0d691
[2024-11-24 00:28:03,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 00:28:03,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 00:28:03,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 00:28:03,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 00:28:03,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 00:28:03,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:28:03" (1/1) ...
[2024-11-24 00:28:03,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b83f3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:03, skipping insertion in model container
[2024-11-24 00:28:03,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:28:03" (1/1) ...
[2024-11-24 00:28:03,765 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 00:28:04,978 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:28:05,003 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 00:28:05,150 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 00:28:05,349 INFO L204 MainTranslator]: Completed translation
[2024-11-24 00:28:05,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05 WrapperNode
[2024-11-24 00:28:05,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 00:28:05,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 00:28:05,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 00:28:05,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 00:28:05,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,445 INFO L138 Inliner]: procedures = 505, calls = 29, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 66
[2024-11-24 00:28:05,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 00:28:05,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 00:28:05,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 00:28:05,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 00:28:05,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,502 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 00:28:05,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,522 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 00:28:05,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 00:28:05,548 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 00:28:05,549 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 00:28:05,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (1/1) ...
[2024-11-24 00:28:05,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 00:28:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:28:05,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 00:28:05,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 00:28:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure printLine
[2024-11-24 00:28:05,644 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine
[2024-11-24 00:28:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-24 00:28:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 00:28:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 00:28:05,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 00:28:05,891 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 00:28:05,895 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 00:28:06,071 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live.
[2024-11-24 00:28:06,071 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 00:28:06,087 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 00:28:06,087 INFO L312 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-24 00:28:06,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:28:06 BoogieIcfgContainer
[2024-11-24 00:28:06,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 00:28:06,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 00:28:06,090 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 00:28:06,098 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 00:28:06,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:28:03" (1/3) ...
[2024-11-24 00:28:06,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403ef44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:28:06, skipping insertion in model container
[2024-11-24 00:28:06,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:28:05" (2/3) ...
[2024-11-24 00:28:06,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403ef44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:28:06, skipping insertion in model container
[2024-11-24 00:28:06,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:28:06" (3/3) ...
[2024-11-24 00:28:06,105 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_65_bad.i
[2024-11-24 00:28:06,126 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 00:28:06,128 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_65_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations.
[2024-11-24 00:28:06,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 00:28:06,223 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;@2429a88b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 00:28:06,224 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-24 00:28:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-24 00:28:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-24 00:28:06,238 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-24 00:28:06,239 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 00:28:06,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2024-11-24 00:28:06,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 00:28:06,250 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times
[2024-11-24 00:28:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-24 00:28:06,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031219854]
[2024-11-24 00:28:06,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 00:28:06,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:28:06,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 00:28:06,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 00:28:06,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-24 00:28:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-24 00:28:06,513 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-24 00:28:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-24 00:28:06,599 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace
[2024-11-24 00:28:06,601 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-24 00:28:06,603 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2024-11-24 00:28:06,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2024-11-24 00:28:06,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-24 00:28:06,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 00:28:06,815 INFO L422 BasicCegarLoop]: Path program histogram: [1]
[2024-11-24 00:28:06,839 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-24 00:28:06,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:28:06 BoogieIcfgContainer
[2024-11-24 00:28:06,843 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-24 00:28:06,844 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-24 00:28:06,844 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-24 00:28:06,844 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-24 00:28:06,845 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:28:06" (3/4) ...
[2024-11-24 00:28:06,848 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-11-24 00:28:06,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-24 00:28:06,851 INFO L158 Benchmark]: Toolchain (without parser) took 3160.80ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 78.0MB in the end (delta: 11.1MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB.
[2024-11-24 00:28:06,851 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 83.9MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:28:06,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1659.22ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 77.1MB in the end (delta: 11.7MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB.
[2024-11-24 00:28:06,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.54ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 73.9MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:28:06,853 INFO L158 Benchmark]: Boogie Preprocessor took 99.25ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 71.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:28:06,853 INFO L158 Benchmark]: RCFGBuilder took 539.52ms. Allocated memory is still 117.4MB. Free memory was 71.9MB in the beginning and 58.1MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-24 00:28:06,854 INFO L158 Benchmark]: TraceAbstraction took 753.20ms. Allocated memory is still 117.4MB. Free memory was 57.4MB in the beginning and 78.7MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:28:06,854 INFO L158 Benchmark]: Witness Printer took 5.36ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 78.0MB in the end (delta: 652.1kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 00:28:06,857 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.57ms. Allocated memory is still 83.9MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 1659.22ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 77.1MB in the end (delta: 11.7MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 94.54ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 73.9MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 99.25ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 71.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 539.52ms. Allocated memory is still 117.4MB. Free memory was 71.9MB in the beginning and 58.1MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 753.20ms. Allocated memory is still 117.4MB. Free memory was 57.4MB in the beginning and 78.7MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 5.36ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 78.0MB in the end (delta: 652.1kB). 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: 1578]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: overapproximation of atoi at line 1558, overapproximation of fgets at line 1556.
Possible FailurePath:
[L1522] const int GLOBAL_CONST_TRUE = 1;
[L1523] const int GLOBAL_CONST_FALSE = 0;
[L1524] const int GLOBAL_CONST_FIVE = 5;
[L1525] int globalTrue = 1;
[L1526] int globalFalse = 0;
[L1527] int globalFive = 5;
[L1546] int globalArgc = 0;
[L1547] char** globalArgv = ((void *)0);
VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1570] CALL printLine("Calling bad()...")
VAL [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)
[L1570] 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]
[L1571] CALL CWE191_Integer_Underflow__int_fgets_predec_65_bad()
[L1551] int data;
[L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_predec_65b_badSink;
[L1553] data = 0
[L1555] char inputBuffer[(3 * sizeof(data) + 2)] = "";
VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, funcPtr={-1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)
[L1558] data = atoi(inputBuffer)
[L1565] CALL funcPtr(data)
[L1578] --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: 1578]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-11-24 00:28:06,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb83519-25e5-4093-a42b-d8437e818d96/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