./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i --full-output --architecture 64bit


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


Checking for overflows
Using default analysis
Version 30e01a73
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_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 67ffb06f55f3e3a0d5de3e3e30d88dbb86aea47b00f25ab682eaebca9ddb1d73
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-30e01a7
[2023-11-23 21:19:15,793 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-23 21:19:15,897 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf
[2023-11-23 21:19:15,902 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-23 21:19:15,903 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-23 21:19:15,929 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-23 21:19:15,929 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-23 21:19:15,930 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-23 21:19:15,931 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-23 21:19:15,931 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-23 21:19:15,932 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-11-23 21:19:15,932 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-23 21:19:15,933 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-11-23 21:19:15,933 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-11-23 21:19:15,934 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-11-23 21:19:15,935 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-11-23 21:19:15,935 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-11-23 21:19:15,936 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-11-23 21:19:15,936 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-11-23 21:19:15,937 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-11-23 21:19:15,937 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-11-23 21:19:15,938 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-11-23 21:19:15,938 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-23 21:19:15,939 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-23 21:19:15,939 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-23 21:19:15,940 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-23 21:19:15,940 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-23 21:19:15,941 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-23 21:19:15,941 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-23 21:19:15,942 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-23 21:19:15,942 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-23 21:19:15,943 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-23 21:19:15,943 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-23 21:19:15,944 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-23 21:19:15,944 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-23 21:19:15,944 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-23 21:19:15,945 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:19:15,945 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-23 21:19:15,946 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-23 21:19:15,946 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-23 21:19:15,947 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-11-23 21:19:15,947 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-23 21:19:15,948 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-23 21:19:15,948 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-23 21:19:15,949 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-11-23 21:19:15,949 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-23 21:19:15,949 INFO  L153        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
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_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire
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 -> Taipan
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 -> 67ffb06f55f3e3a0d5de3e3e30d88dbb86aea47b00f25ab682eaebca9ddb1d73
[2023-11-23 21:19:16,293 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-23 21:19:16,329 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-23 21:19:16,332 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-23 21:19:16,335 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-23 21:19:16,336 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-23 21:19:16,338 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i
[2023-11-23 21:19:19,460 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-23 21:19:19,903 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-23 21:19:19,907 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i
[2023-11-23 21:19:19,938 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/data/7b6989c69/c578705865fb4b95b892807356b2c115/FLAG0e6cd2486
[2023-11-23 21:19:19,949 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/data/7b6989c69/c578705865fb4b95b892807356b2c115
[2023-11-23 21:19:19,952 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-23 21:19:19,953 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-23 21:19:19,955 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-23 21:19:19,956 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-23 21:19:19,966 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-23 21:19:19,966 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:19:19" (1/1) ...
[2023-11-23 21:19:19,967 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c91ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:19, skipping insertion in model container
[2023-11-23 21:19:19,968 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:19:19" (1/1) ...
[2023-11-23 21:19:20,059 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-23 21:19:20,428 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-23 21:19:20,943 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:19:20,965 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-23 21:19:21,000 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-23 21:19:21,109 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:19:21,308 WARN  L675               CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:21,308 WARN  L675               CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:21,308 WARN  L675               CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:21,308 WARN  L675               CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:21,309 WARN  L675               CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:21,309 WARN  L675               CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:21,317 INFO  L206         MainTranslator]: Completed translation
[2023-11-23 21:19:21,318 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21 WrapperNode
[2023-11-23 21:19:21,318 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-23 21:19:21,319 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-23 21:19:21,319 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-23 21:19:21,320 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-23 21:19:21,327 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,375 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,418 INFO  L138                Inliner]: procedures = 504, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 59
[2023-11-23 21:19:21,419 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-23 21:19:21,419 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-23 21:19:21,420 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-23 21:19:21,420 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-23 21:19:21,430 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,435 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,439 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,439 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,453 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,455 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,457 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,458 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,462 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-23 21:19:21,463 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-23 21:19:21,463 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-23 21:19:21,463 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-23 21:19:21,464 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (1/1) ...
