./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_66_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_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/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_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/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_935171d1-3b67-4c6f-a125-c15013bea793/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 bdb3f1d928f38d633659ac00e7313dc56276d592e1902c594e25eae6faa15a05
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 23:07:56,760 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 23:07:56,855 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2024-11-23 23:07:56,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 23:07:56,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 23:07:56,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 23:07:56,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 23:07:56,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 23:07:56,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 23:07:56,894 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 23:07:56,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 23:07:56,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 23:07:56,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 23:07:56,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 23:07:56,895 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 23:07:56,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 23:07:56,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-23 23:07:56,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-23 23:07:56,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 23:07:56,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 23:07:56,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 23:07:56,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 23:07:56,896 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME
[2024-11-23 23:07:56,896 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-23 23:07:56,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-23 23:07:56,897 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 23:07:56,897 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 23:07:56,897 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 23:07:56,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:07:56,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:07:56,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:07:56,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:07:56,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 23:07:56,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:07:56,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 23:07:56,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 23:07:56,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 23:07:56,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 23:07:56,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 23:07:56,899 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_935171d1-3b67-4c6f-a125-c15013bea793/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 -> bdb3f1d928f38d633659ac00e7313dc56276d592e1902c594e25eae6faa15a05
[2024-11-23 23:07:57,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 23:07:57,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 23:07:57,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 23:07:57,252 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 23:07:57,252 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 23:07:57,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i
[2024-11-23 23:08:00,249 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data/6988350f9/525e864f4ddf4cc1955f971eb4c0e85d/FLAGf1148b56a
[2024-11-23 23:08:00,693 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 23:08:00,694 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i
[2024-11-23 23:08:00,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data/6988350f9/525e864f4ddf4cc1955f971eb4c0e85d/FLAGf1148b56a
[2024-11-23 23:08:00,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data/6988350f9/525e864f4ddf4cc1955f971eb4c0e85d
[2024-11-23 23:08:00,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 23:08:00,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 23:08:00,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 23:08:00,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 23:08:00,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 23:08:00,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:08:00" (1/1) ...
[2024-11-23 23:08:00,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a6da80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:00, skipping insertion in model container
[2024-11-23 23:08:00,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:08:00" (1/1) ...
[2024-11-23 23:08:00,894 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 23:08:01,894 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:08:01,904 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 23:08:02,032 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:08:02,200 INFO L204 MainTranslator]: Completed translation
[2024-11-23 23:08:02,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02 WrapperNode
[2024-11-23 23:08:02,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 23:08:02,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 23:08:02,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 23:08:02,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 23:08:02,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,248 INFO L138 Inliner]: procedures = 499, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70
[2024-11-23 23:08:02,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 23:08:02,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 23:08:02,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 23:08:02,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 23:08:02,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,273 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 1 writes are split as follows [0, 1].
[2024-11-23 23:08:02,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,280 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 23:08:02,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 23:08:02,288 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 23:08:02,289 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 23:08:02,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (1/1) ...
[2024-11-23 23:08:02,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:08:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:08:02,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 23:08:02,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 23:08:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure printLine
[2024-11-23 23:08:02,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine
[2024-11-23 23:08:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-23 23:08:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-23 23:08:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-23 23:08:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 23:08:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 23:08:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 23:08:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-23 23:08:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-23 23:08:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-23 23:08:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 23:08:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-23 23:08:02,522 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 23:08:02,523 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 23:08:02,665 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live.
[2024-11-23 23:08:02,665 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 23:08:02,674 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 23:08:02,675 INFO L312 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-23 23:08:02,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:08:02 BoogieIcfgContainer
[2024-11-23 23:08:02,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 23:08:02,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 23:08:02,678 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 23:08:02,682 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 23:08:02,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:08:00" (1/3) ...
[2024-11-23 23:08:02,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fd2489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:08:02, skipping insertion in model container
[2024-11-23 23:08:02,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:02" (2/3) ...
