./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_18_good.i --full-output --architecture 64bit


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


Checking for overflows
Using default analysis
Version 30e01a73
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/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_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_18_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/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_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/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 c6ca409289d292f371a3f6f14c8d6e6b8b567cf9400c71836e3e274db2ae105b
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-30e01a7
[2023-11-23 21:30:14,386 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-23 21:30:14,488 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf
[2023-11-23 21:30:14,495 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-23 21:30:14,495 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-23 21:30:14,538 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-23 21:30:14,538 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-23 21:30:14,539 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-23 21:30:14,540 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-23 21:30:14,546 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-23 21:30:14,546 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-11-23 21:30:14,547 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-23 21:30:14,547 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-11-23 21:30:14,549 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-11-23 21:30:14,550 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-11-23 21:30:14,551 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-11-23 21:30:14,551 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-11-23 21:30:14,552 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-11-23 21:30:14,552 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-11-23 21:30:14,553 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-11-23 21:30:14,553 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-11-23 21:30:14,554 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-11-23 21:30:14,555 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-23 21:30:14,556 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-23 21:30:14,556 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-23 21:30:14,557 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-23 21:30:14,557 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-23 21:30:14,558 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-23 21:30:14,558 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-23 21:30:14,559 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-23 21:30:14,560 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-23 21:30:14,560 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-23 21:30:14,561 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-23 21:30:14,561 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-23 21:30:14,561 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-23 21:30:14,562 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-23 21:30:14,562 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:30:14,562 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-23 21:30:14,563 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-23 21:30:14,563 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-23 21:30:14,563 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-11-23 21:30:14,564 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-23 21:30:14,564 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-23 21:30:14,564 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-23 21:30:14,565 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-11-23 21:30:14,565 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-23 21:30:14,566 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_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/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_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/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 -> c6ca409289d292f371a3f6f14c8d6e6b8b567cf9400c71836e3e274db2ae105b
[2023-11-23 21:30:14,846 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-23 21:30:14,887 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-23 21:30:14,890 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-23 21:30:14,892 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-23 21:30:14,893 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-23 21:30:14,895 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_18_good.i
[2023-11-23 21:30:18,114 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-23 21:30:18,579 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-23 21:30:18,579 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_18_good.i
[2023-11-23 21:30:18,617 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/data/b2fcc9be8/392876c1b6c545139783a12b5b53076b/FLAG366f83ab8
[2023-11-23 21:30:18,633 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/data/b2fcc9be8/392876c1b6c545139783a12b5b53076b
[2023-11-23 21:30:18,636 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-23 21:30:18,644 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-23 21:30:18,647 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-23 21:30:18,648 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-23 21:30:18,654 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-23 21:30:18,655 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:18" (1/1) ...
[2023-11-23 21:30:18,656 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4f2950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:18, skipping insertion in model container
[2023-11-23 21:30:18,656 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:18" (1/1) ...
[2023-11-23 21:30:18,733 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-23 21:30:19,205 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-23 21:30:19,951 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:30:19,972 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-23 21:30:20,049 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-23 21:30:20,145 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:30:20,261 WARN  L675               CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:30:20,261 WARN  L675               CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:30:20,261 WARN  L675               CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:30:20,262 WARN  L675               CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:30:20,262 WARN  L675               CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:30:20,262 WARN  L675               CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler.
[2023-11-23 21:30:20,271 INFO  L206         MainTranslator]: Completed translation
[2023-11-23 21:30:20,271 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20 WrapperNode
[2023-11-23 21:30:20,271 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-23 21:30:20,273 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-23 21:30:20,273 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-23 21:30:20,273 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-23 21:30:20,282 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,319 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,346 INFO  L138                Inliner]: procedures = 502, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76
[2023-11-23 21:30:20,346 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-23 21:30:20,347 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-23 21:30:20,347 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-23 21:30:20,348 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-23 21:30:20,360 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,360 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,364 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,364 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,372 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,384 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,386 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,389 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,392 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-23 21:30:20,393 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-23 21:30:20,393 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-23 21:30:20,394 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-23 21:30:20,395 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (1/1) ...