[2023-11-23 21:19:21,470 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:19:21,492 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 21:19:21,504 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-23 21:19:21,514 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-23 21:19:21,539 INFO  L130     BoogieDeclarations]: Found specification of procedure fgets
[2023-11-23 21:19:21,540 INFO  L130     BoogieDeclarations]: Found specification of procedure printLine
[2023-11-23 21:19:21,540 INFO  L138     BoogieDeclarations]: Found implementation of procedure printLine
[2023-11-23 21:19:21,540 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-23 21:19:21,540 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2023-11-23 21:19:21,540 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-23 21:19:21,540 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-23 21:19:21,541 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-23 21:19:21,541 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-23 21:19:21,541 INFO  L130     BoogieDeclarations]: Found specification of procedure time
[2023-11-23 21:19:21,541 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-23 21:19:21,700 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-23 21:19:21,702 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-23 21:19:21,826 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-23 21:19:21,872 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-23 21:19:21,873 INFO  L309             CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-23 21:19:21,874 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:21 BoogieIcfgContainer
[2023-11-23 21:19:21,875 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-23 21:19:21,877 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-23 21:19:21,878 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-23 21:19:21,881 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-23 21:19:21,881 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:19:19" (1/3) ...
[2023-11-23 21:19:21,882 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201914ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:21, skipping insertion in model container
[2023-11-23 21:19:21,882 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:21" (2/3) ...
[2023-11-23 21:19:21,883 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201914ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:21, skipping insertion in model container
[2023-11-23 21:19:21,883 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:21" (3/3) ...
[2023-11-23 21:19:21,884 INFO  L112   eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_add_54_bad.i
[2023-11-23 21:19:21,905 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-23 21:19:21,905 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-23 21:19:21,955 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-23 21:19:21,964 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=FINITE_AUTOMATA, 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;@68fafae8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 21:19:21,964 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-23 21:19:21,969 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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)
[2023-11-23 21:19:21,977 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2023-11-23 21:19:21,977 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-23 21:19:21,978 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:19:21,978 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-23 21:19:21,982 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:19:21,983 INFO  L85        PathProgramCache]: Analyzing trace with hash 1526179500, now seen corresponding path program 1 times
[2023-11-23 21:19:21,993 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:19:21,994 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82305288]
[2023-11-23 21:19:21,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:19:21,994 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:19:22,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:19:22,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:19:22,640 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:19:22,640 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82305288]
[2023-11-23 21:19:22,641 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82305288] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:19:22,641 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:19:22,641 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-23 21:19:22,643 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251998019]
[2023-11-23 21:19:22,644 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:19:22,648 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-23 21:19:22,649 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:19:22,691 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-23 21:19:22,692 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-23 21:19:22,694 INFO  L87              Difference]: Start difference. First operand  has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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)
[2023-11-23 21:19:22,760 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:19:22,760 INFO  L93              Difference]: Finished difference Result 15 states and 17 transitions.
[2023-11-23 21:19:22,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-23 21:19:22,763 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 8
[2023-11-23 21:19:22,764 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:19:22,770 INFO  L225             Difference]: With dead ends: 15
[2023-11-23 21:19:22,771 INFO  L226             Difference]: Without dead ends: 11
[2023-11-23 21:19:22,774 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-23 21:19:22,777 INFO  L413           NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-23 21:19:22,779 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-23 21:19:22,797 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2023-11-23 21:19:22,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2023-11-23 21:19:22,819 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 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)
[2023-11-23 21:19:22,820 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions.
[2023-11-23 21:19:22,822 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8
[2023-11-23 21:19:22,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:19:22,836 INFO  L495      AbstractCegarLoop]: Abstraction has 11 states and 12 transitions.
[2023-11-23 21:19:22,837 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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)
[2023-11-23 21:19:22,837 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions.
[2023-11-23 21:19:22,838 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-11-23 21:19:22,840 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-23 21:19:22,840 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:19:22,841 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-23 21:19:22,841 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-23 21:19:22,843 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:19:22,843 INFO  L85        PathProgramCache]: Analyzing trace with hash 66924298, now seen corresponding path program 1 times
[2023-11-23 21:19:22,844 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:19:22,844 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331952006]
[2023-11-23 21:19:22,845 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:19:22,845 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:19:22,920 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 21:19:22,920 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-23 21:19:22,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 21:19:22,980 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2023-11-23 21:19:22,980 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-23 21:19:22,983 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2023-11-23 21:19:22,986 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2023-11-23 21:19:22,986 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-23 21:19:22,990 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-23 21:19:23,000 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-23 21:19:23,042 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:19:23 BoogieIcfgContainer
[2023-11-23 21:19:23,043 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-23 21:19:23,044 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-23 21:19:23,044 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-23 21:19:23,044 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-23 21:19:23,045 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:21" (3/4) ...
[2023-11-23 21:19:23,048 INFO  L140         WitnessPrinter]: No result that supports witness generation found
[2023-11-23 21:19:23,050 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-23 21:19:23,050 INFO  L158              Benchmark]: Toolchain (without parser) took 3096.94ms. Allocated memory is still 148.9MB. Free memory was 118.5MB in the beginning and 108.3MB in the end (delta: 10.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB.
[2023-11-23 21:19:23,051 INFO  L158              Benchmark]: CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 121.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:19:23,057 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1362.88ms. Allocated memory is still 148.9MB. Free memory was 118.5MB in the beginning and 107.4MB in the end (delta: 11.1MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB.
[2023-11-23 21:19:23,059 INFO  L158              Benchmark]: Boogie Procedure Inliner took 99.69ms. Allocated memory is still 148.9MB. Free memory was 107.4MB in the beginning and 104.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-23 21:19:23,059 INFO  L158              Benchmark]: Boogie Preprocessor took 42.53ms. Allocated memory is still 148.9MB. Free memory was 104.5MB in the beginning and 103.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:19:23,063 INFO  L158              Benchmark]: RCFGBuilder took 412.34ms. Allocated memory is still 148.9MB. Free memory was 102.4MB in the beginning and 87.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-11-23 21:19:23,063 INFO  L158              Benchmark]: TraceAbstraction took 1165.51ms. Allocated memory is still 148.9MB. Free memory was 86.9MB in the beginning and 108.3MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:19:23,064 INFO  L158              Benchmark]: Witness Printer took 6.21ms. Allocated memory is still 148.9MB. Free memory is still 108.3MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:19:23,070 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 121.8MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 1362.88ms. Allocated memory is still 148.9MB. Free memory was 118.5MB in the beginning and 107.4MB in the end (delta: 11.1MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 99.69ms. Allocated memory is still 148.9MB. Free memory was 107.4MB in the beginning and 104.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 42.53ms. Allocated memory is still 148.9MB. Free memory was 104.5MB in the beginning and 103.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 412.34ms. Allocated memory is still 148.9MB. Free memory was 102.4MB in the beginning and 87.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
 * TraceAbstraction took 1165.51ms. Allocated memory is still 148.9MB. Free memory was 86.9MB in the beginning and 108.3MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB.
 * Witness Printer took 6.21ms. Allocated memory is still 148.9MB. Free memory is still 108.3MB. There was no memory consumed. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - UnprovableResult [Line: 1592]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: overapproximation of atoi at line 1557. 
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);
[L1569]        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)
[L1569]        RET              printLine("Calling bad()...")
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=2147483648, argc=2147483648, argv={2147483651:2147483649}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1570]        CALL             CWE190_Integer_Overflow__int_fgets_add_54_bad()
[L1551]                         int data;
[L1552]                         data = 0
[L1554]                         char inputBuffer[(3 * sizeof(data) + 2)] = "";
[L1555]        COND TRUE, EXPR  fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)
[L1557]        EXPR             data = atoi(inputBuffer)
[L1554]                         char inputBuffer[(3 * sizeof(data) + 2)] = "";
[L1553-L1563]                   {
        char inputBuffer[(3 * sizeof(data) + 2)] = "";
        if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0))
        {
            data = atoi(inputBuffer);
        }
        else
        {
            printLine("fgets() failed.");
        }
    }
[L1564]        CALL             CWE190_Integer_Overflow__int_fgets_add_54b_badSink(data)
[L1577]        CALL             CWE190_Integer_Overflow__int_fgets_add_54c_badSink(data)
[L1582]        CALL             CWE190_Integer_Overflow__int_fgets_add_54d_badSink(data)
[L1587]        CALL             CWE190_Integer_Overflow__int_fgets_add_54e_badSink(data)
[L1592]                         data + 1
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=2147483647, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]

  - UnprovableResult [Line: 1592]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.5s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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
[2023-11-23 21:19:23,111 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 67ffb06f55f3e3a0d5de3e3e30d88dbb86aea47b00f25ab682eaebca9ddb1d73
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-30e01a7
[2023-11-23 21:19:25,876 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-23 21:19:26,006 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf
[2023-11-23 21:19:26,016 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-23 21:19:26,017 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-23 21:19:26,058 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-23 21:19:26,058 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-23 21:19:26,059 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-23 21:19:26,060 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-23 21:19:26,065 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-23 21:19:26,066 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-11-23 21:19:26,066 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-23 21:19:26,067 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-11-23 21:19:26,069 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-11-23 21:19:26,069 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-11-23 21:19:26,070 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-11-23 21:19:26,071 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-23 21:19:26,071 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-23 21:19:26,072 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-23 21:19:26,073 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-23 21:19:26,074 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-23 21:19:26,074 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-23 21:19:26,075 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-11-23 21:19:26,075 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-11-23 21:19:26,075 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-23 21:19:26,076 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-23 21:19:26,076 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-23 21:19:26,077 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-23 21:19:26,077 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-23 21:19:26,078 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-23 21:19:26,079 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-23 21:19:26,079 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-23 21:19:26,080 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-23 21:19:26,080 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:19:26,081 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-23 21:19:26,081 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-23 21:19:26,081 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-23 21:19:26,081 INFO  L153        SettingsManager]:  * Trace refinement strategy=WALRUS
[2023-11-23 21:19:26,082 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2023-11-23 21:19:26,083 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-23 21:19:26,083 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-23 21:19:26,084 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-11-23 21:19:26,084 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-23 21:19:26,084 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
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_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire
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 -> Taipan
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 -> 67ffb06f55f3e3a0d5de3e3e30d88dbb86aea47b00f25ab682eaebca9ddb1d73
[2023-11-23 21:19:26,501 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-23 21:19:26,532 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-23 21:19:26,534 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-23 21:19:26,536 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-23 21:19:26,537 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-23 21:19:26,538 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i
[2023-11-23 21:19:29,625 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-23 21:19:30,125 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-23 21:19:30,125 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i
[2023-11-23 21:19:30,162 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/data/fff901463/1204f8d35eae472d9903765b942ddc90/FLAGa454b49a7
[2023-11-23 21:19:30,182 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/data/fff901463/1204f8d35eae472d9903765b942ddc90
[2023-11-23 21:19:30,187 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-23 21:19:30,189 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-23 21:19:30,192 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-23 21:19:30,193 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-23 21:19:30,198 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-23 21:19:30,199 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:19:30" (1/1) ...
[2023-11-23 21:19:30,200 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76834a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:30, skipping insertion in model container
[2023-11-23 21:19:30,201 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:19:30" (1/1) ...
[2023-11-23 21:19:30,288 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-23 21:19:30,774 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-23 21:19:31,389 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:19:31,412 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-23 21:19:31,455 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-23 21:19:31,575 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:19:31,740 WARN  L675               CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:31,740 WARN  L675               CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:31,741 WARN  L675               CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:31,741 WARN  L675               CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:31,741 WARN  L675               CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:31,741 WARN  L675               CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:19:31,749 INFO  L206         MainTranslator]: Completed translation
[2023-11-23 21:19:31,749 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31 WrapperNode
[2023-11-23 21:19:31,749 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-23 21:19:31,751 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-23 21:19:31,751 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-23 21:19:31,751 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-23 21:19:31,757 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,796 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,827 INFO  L138                Inliner]: procedures = 509, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 58
[2023-11-23 21:19:31,828 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-23 21:19:31,828 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-23 21:19:31,829 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-23 21:19:31,829 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-23 21:19:31,841 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,841 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,863 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,863 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,873 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,883 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,886 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,888 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,912 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-23 21:19:31,913 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-23 21:19:31,913 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-23 21:19:31,913 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-23 21:19:31,925 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (1/1) ...
[2023-11-23 21:19:31,930 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:19:31,940 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 21:19:31,952 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-23 21:19:31,955 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-23 21:19:31,985 INFO  L130     BoogieDeclarations]: Found specification of procedure fgets
[2023-11-23 21:19:31,985 INFO  L130     BoogieDeclarations]: Found specification of procedure printLine
[2023-11-23 21:19:31,986 INFO  L138     BoogieDeclarations]: Found implementation of procedure printLine
[2023-11-23 21:19:31,986 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-23 21:19:31,986 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-11-23 21:19:31,986 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-23 21:19:31,986 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-23 21:19:31,986 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-23 21:19:31,987 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-23 21:19:31,987 INFO  L130     BoogieDeclarations]: Found specification of procedure time
[2023-11-23 21:19:31,988 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1
[2023-11-23 21:19:32,163 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-23 21:19:32,165 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-23 21:19:32,377 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-23 21:19:32,415 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-23 21:19:32,415 INFO  L309             CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-23 21:19:32,417 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:32 BoogieIcfgContainer
[2023-11-23 21:19:32,417 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-23 21:19:32,420 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-23 21:19:32,420 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-23 21:19:32,424 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-23 21:19:32,424 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:19:30" (1/3) ...
[2023-11-23 21:19:32,425 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0cc0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:32, skipping insertion in model container
[2023-11-23 21:19:32,425 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:31" (2/3) ...
[2023-11-23 21:19:32,426 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0cc0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:32, skipping insertion in model container
[2023-11-23 21:19:32,426 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:32" (3/3) ...
[2023-11-23 21:19:32,427 INFO  L112   eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_add_54_bad.i
[2023-11-23 21:19:32,448 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-23 21:19:32,448 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-23 21:19:32,501 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-23 21:19:32,509 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=FINITE_AUTOMATA, 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;@1045d30a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 21:19:32,509 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-23 21:19:32,516 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 17 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 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)
[2023-11-23 21:19:32,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-23 21:19:32,528 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-23 21:19:32,528 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:19:32,529 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-23 21:19:32,537 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:19:32,538 INFO  L85        PathProgramCache]: Analyzing trace with hash 1070117411, now seen corresponding path program 1 times
[2023-11-23 21:19:32,561 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-11-23 21:19:32,561 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57309090]
[2023-11-23 21:19:32,562 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:19:32,562 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
[2023-11-23 21:19:32,563 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/mathsat
[2023-11-23 21:19:32,568 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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)
[2023-11-23 21:19:32,607 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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
[2023-11-23 21:19:32,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:19:32,802 INFO  L262         TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-11-23 21:19:32,807 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-23 21:19:32,836 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:19:32,837 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-23 21:19:32,838 INFO  L136   FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-11-23 21:19:32,838 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57309090]
[2023-11-23 21:19:32,839 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [57309090] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:19:32,839 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:19:32,840 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-23 21:19:32,842 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92270694]
[2023-11-23 21:19:32,843 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:19:32,848 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-23 21:19:32,848 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-11-23 21:19:32,890 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-23 21:19:32,891 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-23 21:19:32,894 INFO  L87              Difference]: Start difference. First operand  has 17 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 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, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 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)
[2023-11-23 21:19:32,925 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:19:32,925 INFO  L93              Difference]: Finished difference Result 17 states and 20 transitions.
[2023-11-23 21:19:32,927 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-23 21:19:32,928 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10
[2023-11-23 21:19:32,929 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:19:32,937 INFO  L225             Difference]: With dead ends: 17
[2023-11-23 21:19:32,937 INFO  L226             Difference]: Without dead ends: 13
[2023-11-23 21:19:32,940 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-23 21:19:32,944 INFO  L413           NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-23 21:19:32,946 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-23 21:19:32,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2023-11-23 21:19:32,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2023-11-23 21:19:32,984 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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)
[2023-11-23 21:19:32,985 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions.
[2023-11-23 21:19:32,987 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10
[2023-11-23 21:19:32,988 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:19:32,988 INFO  L495      AbstractCegarLoop]: Abstraction has 13 states and 15 transitions.
[2023-11-23 21:19:32,989 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 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)
[2023-11-23 21:19:32,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions.
[2023-11-23 21:19:32,992 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-11-23 21:19:32,992 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-23 21:19:32,993 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:19:33,003 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0
[2023-11-23 21:19:33,196 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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
[2023-11-23 21:19:33,197 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-23 21:19:33,198 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:19:33,198 INFO  L85        PathProgramCache]: Analyzing trace with hash -1186098573, now seen corresponding path program 1 times
[2023-11-23 21:19:33,199 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-11-23 21:19:33,199 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470434597]
[2023-11-23 21:19:33,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:19:33,201 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
[2023-11-23 21:19:33,201 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/mathsat
[2023-11-23 21:19:33,205 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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)
[2023-11-23 21:19:33,240 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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
[2023-11-23 21:19:33,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 21:19:33,380 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-23 21:19:33,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-23 21:19:33,466 INFO  L130   FreeRefinementEngine]: Strategy WALRUS found a feasible trace
[2023-11-23 21:19:33,469 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-23 21:19:33,475 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2023-11-23 21:19:33,477 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2023-11-23 21:19:33,488 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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
[2023-11-23 21:19:33,678 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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
[2023-11-23 21:19:33,681 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-23 21:19:33,684 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-23 21:19:33,712 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:19:33 BoogieIcfgContainer
[2023-11-23 21:19:33,713 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-23 21:19:33,713 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-23 21:19:33,714 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-23 21:19:33,714 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-23 21:19:33,715 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:32" (3/4) ...
[2023-11-23 21:19:33,717 INFO  L140         WitnessPrinter]: No result that supports witness generation found
[2023-11-23 21:19:33,718 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-23 21:19:33,719 INFO  L158              Benchmark]: Toolchain (without parser) took 3530.00ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 60.9MB in the beginning and 56.5MB in the end (delta: 4.4MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB.
[2023-11-23 21:19:33,720 INFO  L158              Benchmark]: CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory was 45.4MB in the beginning and 45.4MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:19:33,720 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1557.32ms. Allocated memory is still 88.1MB. Free memory was 60.7MB in the beginning and 39.9MB in the end (delta: 20.8MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB.
[2023-11-23 21:19:33,721 INFO  L158              Benchmark]: Boogie Procedure Inliner took 77.32ms. Allocated memory is still 88.1MB. Free memory was 39.9MB in the beginning and 36.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-23 21:19:33,722 INFO  L158              Benchmark]: Boogie Preprocessor took 83.77ms. Allocated memory is still 88.1MB. Free memory was 36.6MB in the beginning and 60.9MB in the end (delta: -24.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB.
[2023-11-23 21:19:33,722 INFO  L158              Benchmark]: RCFGBuilder took 504.66ms. Allocated memory is still 88.1MB. Free memory was 60.9MB in the beginning and 44.6MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-11-23 21:19:33,723 INFO  L158              Benchmark]: TraceAbstraction took 1293.04ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 43.7MB in the beginning and 57.1MB in the end (delta: -13.4MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB.
[2023-11-23 21:19:33,724 INFO  L158              Benchmark]: Witness Printer took 4.88ms. Allocated memory is still 107.0MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:19:33,727 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory was 45.4MB in the beginning and 45.4MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 1557.32ms. Allocated memory is still 88.1MB. Free memory was 60.7MB in the beginning and 39.9MB in the end (delta: 20.8MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 77.32ms. Allocated memory is still 88.1MB. Free memory was 39.9MB in the beginning and 36.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 83.77ms. Allocated memory is still 88.1MB. Free memory was 36.6MB in the beginning and 60.9MB in the end (delta: -24.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB.
 * RCFGBuilder took 504.66ms. Allocated memory is still 88.1MB. Free memory was 60.9MB in the beginning and 44.6MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
 * TraceAbstraction took 1293.04ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 43.7MB in the beginning and 57.1MB in the end (delta: -13.4MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB.
 * Witness Printer took 4.88ms. Allocated memory is still 107.0MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - UnprovableResult [Line: 1592]: Unable to prove that integer overflow can never occur
    Unable to prove that integer overflow can never occur
 Reason: overapproximation of atoi at line 1557. 
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);
[L1569]        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)
[L1569]        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}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1570]        CALL             CWE190_Integer_Overflow__int_fgets_add_54_bad()
[L1551]                         int data;
[L1552]                         data = 0
[L1554]                         char inputBuffer[(3 * sizeof(data) + 2)] = "";
[L1555]        COND TRUE, EXPR  fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)
[L1557]        EXPR             data = atoi(inputBuffer)
[L1554]                         char inputBuffer[(3 * sizeof(data) + 2)] = "";
[L1553-L1563]                   {
        char inputBuffer[(3 * sizeof(data) + 2)] = "";
        if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0))
        {
            data = atoi(inputBuffer);
        }
        else
        {
            printLine("fgets() failed.");
        }
    }
[L1564]        CALL             CWE190_Integer_Overflow__int_fgets_add_54b_badSink(data)
[L1577]        CALL             CWE190_Integer_Overflow__int_fgets_add_54c_badSink(data)
[L1582]        CALL             CWE190_Integer_Overflow__int_fgets_add_54d_badSink(data)
[L1587]        CALL             CWE190_Integer_Overflow__int_fgets_add_54e_badSink(data)
[L1592]                         data + 1
               VAL              [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=2147483647, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]

  - UnprovableResult [Line: 1592]: 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, 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, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 70 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
[2023-11-23 21:19:33,764 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f88dd780-5998-438f-b372-df382df6d7c5/bin/utaipan-verify-mE87zJ7Ire/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