[2024-11-23 23:08:02,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fd2489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:08:02, skipping insertion in model container
[2024-11-23 23:08:02,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:08:02" (3/3) ...
[2024-11-23 23:08:02,685 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i
[2024-11-23 23:08:02,699 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 23:08:02,700 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations.
[2024-11-23 23:08:02,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 23:08:02,765 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;@85054f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 23:08:02,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-23 23:08:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-23 23:08:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-23 23:08:02,775 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:08:02,776 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:08:02,776 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2024-11-23 23:08:02,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:08:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times
[2024-11-23 23:08:02,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 23:08:02,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632699090]
[2024-11-23 23:08:02,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:08:02,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 23:08:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:08:02,976 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-23 23:08:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:08:03,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-23 23:08:03,048 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-23 23:08:03,049 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2024-11-23 23:08:03,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2024-11-23 23:08:03,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-23 23:08:03,055 INFO L422 BasicCegarLoop]: Path program histogram: [1]
[2024-11-23 23:08:03,074 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-23 23:08:03,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:08:03 BoogieIcfgContainer
[2024-11-23 23:08:03,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-23 23:08:03,077 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-23 23:08:03,077 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-23 23:08:03,077 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-23 23:08:03,078 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:08:02" (3/4) ...
[2024-11-23 23:08:03,080 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-11-23 23:08:03,081 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-23 23:08:03,082 INFO L158 Benchmark]: Toolchain (without parser) took 2259.09ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 42.1MB in the end (delta: 48.2MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB.
[2024-11-23 23:08:03,082 INFO L158 Benchmark]: CDTParser took 1.57ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:08:03,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1377.85ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 80.1MB in the end (delta: 10.3MB). Peak memory consumption was 66.5MB. Max. memory is 16.1GB.
[2024-11-23 23:08:03,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.07ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 77.5MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-23 23:08:03,083 INFO L158 Benchmark]: Boogie Preprocessor took 39.00ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 75.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:08:03,084 INFO L158 Benchmark]: RCFGBuilder took 387.26ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 62.5MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-23 23:08:03,084 INFO L158 Benchmark]: TraceAbstraction took 398.89ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 42.7MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-23 23:08:03,084 INFO L158 Benchmark]: Witness Printer took 4.17ms. Allocated memory is still 117.4MB. Free memory is still 42.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:08:03,086 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.57ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 1377.85ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 80.1MB in the end (delta: 10.3MB). Peak memory consumption was 66.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 45.07ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 77.5MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 39.00ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 75.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 387.26ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 62.5MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 398.89ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 42.7MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Witness Printer took 4.17ms. Allocated memory is still 117.4MB. Free memory is still 42.1MB. 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: 1580]: 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]
[L1571] 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)
[L1571] 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]
[L1572] CALL CWE191_Integer_Underflow__int_fgets_postdec_66_bad()
[L1551] int data;
[L1552] int dataArray[5];
[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, dataArray={14:0}, 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] dataArray[2] = data
[L1566] CALL CWE191_Integer_Underflow__int_fgets_postdec_66b_badSink(dataArray)
[L1578] EXPR dataArray[2]
[L1578] int data = dataArray[2];
[L1580] 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: 1580]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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
[2024-11-23 23:08:03,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/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_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/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_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/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_935171d1-3b67-4c6f-a125-c15013bea793/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 bdb3f1d928f38d633659ac00e7313dc56276d592e1902c594e25eae6faa15a05
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 23:08:05,758 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-23 23:08:05,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf
[2024-11-23 23:08:05,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 23:08:05,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 23:08:05,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty.