[2023-11-23 21:30:20,416 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:30:20,432 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 21:30:20,445 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-23 21:30:20,480 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-23 21:30:20,496 INFO  L130     BoogieDeclarations]: Found specification of procedure printIntLine
[2023-11-23 21:30:20,497 INFO  L138     BoogieDeclarations]: Found implementation of procedure printIntLine
[2023-11-23 21:30:20,498 INFO  L130     BoogieDeclarations]: Found specification of procedure fgets
[2023-11-23 21:30:20,498 INFO  L130     BoogieDeclarations]: Found specification of procedure printLine
[2023-11-23 21:30:20,498 INFO  L138     BoogieDeclarations]: Found implementation of procedure printLine
[2023-11-23 21:30:20,498 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-23 21:30:20,498 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2023-11-23 21:30:20,499 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-23 21:30:20,499 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-23 21:30:20,499 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-23 21:30:20,499 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-23 21:30:20,501 INFO  L130     BoogieDeclarations]: Found specification of procedure time
[2023-11-23 21:30:20,501 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-23 21:30:20,720 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-23 21:30:20,723 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-23 21:30:20,957 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-23 21:30:21,026 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-23 21:30:21,027 INFO  L309             CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-23 21:30:21,029 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:21 BoogieIcfgContainer
[2023-11-23 21:30:21,030 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-23 21:30:21,033 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-23 21:30:21,034 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-23 21:30:21,037 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-23 21:30:21,038 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:18" (1/3) ...
[2023-11-23 21:30:21,039 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766d7c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:21, skipping insertion in model container
[2023-11-23 21:30:21,039 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:20" (2/3) ...
[2023-11-23 21:30:21,041 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766d7c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:21, skipping insertion in model container
[2023-11-23 21:30:21,041 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:21" (3/3) ...
[2023-11-23 21:30:21,045 INFO  L112   eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_postinc_18_good.i
[2023-11-23 21:30:21,067 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-23 21:30:21,068 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations.
[2023-11-23 21:30:21,132 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-23 21:30:21,141 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;@9fa4405, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 21:30:21,142 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2023-11-23 21:30:21,146 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 28 states, 15 states have (on average 1.4) internal successors, (21), 21 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-11-23 21:30:21,156 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-11-23 21:30:21,156 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-23 21:30:21,157 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:30:21,158 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2023-11-23 21:30:21,167 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:30:21,167 INFO  L85        PathProgramCache]: Analyzing trace with hash 1174650459, now seen corresponding path program 1 times
[2023-11-23 21:30:21,180 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:30:21,181 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170802517]
[2023-11-23 21:30:21,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:30:21,182 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:30:21,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:30:21,710 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 21:30:21,712 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:30:21,712 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170802517]
[2023-11-23 21:30:21,713 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170802517] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:30:21,714 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:30:21,714 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-23 21:30:21,716 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277743780]
[2023-11-23 21:30:21,717 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:30:21,721 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-23 21:30:21,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:30:21,771 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-23 21:30:21,772 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-23 21:30:21,774 INFO  L87              Difference]: Start difference. First operand  has 28 states, 15 states have (on average 1.4) internal successors, (21), 21 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 21:30:21,886 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:30:21,886 INFO  L93              Difference]: Finished difference Result 28 states and 33 transitions.
[2023-11-23 21:30:21,888 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-23 21:30:21,889 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 9
[2023-11-23 21:30:21,890 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:30:21,898 INFO  L225             Difference]: With dead ends: 28
[2023-11-23 21:30:21,898 INFO  L226             Difference]: Without dead ends: 22
[2023-11-23 21:30:21,902 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 21:30:21,907 INFO  L413           NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-23 21:30:21,909 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 53 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-23 21:30:21,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2023-11-23 21:30:21,948 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2023-11-23 21:30:21,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-11-23 21:30:21,952 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions.
