./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i --full-output --architecture 64bit


--------------------------------------------------------------------------------


Checking for overflows
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu --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 02f0093e8608d74f9c40a937fb4441e30f3654c13a2096bc11c8fc7cd6eaa3c8
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:44:52,017 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:44:52,173 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2023-11-19 07:44:52,181 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:44:52,182 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:44:52,220 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:44:52,221 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:44:52,222 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:44:52,223 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:44:52,227 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:44:52,229 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:44:52,229 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-19 07:44:52,230 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-19 07:44:52,231 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:44:52,232 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:44:52,232 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-19 07:44:52,233 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-19 07:44:52,233 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:44:52,233 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:44:52,234 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:44:52,234 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-19 07:44:52,235 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-19 07:44:52,235 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-19 07:44:52,236 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-19 07:44:52,236 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:44:52,237 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-19 07:44:52,237 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-19 07:44:52,238 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:44:52,238 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:44:52,238 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:44:52,240 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:44:52,240 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-19 07:44:52,240 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:44:52,240 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:44:52,240 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:44:52,241 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:44:52,241 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:44:52,241 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:44:52,241 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu
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 -> 02f0093e8608d74f9c40a937fb4441e30f3654c13a2096bc11c8fc7cd6eaa3c8
[2023-11-19 07:44:52,536 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:44:52,568 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:44:52,571 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:44:52,572 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-19 07:44:52,573 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-19 07:44:52,574 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i
[2023-11-19 07:44:55,553 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:44:56,126 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-19 07:44:56,127 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i
[2023-11-19 07:44:56,163 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/data/ff0eed72c/ba61cda5a6f742c3989b9083c5dc62fc/FLAG7256ce313
[2023-11-19 07:44:56,184 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/data/ff0eed72c/ba61cda5a6f742c3989b9083c5dc62fc
[2023-11-19 07:44:56,189 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:44:56,192 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:44:56,198 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:44:56,198 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:44:56,205 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:44:56,205 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:56" (1/1) ...
[2023-11-19 07:44:56,207 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d939743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:56, skipping insertion in model container
[2023-11-19 07:44:56,207 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:56" (1/1) ...
[2023-11-19 07:44:56,287 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:44:56,772 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:44:57,424 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:44:57,436 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-19 07:44:57,458 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:44:57,567 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:44:57,757 WARN  L675               CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:44:57,781 WARN  L675               CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:44:57,781 WARN  L675               CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:44:57,781 WARN  L675               CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:44:57,781 WARN  L675               CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:44:57,781 WARN  L675               CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:44:57,789 INFO  L206         MainTranslator]: Completed translation
[2023-11-19 07:44:57,790 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57 WrapperNode
[2023-11-19 07:44:57,790 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:44:57,791 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:44:57,791 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:44:57,792 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:44:57,833 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,871 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,898 INFO  L138                Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57
[2023-11-19 07:44:57,899 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:44:57,900 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:44:57,900 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:44:57,900 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:44:57,910 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,910 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,914 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,914 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,921 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,923 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,926 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,927 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,931 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:44:57,932 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:44:57,932 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:44:57,932 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:44:57,933 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ...
[2023-11-19 07:44:57,940 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:44:57,957 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:44:57,973 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:44:57,991 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:44:58,017 INFO  L130     BoogieDeclarations]: Found specification of procedure fgets
[2023-11-19 07:44:58,017 INFO  L130     BoogieDeclarations]: Found specification of procedure printLine
[2023-11-19 07:44:58,018 INFO  L138     BoogieDeclarations]: Found implementation of procedure printLine
[2023-11-19 07:44:58,018 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:44:58,018 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2023-11-19 07:44:58,018 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:44:58,018 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:44:58,018 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:44:58,021 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:44:58,021 INFO  L130     BoogieDeclarations]: Found specification of procedure time
[2023-11-19 07:44:58,022 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:44:58,172 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-19 07:44:58,174 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:44:58,299 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-19 07:44:58,306 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:44:58,306 INFO  L302             CfgBuilder]: Removed 2 assume(true) statements.