[2024-11-23 23:08:05,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 23:08:05,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 23:08:05,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 23:08:05,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 23:08:05,925 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-23 23:08:05,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 23:08:05,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 23:08:05,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 23:08:05,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-23 23:08:05,926 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-23 23:08:05,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 23:08:05,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-23 23:08:05,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-23 23:08:05,927 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 23:08:05,928 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-23 23:08:05,928 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 23:08:05,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:08:05,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:08:05,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:08:05,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:08:05,928 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 23:08:05,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-23 23:08:05,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 23:08:05,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-23 23:08:05,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:08:05,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 23:08:05,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 23:08:05,929 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-23 23:08:05,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 23:08:05,929 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-11-23 23:08:05,929 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-23 23:08:05,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 23:08:05,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 23:08:05,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 23:08:05,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 23:08:05,930 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_935171d1-3b67-4c6f-a125-c15013bea793/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 -> bdb3f1d928f38d633659ac00e7313dc56276d592e1902c594e25eae6faa15a05
[2024-11-23 23:08:06,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 23:08:06,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 23:08:06,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 23:08:06,296 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-23 23:08:06,296 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-23 23:08:06,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i
[2024-11-23 23:08:09,272 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data/3f93b11bb/891f28d0decd4340bca719aaf773703b/FLAGdf793ce46
[2024-11-23 23:08:09,766 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-23 23:08:09,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i
[2024-11-23 23:08:09,796 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data/3f93b11bb/891f28d0decd4340bca719aaf773703b/FLAGdf793ce46
[2024-11-23 23:08:09,810 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/data/3f93b11bb/891f28d0decd4340bca719aaf773703b
[2024-11-23 23:08:09,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 23:08:09,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 23:08:09,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 23:08:09,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 23:08:09,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 23:08:09,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:08:09" (1/1) ...
[2024-11-23 23:08:09,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e92749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:09, skipping insertion in model container
[2024-11-23 23:08:09,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:08:09" (1/1) ...
[2024-11-23 23:08:09,867 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-23 23:08:10,977 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:08:10,993 INFO L200 MainTranslator]: Completed pre-run
[2024-11-23 23:08:11,120 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-23 23:08:11,278 INFO L204 MainTranslator]: Completed translation
[2024-11-23 23:08:11,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11 WrapperNode
[2024-11-23 23:08:11,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 23:08:11,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 23:08:11,280 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 23:08:11,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 23:08:11,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,338 INFO L138 Inliner]: procedures = 504, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69
[2024-11-23 23:08:11,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 23:08:11,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 23:08:11,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 23:08:11,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 23:08:11,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,378 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 1 writes are split as follows [0, 1].
[2024-11-23 23:08:11,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,399 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,413 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 23:08:11,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 23:08:11,421 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 23:08:11,421 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-23 23:08:11,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (1/1) ...
[2024-11-23 23:08:11,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 23:08:11,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:08:11,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 23:08:11,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 23:08:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure printLine
[2024-11-23 23:08:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine
[2024-11-23 23:08:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-23 23:08:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-23 23:08:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-23 23:08:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 23:08:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 23:08:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 23:08:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0
[2024-11-23 23:08:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1
[2024-11-23 23:08:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-23 23:08:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0
[2024-11-23 23:08:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1
[2024-11-23 23:08:11,667 INFO L234 CfgBuilder]: Building ICFG
[2024-11-23 23:08:11,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 23:08:11,862 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live.
[2024-11-23 23:08:11,862 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-23 23:08:11,871 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 23:08:11,871 INFO L312 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-23 23:08:11,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:08:11 BoogieIcfgContainer
[2024-11-23 23:08:11,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 23:08:11,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 23:08:11,875 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 23:08:11,881 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-23 23:08:11,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:08:09" (1/3) ...
[2024-11-23 23:08:11,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c7da3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:08:11, skipping insertion in model container
[2024-11-23 23:08:11,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:08:11" (2/3) ...
[2024-11-23 23:08:11,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c7da3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:08:11, skipping insertion in model container
[2024-11-23 23:08:11,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:08:11" (3/3) ...
[2024-11-23 23:08:11,883 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i
[2024-11-23 23:08:11,900 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 23:08:11,901 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_66_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations.