[2023-11-23 21:30:21,954 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9
[2023-11-23 21:30:21,955 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:30:21,955 INFO  L495      AbstractCegarLoop]: Abstraction has 22 states and 25 transitions.
[2023-11-23 21:30:21,956 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 21:30:21,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions.
[2023-11-23 21:30:21,959 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-23 21:30:21,960 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-23 21:30:21,960 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:30:21,960 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-23 21:30:21,961 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2023-11-23 21:30:21,961 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:30:21,962 INFO  L85        PathProgramCache]: Analyzing trace with hash 2054425923, now seen corresponding path program 1 times
[2023-11-23 21:30:21,962 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:30:21,963 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558102941]
[2023-11-23 21:30:21,963 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:30:21,963 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:30:22,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:30:22,123 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 21:30:22,123 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:30:22,124 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558102941]
[2023-11-23 21:30:22,124 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558102941] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:30:22,125 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:30:22,126 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 21:30:22,126 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458577744]
[2023-11-23 21:30:22,126 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:30:22,128 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 21:30:22,129 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:30:22,130 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 21:30:22,133 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 21:30:22,134 INFO  L87              Difference]: Start difference. First operand 22 states and 25 transitions. Second operand  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 21:30:22,168 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:30:22,168 INFO  L93              Difference]: Finished difference Result 22 states and 25 transitions.
[2023-11-23 21:30:22,169 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-23 21:30:22,169 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 21:30:22,170 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:30:22,170 INFO  L225             Difference]: With dead ends: 22
[2023-11-23 21:30:22,171 INFO  L226             Difference]: Without dead ends: 21
[2023-11-23 21:30:22,171 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 21:30:22,174 INFO  L413           NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-23 21:30:22,175 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-23 21:30:22,178 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2023-11-23 21:30:22,184 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2023-11-23 21:30:22,184 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 16 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-11-23 21:30:22,186 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions.
[2023-11-23 21:30:22,186 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10
[2023-11-23 21:30:22,188 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:30:22,188 INFO  L495      AbstractCegarLoop]: Abstraction has 21 states and 24 transitions.
[2023-11-23 21:30:22,188 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 21:30:22,188 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions.
[2023-11-23 21:30:22,189 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-11-23 21:30:22,190 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-23 21:30:22,190 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:30:22,190 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-23 21:30:22,191 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2023-11-23 21:30:22,202 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:30:22,202 INFO  L85        PathProgramCache]: Analyzing trace with hash 381645672, now seen corresponding path program 1 times
[2023-11-23 21:30:22,203 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:30:22,203 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606084475]
[2023-11-23 21:30:22,204 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:30:22,204 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:30:22,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:30:22,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-23 21:30:22,323 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:30:22,323 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606084475]
[2023-11-23 21:30:22,323 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606084475] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:30:22,323 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:30:22,324 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 21:30:22,324 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215516528]
[2023-11-23 21:30:22,324 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:30:22,324 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 21:30:22,325 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:30:22,325 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 21:30:22,325 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 21:30:22,326 INFO  L87              Difference]: Start difference. First operand 21 states and 24 transitions. Second operand  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-11-23 21:30:22,342 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:30:22,342 INFO  L93              Difference]: Finished difference Result 21 states and 24 transitions.
[2023-11-23 21:30:22,343 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-23 21:30:22,343 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13
[2023-11-23 21:30:22,343 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:30:22,344 INFO  L225             Difference]: With dead ends: 21
[2023-11-23 21:30:22,344 INFO  L226             Difference]: Without dead ends: 0
[2023-11-23 21:30:22,344 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 21:30:22,346 INFO  L413           NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-23 21:30:22,346 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-23 21:30:22,347 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-11-23 21:30:22,347 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-11-23 21:30:22,347 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:30:22,348 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-11-23 21:30:22,348 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13
[2023-11-23 21:30:22,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:30:22,348 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-11-23 21:30:22,348 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-11-23 21:30:22,348 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-11-23 21:30:22,349 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2023-11-23 21:30:22,351 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining)
[2023-11-23 21:30:22,352 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining)
[2023-11-23 21:30:22,352 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining)
[2023-11-23 21:30:22,352 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining)
[2023-11-23 21:30:22,353 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-23 21:30:22,355 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-11-23 21:30:22,373 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(lines 1412 1418) the Hoare annotation is: true
[2023-11-23 21:30:22,373 INFO  L899   garLoopResultBuilder]: For program point printLineEXIT(lines 1412 1418) no Hoare annotation was computed.