[2023-11-19 07:44:58,310 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:58 BoogieIcfgContainer
[2023-11-19 07:44:58,310 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:44:58,312 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:44:58,312 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:44:58,316 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:44:58,316 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:56" (1/3) ...
[2023-11-19 07:44:58,317 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757b6a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:58, skipping insertion in model container
[2023-11-19 07:44:58,317 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (2/3) ...
[2023-11-19 07:44:58,317 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757b6a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:58, skipping insertion in model container
[2023-11-19 07:44:58,318 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:58" (3/3) ...
[2023-11-19 07:44:58,319 INFO  L112   eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i
[2023-11-19 07:44:58,339 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:44:58,339 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-19 07:44:58,388 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:44:58,394 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@6d94aa24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:44:58,395 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-19 07:44:58,399 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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)
[2023-11-19 07:44:58,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-11-19 07:44:58,406 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:44:58,407 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:44:58,408 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-19 07:44:58,413 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:44:58,413 INFO  L85        PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times
[2023-11-19 07:44:58,423 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:44:58,423 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759875925]
[2023-11-19 07:44:58,423 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:44:58,424 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:44:58,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:44:58,618 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:44:58,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:44:58,659 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:44:58,664 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:44:58,664 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759875925]
[2023-11-19 07:44:58,665 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759875925] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:44:58,665 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:44:58,666 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:44:58,667 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726348143]
[2023-11-19 07:44:58,668 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:44:58,673 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:44:58,673 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:44:58,716 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:44:58,717 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:44:58,719 INFO  L87              Difference]: Start difference. First operand  has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 07:44:58,741 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:44:58,741 INFO  L93              Difference]: Finished difference Result 40 states and 46 transitions.
[2023-11-19 07:44:58,742 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-19 07:44:58,743 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2023-11-19 07:44:58,744 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:44:58,751 INFO  L225             Difference]: With dead ends: 40
[2023-11-19 07:44:58,751 INFO  L226             Difference]: Without dead ends: 17
[2023-11-19 07:44:58,755 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:44:58,758 INFO  L413           NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:44:58,759 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:44:58,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2023-11-19 07:44:58,793 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2023-11-19 07:44:58,794 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-11-19 07:44:58,795 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2023-11-19 07:44:58,797 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11
[2023-11-19 07:44:58,799 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:44:58,799 INFO  L495      AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2023-11-19 07:44:58,799 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 07:44:58,800 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2023-11-19 07:44:58,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-11-19 07:44:58,801 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:44:58,801 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:44:58,801 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:44:58,802 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-19 07:44:58,803 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:44:58,803 INFO  L85        PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times
[2023-11-19 07:44:58,803 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:44:58,805 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394651184]
[2023-11-19 07:44:58,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:44:58,806 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:44:58,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:44:58,885 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:44:58,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:44:58,953 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:44:58,954 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:44:58,956 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2023-11-19 07:44:58,957 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2023-11-19 07:44:58,958 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:44:58,961 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-19 07:44:58,965 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 07:44:58,986 WARN  L1572  BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated
[2023-11-19 07:44:58,995 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:44:58 BoogieIcfgContainer
[2023-11-19 07:44:58,995 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 07:44:58,996 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 07:44:58,996 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-19 07:44:58,996 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-19 07:44:58,997 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:58" (3/4) ...
[2023-11-19 07:44:58,999 INFO  L140         WitnessPrinter]: No result that supports witness generation found
[2023-11-19 07:44:59,000 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 07:44:59,001 INFO  L158              Benchmark]: Toolchain (without parser) took 2808.71ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 72.4MB in the end (delta: 48.4MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB.