[2024-11-23 23:08:11,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 23:08:11,984 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;@449b2b5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 23:08:11,985 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-11-23 23:08:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-23 23:08:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-23 23:08:11,997 INFO L210 NwaCegarLoop]: Found error trace
[2024-11-23 23:08:11,997 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 23:08:11,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2024-11-23 23:08:12,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 23:08:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times
[2024-11-23 23:08:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-23 23:08:12,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213457290]
[2024-11-23 23:08:12,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 23:08:12,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:08:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 23:08:12,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 23:08:12,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 23:08:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:08:12,237 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-23 23:08:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-23 23:08:12,322 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace
[2024-11-23 23:08:12,323 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-23 23:08:12,325 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2024-11-23 23:08:12,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2024-11-23 23:08:12,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-23 23:08:12,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 23:08:12,533 INFO L422 BasicCegarLoop]: Path program histogram: [1]
[2024-11-23 23:08:12,554 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-23 23:08:12,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:08:12 BoogieIcfgContainer
[2024-11-23 23:08:12,561 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-23 23:08:12,562 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-23 23:08:12,562 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-23 23:08:12,562 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-23 23:08:12,563 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:08:11" (3/4) ...
[2024-11-23 23:08:12,565 INFO L149 WitnessPrinter]: No result that supports witness generation found
[2024-11-23 23:08:12,568 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-23 23:08:12,569 INFO L158 Benchmark]: Toolchain (without parser) took 2754.56ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 55.4MB in the beginning and 46.1MB in the end (delta: 9.3MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB.
[2024-11-23 23:08:12,570 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 83.9MB. Free memory was 63.6MB in the beginning and 63.6MB in the end (delta: 18.8kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:08:12,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1463.23ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 55.2MB in the beginning and 85.0MB in the end (delta: -29.8MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB.
[2024-11-23 23:08:12,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.37ms. Allocated memory is still 125.8MB. Free memory was 85.0MB in the beginning and 82.0MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:08:12,582 INFO L158 Benchmark]: Boogie Preprocessor took 80.93ms. Allocated memory is still 125.8MB. Free memory was 82.0MB in the beginning and 79.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:08:12,583 INFO L158 Benchmark]: RCFGBuilder took 451.07ms. Allocated memory is still 125.8MB. Free memory was 79.8MB in the beginning and 65.0MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-23 23:08:12,583 INFO L158 Benchmark]: TraceAbstraction took 686.43ms. Allocated memory is still 125.8MB. Free memory was 64.6MB in the beginning and 46.1MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-23 23:08:12,583 INFO L158 Benchmark]: Witness Printer took 6.02ms. Allocated memory is still 125.8MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-23 23:08:12,586 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.45ms. Allocated memory is still 83.9MB. Free memory was 63.6MB in the beginning and 63.6MB in the end (delta: 18.8kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 1463.23ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 55.2MB in the beginning and 85.0MB in the end (delta: -29.8MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 59.37ms. Allocated memory is still 125.8MB. Free memory was 85.0MB in the beginning and 82.0MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 80.93ms. Allocated memory is still 125.8MB. Free memory was 82.0MB in the beginning and 79.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 451.07ms. Allocated memory is still 125.8MB. Free memory was 79.8MB in the beginning and 65.0MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 686.43ms. Allocated memory is still 125.8MB. Free memory was 64.6MB in the beginning and 46.1MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Witness Printer took 6.02ms. Allocated memory is still 125.8MB. Free memory is still 46.1MB. 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: 1580]: 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]
[L1571] 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)
[L1571] 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]
[L1572] CALL CWE191_Integer_Underflow__int_fgets_postdec_66_bad()
[L1551] int data;
[L1552] int dataArray[5];
[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, dataArray={5:0}, 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] dataArray[2] = data
[L1566] CALL CWE191_Integer_Underflow__int_fgets_postdec_66b_badSink(dataArray)
[L1578] EXPR dataArray[2]
[L1578] int data = dataArray[2];
[L1580] 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: 1580]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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
[2024-11-23 23:08:12,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935171d1-3b67-4c6f-a125-c15013bea793/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