[2023-11-23 21:30:22,374 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(lines 1426 1429) the Hoare annotation is: true
[2023-11-23 21:30:22,374 INFO  L899   garLoopResultBuilder]: For program point printIntLineEXIT(lines 1426 1429) no Hoare annotation was computed.
[2023-11-23 21:30:22,374 INFO  L899   garLoopResultBuilder]: For program point L1569(line 1569) no Hoare annotation was computed.
[2023-11-23 21:30:22,374 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1569) no Hoare annotation was computed.
[2023-11-23 21:30:22,374 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-11-23 21:30:22,374 INFO  L899   garLoopResultBuilder]: For program point L1569-1(line 1569) no Hoare annotation was computed.
[2023-11-23 21:30:22,375 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1588) no Hoare annotation was computed.
[2023-11-23 21:30:22,375 INFO  L902   garLoopResultBuilder]: At program point L1590(line 1590) the Hoare annotation is: true
[2023-11-23 21:30:22,375 INFO  L899   garLoopResultBuilder]: For program point L1590-1(line 1590) no Hoare annotation was computed.
[2023-11-23 21:30:22,375 INFO  L899   garLoopResultBuilder]: For program point L1588(line 1588) no Hoare annotation was computed.
[2023-11-23 21:30:22,375 INFO  L899   garLoopResultBuilder]: For program point L1588-1(line 1588) no Hoare annotation was computed.
[2023-11-23 21:30:22,375 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-11-23 21:30:22,376 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##5(lines 1567 1576) no Hoare annotation was computed.
[2023-11-23 21:30:22,376 INFO  L902   garLoopResultBuilder]: At program point L1603(line 1603) the Hoare annotation is: true
[2023-11-23 21:30:22,376 INFO  L899   garLoopResultBuilder]: For program point L1603-1(line 1603) no Hoare annotation was computed.
[2023-11-23 21:30:22,376 INFO  L902   garLoopResultBuilder]: At program point L1601(line 1601) the Hoare annotation is: true
[2023-11-23 21:30:22,376 INFO  L899   garLoopResultBuilder]: For program point L1601-1(line 1601) no Hoare annotation was computed.
[2023-11-23 21:30:22,376 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1569) no Hoare annotation was computed.
[2023-11-23 21:30:22,377 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1588) no Hoare annotation was computed.
[2023-11-23 21:30:22,377 INFO  L895   garLoopResultBuilder]: At program point L1562(line 1562) the Hoare annotation is: (<= 0 (+ |ULTIMATE.start_goodB2G_~data~0#1| 2147483648))
[2023-11-23 21:30:22,377 INFO  L899   garLoopResultBuilder]: For program point L1562-1(lines 1556 1563) no Hoare annotation was computed.
[2023-11-23 21:30:22,377 INFO  L899   garLoopResultBuilder]: For program point L1556(lines 1556 1563) no Hoare annotation was computed.
[2023-11-23 21:30:22,377 INFO  L895   garLoopResultBuilder]: At program point L1575(line 1575) the Hoare annotation is: (<= 0 (+ |ULTIMATE.start_goodB2G_~data~0#1| 2147483648))
[2023-11-23 21:30:22,378 INFO  L899   garLoopResultBuilder]: For program point L1575-1(lines 1548 1577) no Hoare annotation was computed.
[2023-11-23 21:30:22,378 INFO  L895   garLoopResultBuilder]: At program point L1571(line 1571) the Hoare annotation is: (<= 0 (+ |ULTIMATE.start_goodB2G_~data~0#1| 2147483648))
[2023-11-23 21:30:22,378 INFO  L899   garLoopResultBuilder]: For program point L1571-1(line 1571) no Hoare annotation was computed.