[2023-11-19 07:44:59,001 INFO  L158              Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:44:59,002 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1592.76ms. Allocated memory is still 153.1MB. Free memory was 120.3MB in the beginning and 120.7MB in the end (delta: -367.0kB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB.
[2023-11-19 07:44:59,003 INFO  L158              Benchmark]: Boogie Procedure Inliner took 107.96ms. Allocated memory is still 153.1MB. Free memory was 120.7MB in the beginning and 117.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:44:59,003 INFO  L158              Benchmark]: Boogie Preprocessor took 31.26ms. Allocated memory is still 153.1MB. Free memory was 117.8MB in the beginning and 115.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:44:59,004 INFO  L158              Benchmark]: RCFGBuilder took 378.18ms. Allocated memory is still 153.1MB. Free memory was 115.7MB in the beginning and 103.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2023-11-19 07:44:59,004 INFO  L158              Benchmark]: TraceAbstraction took 683.11ms. Allocated memory is still 153.1MB. Free memory was 102.6MB in the beginning and 73.2MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB.
[2023-11-19 07:44:59,005 INFO  L158              Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 153.1MB. Free memory is still 72.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:44:59,008 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 1592.76ms. Allocated memory is still 153.1MB. Free memory was 120.3MB in the beginning and 120.7MB in the end (delta: -367.0kB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 107.96ms. Allocated memory is still 153.1MB. Free memory was 120.7MB in the beginning and 117.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 31.26ms. Allocated memory is still 153.1MB. Free memory was 117.8MB in the beginning and 115.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 378.18ms. Allocated memory is still 153.1MB. Free memory was 115.7MB in the beginning and 103.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
 * TraceAbstraction took 683.11ms. Allocated memory is still 153.1MB. Free memory was 102.6MB in the beginning and 73.2MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB.
 * Witness Printer took 4.35ms. Allocated memory is still 153.1MB. Free memory is still 72.4MB. There was no memory consumed. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated
  - GenericResult: Unfinished Backtranslation
    The program execution was not completely translated back.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: overapproximation of atoi at line 1558. 
Possible FailurePath: 
[L1522]                         const int GLOBAL_CONST_TRUE = 1;
[L1523]                         const int GLOBAL_CONST_FALSE = 0;
[L1524]                         const int GLOBAL_CONST_FIVE = 5;
[L1525]                         int globalTrue = 1;
[L1526]                         int globalFalse = 0;
[L1527]                         int globalFive = 5;
[L1546]                         int globalArgc = 0;
[L1547]                         char** globalArgv = ((void *)0);
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1578]        CALL             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, line={4:0}]
[L1414]        COND TRUE        line != ((void *)0)
[L1578]        RET              printLine("Calling bad()...")
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741828, argc=1073741828, argv={1073741825:1073741829}, argv={1073741825:1073741829}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1579]        CALL             CWE191_Integer_Underflow__int_fgets_postdec_03_bad()
[L1550]                         int data;
[L1551]                         data = 0
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1555]                         char inputBuffer[(3 * sizeof(data) + 2)] = "";
[L1556]        COND TRUE, EXPR  fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)
[L1558]        EXPR             data = atoi(inputBuffer)
[L1555]                         char inputBuffer[(3 * sizeof(data) + 2)] = "";
[L1554-L1564]                   {
            char inputBuffer[(3 * sizeof(data) + 2)] = "";
            if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0))
            {
                data = atoi(inputBuffer);
            }
            else
            {
                printLine("fgets() failed.");
            }
        }
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1569]                         data--
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]

  - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 27 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-11-19 07:44:59,049 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis

### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu --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 02f0093e8608d74f9c40a937fb4441e30f3654c13a2096bc11c8fc7cd6eaa3c8
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:45:01,777 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:45:01,899 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf
[2023-11-19 07:45:01,909 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:45:01,910 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:45:01,911 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty.
[2023-11-19 07:45:01,956 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:45:01,957 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:45:01,958 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:45:01,963 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:45:01,964 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:45:01,964 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:45:01,965 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-19 07:45:01,966 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-19 07:45:01,967 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:45:01,968 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:45:01,968 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-19 07:45:01,969 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:45:01,969 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:45:01,970 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:45:01,970 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:45:01,971 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-11-19 07:45:01,971 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-19 07:45:01,972 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-19 07:45:01,972 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-19 07:45:01,973 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-19 07:45:01,973 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-19 07:45:01,973 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:45:01,974 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-19 07:45:01,974 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-19 07:45:01,975 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:45:01,976 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:45:01,976 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:45:01,976 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:45:01,977 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-11-19 07:45:01,977 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2023-11-19 07:45:01,977 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:45:01,977 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:45:01,977 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:45:01,978 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:45:01,979 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-11-19 07:45:01,979 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:45:01,979 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu
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 -> 02f0093e8608d74f9c40a937fb4441e30f3654c13a2096bc11c8fc7cd6eaa3c8
[2023-11-19 07:45:02,410 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:45:02,441 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:45:02,445 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:45:02,446 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-19 07:45:02,447 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-19 07:45:02,448 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i
[2023-11-19 07:45:05,606 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:45:06,083 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-19 07:45:06,085 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i
[2023-11-19 07:45:06,110 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/data/8ee835fab/55a4abbc69ff42c3a636beaa7922251f/FLAG151220849
[2023-11-19 07:45:06,126 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/data/8ee835fab/55a4abbc69ff42c3a636beaa7922251f
[2023-11-19 07:45:06,128 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:45:06,130 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:45:06,131 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:45:06,131 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:45:06,172 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:45:06,173 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:06" (1/1) ...
[2023-11-19 07:45:06,174 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792639de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06, skipping insertion in model container
[2023-11-19 07:45:06,174 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:06" (1/1) ...
[2023-11-19 07:45:06,257 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:45:06,747 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:45:07,543 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:45:07,560 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-19 07:45:07,591 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:45:07,672 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:45:07,872 WARN  L675               CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:45:07,872 WARN  L675               CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:45:07,873 WARN  L675               CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:45:07,873 WARN  L675               CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:45:07,874 WARN  L675               CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:45:07,874 WARN  L675               CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:45:07,882 INFO  L206         MainTranslator]: Completed translation
[2023-11-19 07:45:07,882 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07 WrapperNode
[2023-11-19 07:45:07,884 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:45:07,886 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:45:07,886 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:45:07,886 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:45:07,892 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:07,945 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:07,981 INFO  L138                Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56
[2023-11-19 07:45:07,982 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:45:07,983 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:45:07,983 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:45:07,983 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:45:07,994 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:07,994 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:08,017 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:08,018 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:08,028 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:08,030 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:08,049 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:08,051 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:08,056 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:45:08,057 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:45:08,057 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:45:08,057 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:45:08,058 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (1/1) ...
[2023-11-19 07:45:08,080 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:45:08,093 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:45:08,115 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:45:08,136 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:45:08,164 INFO  L130     BoogieDeclarations]: Found specification of procedure fgets
[2023-11-19 07:45:08,164 INFO  L130     BoogieDeclarations]: Found specification of procedure printLine
[2023-11-19 07:45:08,165 INFO  L138     BoogieDeclarations]: Found implementation of procedure printLine
[2023-11-19 07:45:08,165 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:45:08,165 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-11-19 07:45:08,165 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:45:08,165 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:45:08,165 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:45:08,165 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:45:08,166 INFO  L130     BoogieDeclarations]: Found specification of procedure time
[2023-11-19 07:45:08,166 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1
[2023-11-19 07:45:08,390 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-19 07:45:08,392 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:45:08,530 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-19 07:45:08,537 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:45:08,538 INFO  L302             CfgBuilder]: Removed 2 assume(true) statements.
[2023-11-19 07:45:08,541 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:08 BoogieIcfgContainer
[2023-11-19 07:45:08,541 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:45:08,543 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:45:08,543 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:45:08,547 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:45:08,547 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:06" (1/3) ...
[2023-11-19 07:45:08,548 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e77807d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:08, skipping insertion in model container
[2023-11-19 07:45:08,548 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:07" (2/3) ...
[2023-11-19 07:45:08,548 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e77807d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:08, skipping insertion in model container
[2023-11-19 07:45:08,549 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:08" (3/3) ...
[2023-11-19 07:45:08,550 INFO  L112   eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i
[2023-11-19 07:45:08,569 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:45:08,569 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-19 07:45:08,616 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:45:08,623 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@5ab86667, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:45:08,624 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-19 07:45:08,628 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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)
[2023-11-19 07:45:08,635 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-11-19 07:45:08,635 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:45:08,636 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:45:08,636 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-19 07:45:08,641 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:45:08,642 INFO  L85        PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times
[2023-11-19 07:45:08,655 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:45:08,656 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581451507]
[2023-11-19 07:45:08,656 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:45:08,656 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:45:08,657 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:45:08,660 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:45:08,698 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-11-19 07:45:08,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:45:08,803 INFO  L262         TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-19 07:45:08,808 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:45:08,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:45:08,837 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:45:08,838 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:45:08,838 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581451507]
[2023-11-19 07:45:08,839 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581451507] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:45:08,839 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:45:08,840 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:45:08,841 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874664478]
[2023-11-19 07:45:08,842 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:45:08,846 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:45:08,846 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:45:08,880 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:45:08,880 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:45:08,882 INFO  L87              Difference]: Start difference. First operand  has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 07:45:08,902 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:45:08,902 INFO  L93              Difference]: Finished difference Result 39 states and 46 transitions.
[2023-11-19 07:45:08,904 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-19 07:45:08,905 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2023-11-19 07:45:08,905 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:45:08,930 INFO  L225             Difference]: With dead ends: 39
[2023-11-19 07:45:08,930 INFO  L226             Difference]: Without dead ends: 15
[2023-11-19 07:45:08,934 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:45:08,938 INFO  L413           NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:45:08,939 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:45:08,956 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2023-11-19 07:45:08,970 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2023-11-19 07:45:08,972 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-11-19 07:45:08,973 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions.
[2023-11-19 07:45:08,974 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11
[2023-11-19 07:45:08,975 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:45:08,976 INFO  L495      AbstractCegarLoop]: Abstraction has 15 states and 17 transitions.
[2023-11-19 07:45:08,976 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 07:45:08,976 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions.
[2023-11-19 07:45:08,977 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-11-19 07:45:08,978 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 07:45:08,978 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:45:08,986 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-11-19 07:45:09,181 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:45:09,182 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-19 07:45:09,183 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:45:09,183 INFO  L85        PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times
[2023-11-19 07:45:09,184 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:45:09,184 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548192591]
[2023-11-19 07:45:09,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:45:09,184 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:45:09,185 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:45:09,186 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:45:09,194 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-11-19 07:45:09,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:45:09,298 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:45:09,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:45:09,366 INFO  L130   FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2023-11-19 07:45:09,366 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:45:09,368 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2023-11-19 07:45:09,371 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2023-11-19 07:45:09,381 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:45:09,575 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:45:09,579 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-19 07:45:09,582 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 07:45:09,604 WARN  L1572  BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated
[2023-11-19 07:45:09,611 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:45:09 BoogieIcfgContainer
[2023-11-19 07:45:09,612 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 07:45:09,612 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 07:45:09,613 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-19 07:45:09,613 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-19 07:45:09,613 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:08" (3/4) ...
[2023-11-19 07:45:09,616 INFO  L140         WitnessPrinter]: No result that supports witness generation found
[2023-11-19 07:45:09,617 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 07:45:09,618 INFO  L158              Benchmark]: Toolchain (without parser) took 3487.98ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 32.7MB in the beginning and 56.1MB in the end (delta: -23.4MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB.
[2023-11-19 07:45:09,618 INFO  L158              Benchmark]: CDTParser took 0.25ms. Allocated memory is still 69.2MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:45:09,619 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1753.59ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 32.5MB in the beginning and 51.4MB in the end (delta: -18.9MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB.
[2023-11-19 07:45:09,620 INFO  L158              Benchmark]: Boogie Procedure Inliner took 96.20ms. Allocated memory is still 98.6MB. Free memory was 51.4MB in the beginning and 48.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-19 07:45:09,620 INFO  L158              Benchmark]: Boogie Preprocessor took 73.70ms. Allocated memory is still 98.6MB. Free memory was 48.1MB in the beginning and 46.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:45:09,621 INFO  L158              Benchmark]: RCFGBuilder took 484.31ms. Allocated memory is still 98.6MB. Free memory was 46.1MB in the beginning and 59.1MB in the end (delta: -13.1MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB.
[2023-11-19 07:45:09,622 INFO  L158              Benchmark]: TraceAbstraction took 1068.60ms. Allocated memory is still 98.6MB. Free memory was 58.6MB in the beginning and 56.1MB in the end (delta: 2.5MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB.
[2023-11-19 07:45:09,622 INFO  L158              Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 98.6MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:45:09,625 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25ms. Allocated memory is still 69.2MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 1753.59ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 32.5MB in the beginning and 51.4MB in the end (delta: -18.9MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 96.20ms. Allocated memory is still 98.6MB. Free memory was 51.4MB in the beginning and 48.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 73.70ms. Allocated memory is still 98.6MB. Free memory was 48.1MB in the beginning and 46.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 484.31ms. Allocated memory is still 98.6MB. Free memory was 46.1MB in the beginning and 59.1MB in the end (delta: -13.1MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB.
 * TraceAbstraction took 1068.60ms. Allocated memory is still 98.6MB. Free memory was 58.6MB in the beginning and 56.1MB in the end (delta: 2.5MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB.
 * Witness Printer took 4.72ms. Allocated memory is still 98.6MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
  - GenericResult: Unfinished Backtranslation
    Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated
  - GenericResult: Unfinished Backtranslation
    The program execution was not completely translated back.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: overapproximation of atoi at line 1558. 
Possible FailurePath: 
[L1522]                         const int GLOBAL_CONST_TRUE = 1;
[L1523]                         const int GLOBAL_CONST_FALSE = 0;
[L1524]                         const int GLOBAL_CONST_FIVE = 5;
[L1525]                         int globalTrue = 1;
[L1526]                         int globalFalse = 0;
[L1527]                         int globalFive = 5;
[L1546]                         int globalArgc = 0;
[L1547]                         char** globalArgv = ((void *)0);
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1578]        CALL             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, line={4:0}]
[L1414]        COND TRUE        line != ((void *)0)
[L1578]        RET              printLine("Calling bad()...")
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1579]        CALL             CWE191_Integer_Underflow__int_fgets_postdec_03_bad()
[L1550]                         int data;
[L1551]                         data = 0
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1555]                         char inputBuffer[(3 * sizeof(data) + 2)] = "";
[L1556]        COND TRUE, EXPR  fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)
[L1558]        EXPR             data = atoi(inputBuffer)
[L1555]                         char inputBuffer[(3 * sizeof(data) + 2)] = "";
[L1554-L1564]                   {
            char inputBuffer[(3 * sizeof(data) + 2)] = "";
            if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0))
            {
                data = atoi(inputBuffer);
            }
            else
            {
                printLine("fgets() failed.");
            }
        }
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1569]                         data--
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]

  - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 26 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-11-19 07:45:09,662 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f6f964-7dd2-4b45-b780-1131c86b4236/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
UNKNOWN: Overapproximated counterexample