[2023-11-23 21:30:22,381 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-11-23 21:30:22,384 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-23 21:30:22,389 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:30:22 BoogieIcfgContainer
[2023-11-23 21:30:22,389 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-23 21:30:22,389 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-23 21:30:22,389 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-23 21:30:22,390 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-23 21:30:22,390 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:21" (3/4) ...
[2023-11-23 21:30:22,392 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2023-11-23 21:30:22,396 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure printLine
[2023-11-23 21:30:22,396 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine
[2023-11-23 21:30:22,401 INFO  L943   BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges
[2023-11-23 21:30:22,401 INFO  L943   BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges
[2023-11-23 21:30:22,402 INFO  L943   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-11-23 21:30:22,402 INFO  L943   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-11-23 21:30:22,495 INFO  L149         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/witness.graphml
[2023-11-23 21:30:22,496 INFO  L149         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/witness.yml
[2023-11-23 21:30:22,496 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-23 21:30:22,497 INFO  L158              Benchmark]: Toolchain (without parser) took 3859.47ms. Allocated memory is still 157.3MB. Free memory was 108.4MB in the beginning and 76.0MB in the end (delta: 32.4MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB.
[2023-11-23 21:30:22,497 INFO  L158              Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:30:22,497 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 1624.52ms. Allocated memory is still 157.3MB. Free memory was 108.4MB in the beginning and 87.9MB in the end (delta: 20.5MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB.
[2023-11-23 21:30:22,498 INFO  L158              Benchmark]: Boogie Procedure Inliner took 73.93ms. Allocated memory is still 157.3MB. Free memory was 87.9MB in the beginning and 84.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-23 21:30:22,498 INFO  L158              Benchmark]: Boogie Preprocessor took 45.08ms. Allocated memory is still 157.3MB. Free memory was 84.6MB in the beginning and 83.7MB in the end (delta: 904.8kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:30:22,499 INFO  L158              Benchmark]: RCFGBuilder took 636.67ms. Allocated memory is still 157.3MB. Free memory was 83.7MB in the beginning and 67.9MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2023-11-23 21:30:22,499 INFO  L158              Benchmark]: TraceAbstraction took 1356.11ms. Allocated memory is still 157.3MB. Free memory was 67.0MB in the beginning and 81.3MB in the end (delta: -14.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:30:22,499 INFO  L158              Benchmark]: Witness Printer took 106.99ms. Allocated memory is still 157.3MB. Free memory was 81.3MB in the beginning and 76.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-23 21:30:22,501 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 1624.52ms. Allocated memory is still 157.3MB. Free memory was 108.4MB in the beginning and 87.9MB in the end (delta: 20.5MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 73.93ms. Allocated memory is still 157.3MB. Free memory was 87.9MB in the beginning and 84.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 45.08ms. Allocated memory is still 157.3MB. Free memory was 84.6MB in the beginning and 83.7MB in the end (delta: 904.8kB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 636.67ms. Allocated memory is still 157.3MB. Free memory was 83.7MB in the beginning and 67.9MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
 * TraceAbstraction took 1356.11ms. Allocated memory is still 157.3MB. Free memory was 67.0MB in the beginning and 81.3MB in the end (delta: -14.3MB). There was no memory consumed. Max. memory is 16.1GB.
 * Witness Printer took 106.99ms. Allocated memory is still 157.3MB. Free memory was 81.3MB in the beginning and 76.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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
  - PositiveResult [Line: 1569]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 1569]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 1588]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - PositiveResult [Line: 1588]: integer overflow can never occur
    For all program executions holds that integer overflow can never occur at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 28 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 53 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 20 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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
  - AllSpecificationsHoldResult: All specifications hold
    4 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2023-11-23 21:30:22,534 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f71d7c6-1f99-4f79-b04f-4d85f5514bbe/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE