./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_preinc_17_good.i --full-output --architecture 64bit


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


Checking for overflows
Using default analysis
Version 9bd2c7ff
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_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_preinc_17_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ --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 0dfd86504ec51385fcf4065bb94bbc6e4d8b669d9b1bf39730438b67cc387928
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 05:04:35,265 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-19 05:04:35,380 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf
[2023-11-19 05:04:35,387 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 05:04:35,388 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 05:04:35,414 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 05:04:35,415 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 05:04:35,416 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 05:04:35,417 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 05:04:35,417 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 05:04:35,418 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-11-19 05:04:35,418 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-19 05:04:35,419 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-11-19 05:04:35,419 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-11-19 05:04:35,420 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-11-19 05:04:35,421 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-11-19 05:04:35,421 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-11-19 05:04:35,422 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-11-19 05:04:35,422 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-11-19 05:04:35,423 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-11-19 05:04:35,424 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-11-19 05:04:35,424 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-11-19 05:04:35,425 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 05:04:35,425 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-19 05:04:35,426 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-19 05:04:35,426 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-19 05:04:35,427 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 05:04:35,427 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 05:04:35,428 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 05:04:35,428 INFO  L153        SettingsManager]:  * Check absence of signed integer overflows=true
[2023-11-19 05:04:35,429 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2023-11-19 05:04:35,429 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-19 05:04:35,430 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-19 05:04:35,430 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 05:04:35,431 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-19 05:04:35,431 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 05:04:35,432 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 05:04:35,432 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 05:04:35,432 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 05:04:35,433 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-11-19 05:04:35,433 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 05:04:35,434 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 05:04:35,434 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-11-19 05:04:35,434 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 05:04:35,435 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_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/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_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ
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 -> 0dfd86504ec51385fcf4065bb94bbc6e4d8b669d9b1bf39730438b67cc387928
[2023-11-19 05:04:35,750 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 05:04:35,794 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 05:04:35,796 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 05:04:35,797 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-19 05:04:35,798 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-19 05:04:35,799 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_preinc_17_good.i
[2023-11-19 05:04:38,904 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-19 05:04:39,299 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-19 05:04:39,299 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fscanf_preinc_17_good.i
[2023-11-19 05:04:39,330 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/data/19d192a17/aa6963606e9347809e8de307f4c3ccbe/FLAG4a05d2c61
[2023-11-19 05:04:39,346 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/data/19d192a17/aa6963606e9347809e8de307f4c3ccbe
[2023-11-19 05:04:39,351 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 05:04:39,354 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 05:04:39,356 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 05:04:39,356 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 05:04:39,365 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 05:04:39,365 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:39" (1/1) ...
[2023-11-19 05:04:39,366 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2f1a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:39, skipping insertion in model container
[2023-11-19 05:04:39,367 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:39" (1/1) ...
[2023-11-19 05:04:39,478 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-19 05:04:39,806 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 05:04:40,308 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 05:04:40,322 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-19 05:04:40,361 WARN  L635        FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 05:04:40,428 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 05:04:40,585 WARN  L675               CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 05:04:40,586 WARN  L675               CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 05:04:40,586 WARN  L675               CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 05:04:40,586 WARN  L675               CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 05:04:40,586 WARN  L675               CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 05:04:40,594 INFO  L206         MainTranslator]: Completed translation
[2023-11-19 05:04:40,595 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40 WrapperNode
[2023-11-19 05:04:40,595 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 05:04:40,596 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 05:04:40,596 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 05:04:40,596 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 05:04:40,605 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,654 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,682 INFO  L138                Inliner]: procedures = 501, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110
[2023-11-19 05:04:40,683 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 05:04:40,684 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 05:04:40,684 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 05:04:40,684 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 05:04:40,697 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,697 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,700 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,704 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,711 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,714 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,717 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,718 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,737 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 05:04:40,738 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 05:04:40,738 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 05:04:40,738 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-19 05:04:40,739 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (1/1) ...
[2023-11-19 05:04:40,747 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 05:04:40,758 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 05:04:40,777 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 05:04:40,805 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 05:04:40,817 INFO  L130     BoogieDeclarations]: Found specification of procedure printIntLine
[2023-11-19 05:04:40,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure printIntLine
[2023-11-19 05:04:40,817 INFO  L130     BoogieDeclarations]: Found specification of procedure printLine
[2023-11-19 05:04:40,819 INFO  L138     BoogieDeclarations]: Found implementation of procedure printLine
[2023-11-19 05:04:40,820 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 05:04:40,820 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 05:04:40,820 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 05:04:40,820 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 05:04:40,821 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 05:04:40,821 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 05:04:40,821 INFO  L130     BoogieDeclarations]: Found specification of procedure time
[2023-11-19 05:04:40,821 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 05:04:40,821 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 05:04:41,000 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-19 05:04:41,002 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 05:04:41,260 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-19 05:04:41,310 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 05:04:41,310 INFO  L302             CfgBuilder]: Removed 4 assume(true) statements.
[2023-11-19 05:04:41,315 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:41 BoogieIcfgContainer
[2023-11-19 05:04:41,315 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 05:04:41,318 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 05:04:41,318 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 05:04:41,321 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-19 05:04:41,321 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:39" (1/3) ...
[2023-11-19 05:04:41,322 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b75236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:41, skipping insertion in model container
[2023-11-19 05:04:41,322 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:40" (2/3) ...
[2023-11-19 05:04:41,322 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b75236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:41, skipping insertion in model container
[2023-11-19 05:04:41,322 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:41" (3/3) ...
[2023-11-19 05:04:41,323 INFO  L112   eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fscanf_preinc_17_good.i
[2023-11-19 05:04:41,342 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 05:04:41,343 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations.
[2023-11-19 05:04:41,391 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 05:04:41,397 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;@1cae7991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-19 05:04:41,397 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2023-11-19 05:04:41,402 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 45 states, 25 states have (on average 1.68) internal successors, (42), 38 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-11-19 05:04:41,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-11-19 05:04:41,409 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:41,409 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:41,410 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:41,415 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:41,415 INFO  L85        PathProgramCache]: Analyzing trace with hash 252893549, now seen corresponding path program 1 times
[2023-11-19 05:04:41,424 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:41,425 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137954582]
[2023-11-19 05:04:41,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:41,426 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:41,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:41,864 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 05:04:41,865 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:41,865 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137954582]
[2023-11-19 05:04:41,866 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137954582] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:41,866 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 05:04:41,866 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 05:04:41,868 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026128672]
[2023-11-19 05:04:41,869 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:41,873 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 05:04:41,873 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:41,901 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 05:04:41,902 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 05:04:41,904 INFO  L87              Difference]: Start difference. First operand  has 45 states, 25 states have (on average 1.68) internal successors, (42), 38 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand  has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 05:04:41,992 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:41,993 INFO  L93              Difference]: Finished difference Result 87 states and 100 transitions.
[2023-11-19 05:04:41,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 05:04:41,995 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 7
[2023-11-19 05:04:41,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:42,002 INFO  L225             Difference]: With dead ends: 87
[2023-11-19 05:04:42,003 INFO  L226             Difference]: Without dead ends: 45
[2023-11-19 05:04:42,005 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
[2023-11-19 05:04:42,009 INFO  L413           NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:42,010 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 114 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:42,027 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2023-11-19 05:04:42,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2023-11-19 05:04:42,046 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 39 states have internal predecessors, (43), 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)
[2023-11-19 05:04:42,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions.
[2023-11-19 05:04:42,050 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 7
[2023-11-19 05:04:42,051 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:42,051 INFO  L495      AbstractCegarLoop]: Abstraction has 45 states and 51 transitions.
[2023-11-19 05:04:42,051 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 05:04:42,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions.
[2023-11-19 05:04:42,053 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-19 05:04:42,053 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:42,053 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:42,053 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 05:04:42,054 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:42,054 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:42,055 INFO  L85        PathProgramCache]: Analyzing trace with hash 579141736, now seen corresponding path program 1 times
[2023-11-19 05:04:42,055 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:42,055 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283432375]
[2023-11-19 05:04:42,055 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:42,056 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:42,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:42,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 05:04:42,274 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:42,275 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283432375]
[2023-11-19 05:04:42,275 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283432375] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 05:04:42,276 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909470225]
[2023-11-19 05:04:42,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:42,277 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:04:42,278 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 05:04:42,284 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 05:04:42,304 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 05:04:42,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:42,409 INFO  L262         TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-19 05:04:42,414 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 05:04:42,464 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 05:04:42,464 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 05:04:42,465 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909470225] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:42,465 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 05:04:42,465 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2023-11-19 05:04:42,466 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145335035]
[2023-11-19 05:04:42,466 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:42,467 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 05:04:42,467 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:42,468 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 05:04:42,468 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-11-19 05:04:42,469 INFO  L87              Difference]: Start difference. First operand 45 states and 51 transitions. Second operand  has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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)
[2023-11-19 05:04:42,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:42,517 INFO  L93              Difference]: Finished difference Result 80 states and 91 transitions.
[2023-11-19 05:04:42,517 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-19 05:04:42,518 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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
[2023-11-19 05:04:42,518 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:42,519 INFO  L225             Difference]: With dead ends: 80
[2023-11-19 05:04:42,519 INFO  L226             Difference]: Without dead ends: 41
[2023-11-19 05:04:42,520 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2023-11-19 05:04:42,521 INFO  L413           NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:42,522 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 88 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:42,523 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2023-11-19 05:04:42,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2023-11-19 05:04:42,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41 states, 25 states have (on average 1.52) internal successors, (38), 35 states have internal predecessors, (38), 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)
[2023-11-19 05:04:42,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions.
[2023-11-19 05:04:42,530 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 10
[2023-11-19 05:04:42,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:42,531 INFO  L495      AbstractCegarLoop]: Abstraction has 41 states and 46 transitions.
[2023-11-19 05:04:42,531 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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)
[2023-11-19 05:04:42,531 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions.
[2023-11-19 05:04:42,532 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-11-19 05:04:42,532 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:42,532 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:42,560 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-11-19 05:04:42,751 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:04:42,752 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:42,752 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:42,752 INFO  L85        PathProgramCache]: Analyzing trace with hash -1790107318, now seen corresponding path program 1 times
[2023-11-19 05:04:42,753 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:42,753 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888422604]
[2023-11-19 05:04:42,753 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:42,753 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:42,791 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:43,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 05:04:43,067 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:43,068 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888422604]
[2023-11-19 05:04:43,068 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888422604] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:43,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 05:04:43,073 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 05:04:43,073 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306583567]
[2023-11-19 05:04:43,073 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:43,074 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 05:04:43,074 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:43,074 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 05:04:43,075 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-19 05:04:43,075 INFO  L87              Difference]: Start difference. First operand 41 states and 46 transitions. Second operand  has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 05:04:43,176 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:43,176 INFO  L93              Difference]: Finished difference Result 41 states and 46 transitions.
[2023-11-19 05:04:43,177 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-19 05:04:43,177 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 12
[2023-11-19 05:04:43,177 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:43,178 INFO  L225             Difference]: With dead ends: 41
[2023-11-19 05:04:43,178 INFO  L226             Difference]: Without dead ends: 40
[2023-11-19 05:04:43,179 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-19 05:04:43,180 INFO  L413           NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:43,181 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 84 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-19 05:04:43,182 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2023-11-19 05:04:43,187 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2023-11-19 05:04:43,188 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 25 states have (on average 1.48) internal successors, (37), 34 states have internal predecessors, (37), 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)
[2023-11-19 05:04:43,189 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions.
[2023-11-19 05:04:43,189 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 12
[2023-11-19 05:04:43,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:43,190 INFO  L495      AbstractCegarLoop]: Abstraction has 40 states and 45 transitions.
[2023-11-19 05:04:43,190 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 05:04:43,190 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions.
[2023-11-19 05:04:43,191 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-11-19 05:04:43,191 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:43,191 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:43,191 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 05:04:43,191 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:43,192 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:43,192 INFO  L85        PathProgramCache]: Analyzing trace with hash -1790005669, now seen corresponding path program 1 times
[2023-11-19 05:04:43,192 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:43,192 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129302861]
[2023-11-19 05:04:43,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:43,193 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:43,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:43,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 05:04:43,283 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:43,283 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129302861]
[2023-11-19 05:04:43,283 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129302861] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:43,283 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 05:04:43,283 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 05:04:43,284 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460260107]
[2023-11-19 05:04:43,284 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:43,284 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 05:04:43,285 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:43,285 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 05:04:43,285 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 05:04:43,286 INFO  L87              Difference]: Start difference. First operand 40 states and 45 transitions. Second operand  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 05:04:43,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:43,318 INFO  L93              Difference]: Finished difference Result 71 states and 81 transitions.
[2023-11-19 05:04:43,318 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-19 05:04:43,319 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 12
[2023-11-19 05:04:43,319 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:43,322 INFO  L225             Difference]: With dead ends: 71
[2023-11-19 05:04:43,322 INFO  L226             Difference]: Without dead ends: 53
[2023-11-19 05:04:43,323 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 05:04:43,326 INFO  L413           NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:43,327 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 67 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:43,329 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2023-11-19 05:04:43,340 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41.
[2023-11-19 05:04:43,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 35 states have internal predecessors, (38), 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)
[2023-11-19 05:04:43,346 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions.
[2023-11-19 05:04:43,347 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 12
[2023-11-19 05:04:43,347 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:43,348 INFO  L495      AbstractCegarLoop]: Abstraction has 41 states and 46 transitions.
[2023-11-19 05:04:43,348 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 05:04:43,348 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions.
[2023-11-19 05:04:43,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-11-19 05:04:43,349 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:43,350 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:43,350 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 05:04:43,351 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:43,351 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:43,351 INFO  L85        PathProgramCache]: Analyzing trace with hash 341248067, now seen corresponding path program 1 times
[2023-11-19 05:04:43,352 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:43,352 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728272432]
[2023-11-19 05:04:43,352 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:43,353 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:43,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:43,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 05:04:43,435 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:43,435 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728272432]
[2023-11-19 05:04:43,435 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728272432] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:43,435 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 05:04:43,435 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 05:04:43,436 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908357492]
[2023-11-19 05:04:43,436 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:43,436 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 05:04:43,436 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:43,437 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 05:04:43,437 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 05:04:43,437 INFO  L87              Difference]: Start difference. First operand 41 states and 46 transitions. Second operand  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 05:04:43,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:43,481 INFO  L93              Difference]: Finished difference Result 41 states and 46 transitions.
[2023-11-19 05:04:43,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 05:04:43,482 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13
[2023-11-19 05:04:43,482 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:43,482 INFO  L225             Difference]: With dead ends: 41
[2023-11-19 05:04:43,483 INFO  L226             Difference]: Without dead ends: 40
[2023-11-19 05:04:43,483 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 05:04:43,484 INFO  L413           NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:43,485 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:43,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2023-11-19 05:04:43,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2023-11-19 05:04:43,492 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 34 states have internal predecessors, (37), 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)
[2023-11-19 05:04:43,492 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions.
[2023-11-19 05:04:43,493 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 13
[2023-11-19 05:04:43,493 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:43,493 INFO  L495      AbstractCegarLoop]: Abstraction has 40 states and 45 transitions.
[2023-11-19 05:04:43,493 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-11-19 05:04:43,493 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions.
[2023-11-19 05:04:43,494 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2023-11-19 05:04:43,494 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:43,494 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:43,495 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 05:04:43,495 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:43,495 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:43,496 INFO  L85        PathProgramCache]: Analyzing trace with hash 232851675, now seen corresponding path program 1 times
[2023-11-19 05:04:43,496 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:43,496 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651912051]
[2023-11-19 05:04:43,496 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:43,496 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:43,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:43,572 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-11-19 05:04:43,572 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:43,572 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651912051]
[2023-11-19 05:04:43,572 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651912051] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:43,573 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 05:04:43,573 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 05:04:43,573 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062774736]
[2023-11-19 05:04:43,573 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:43,574 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 05:04:43,574 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:43,574 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 05:04:43,574 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 05:04:43,575 INFO  L87              Difference]: Start difference. First operand 40 states and 45 transitions. Second operand  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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)
[2023-11-19 05:04:43,623 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:43,623 INFO  L93              Difference]: Finished difference Result 51 states and 59 transitions.
[2023-11-19 05:04:43,624 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 05:04:43,624 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) Word has length 16
[2023-11-19 05:04:43,624 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:43,625 INFO  L225             Difference]: With dead ends: 51
[2023-11-19 05:04:43,625 INFO  L226             Difference]: Without dead ends: 49
[2023-11-19 05:04:43,626 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
[2023-11-19 05:04:43,626 INFO  L413           NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:43,627 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 90 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:43,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2023-11-19 05:04:43,634 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2023-11-19 05:04:43,634 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 42 states have internal predecessors, (45), 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)
[2023-11-19 05:04:43,635 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions.
[2023-11-19 05:04:43,635 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 16
[2023-11-19 05:04:43,635 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:43,635 INFO  L495      AbstractCegarLoop]: Abstraction has 49 states and 57 transitions.
[2023-11-19 05:04:43,635 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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)
[2023-11-19 05:04:43,636 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions.
[2023-11-19 05:04:43,636 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2023-11-19 05:04:43,636 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:43,637 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:43,637 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 05:04:43,637 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:43,637 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:43,638 INFO  L85        PathProgramCache]: Analyzing trace with hash -1303002884, now seen corresponding path program 1 times
[2023-11-19 05:04:43,638 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:43,638 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506367246]
[2023-11-19 05:04:43,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:43,638 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:43,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:43,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:04:43,699 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:43,700 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506367246]
[2023-11-19 05:04:43,700 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506367246] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:43,700 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 05:04:43,700 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 05:04:43,700 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866899352]
[2023-11-19 05:04:43,700 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:43,701 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 05:04:43,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:43,701 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 05:04:43,702 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 05:04:43,702 INFO  L87              Difference]: Start difference. First operand 49 states and 57 transitions. Second operand  has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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)
[2023-11-19 05:04:43,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:43,741 INFO  L93              Difference]: Finished difference Result 67 states and 76 transitions.
[2023-11-19 05:04:43,741 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 05:04:43,741 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 20
[2023-11-19 05:04:43,741 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:43,742 INFO  L225             Difference]: With dead ends: 67
[2023-11-19 05:04:43,742 INFO  L226             Difference]: Without dead ends: 52
[2023-11-19 05:04:43,743 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
[2023-11-19 05:04:43,744 INFO  L413           NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:43,744 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 98 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:43,745 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2023-11-19 05:04:43,750 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2023-11-19 05:04:43,751 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 52 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 45 states have internal predecessors, (48), 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)
[2023-11-19 05:04:43,751 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions.
[2023-11-19 05:04:43,751 INFO  L78                 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 20
[2023-11-19 05:04:43,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:43,752 INFO  L495      AbstractCegarLoop]: Abstraction has 52 states and 60 transitions.
[2023-11-19 05:04:43,752 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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)
[2023-11-19 05:04:43,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions.
[2023-11-19 05:04:43,753 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2023-11-19 05:04:43,753 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:43,753 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:43,754 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-19 05:04:43,754 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:43,754 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:43,754 INFO  L85        PathProgramCache]: Analyzing trace with hash 1441522428, now seen corresponding path program 1 times
[2023-11-19 05:04:43,754 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:43,755 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911394023]
[2023-11-19 05:04:43,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:43,755 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:43,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:43,831 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-11-19 05:04:43,831 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:43,831 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911394023]
[2023-11-19 05:04:43,831 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911394023] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 05:04:43,831 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984508782]
[2023-11-19 05:04:43,831 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:43,832 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:04:43,832 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 05:04:43,833 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 05:04:43,840 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 05:04:43,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:43,955 INFO  L262         TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-19 05:04:43,958 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 05:04:43,998 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-11-19 05:04:43,998 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 05:04:43,999 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984508782] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:43,999 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 05:04:43,999 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2023-11-19 05:04:43,999 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236895999]
[2023-11-19 05:04:43,999 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:44,000 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 05:04:44,000 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:44,001 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 05:04:44,001 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-11-19 05:04:44,002 INFO  L87              Difference]: Start difference. First operand 52 states and 60 transitions. Second operand  has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 05:04:44,055 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:44,055 INFO  L93              Difference]: Finished difference Result 76 states and 85 transitions.
[2023-11-19 05:04:44,055 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-19 05:04:44,055 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24
[2023-11-19 05:04:44,056 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:44,056 INFO  L225             Difference]: With dead ends: 76
[2023-11-19 05:04:44,057 INFO  L226             Difference]: Without dead ends: 41
[2023-11-19 05:04:44,059 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2023-11-19 05:04:44,063 INFO  L413           NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:44,064 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 104 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:44,065 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2023-11-19 05:04:44,074 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2023-11-19 05:04:44,074 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 35 states have internal predecessors, (37), 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)
[2023-11-19 05:04:44,074 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions.
[2023-11-19 05:04:44,075 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 24
[2023-11-19 05:04:44,076 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:44,076 INFO  L495      AbstractCegarLoop]: Abstraction has 41 states and 45 transitions.
[2023-11-19 05:04:44,077 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 05:04:44,077 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions.
[2023-11-19 05:04:44,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2023-11-19 05:04:44,078 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:44,078 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:44,109 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 05:04:44,288 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:04:44,288 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:44,289 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:44,289 INFO  L85        PathProgramCache]: Analyzing trace with hash 155612796, now seen corresponding path program 1 times
[2023-11-19 05:04:44,289 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:44,289 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224926465]
[2023-11-19 05:04:44,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:44,289 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:44,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:44,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:04:44,374 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:44,374 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224926465]
[2023-11-19 05:04:44,375 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224926465] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 05:04:44,375 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929763185]
[2023-11-19 05:04:44,375 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:44,375 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:04:44,375 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 05:04:44,376 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 05:04:44,392 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 05:04:44,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:44,495 INFO  L262         TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-19 05:04:44,497 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 05:04:44,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:04:44,529 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 05:04:44,530 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [929763185] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:44,530 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 05:04:44,530 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2023-11-19 05:04:44,530 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652331538]
[2023-11-19 05:04:44,530 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:44,531 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 05:04:44,531 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:44,531 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 05:04:44,531 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-11-19 05:04:44,532 INFO  L87              Difference]: Start difference. First operand 41 states and 45 transitions. Second operand  has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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)
[2023-11-19 05:04:44,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:44,569 INFO  L93              Difference]: Finished difference Result 55 states and 60 transitions.
[2023-11-19 05:04:44,569 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-19 05:04:44,569 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 23
[2023-11-19 05:04:44,570 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:44,571 INFO  L225             Difference]: With dead ends: 55
[2023-11-19 05:04:44,571 INFO  L226             Difference]: Without dead ends: 37
[2023-11-19 05:04:44,571 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2023-11-19 05:04:44,573 INFO  L413           NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:44,574 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 96 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:44,574 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2023-11-19 05:04:44,580 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2023-11-19 05:04:44,580 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 31 states have internal predecessors, (32), 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)
[2023-11-19 05:04:44,581 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions.
[2023-11-19 05:04:44,581 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 23
[2023-11-19 05:04:44,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:44,582 INFO  L495      AbstractCegarLoop]: Abstraction has 37 states and 40 transitions.
[2023-11-19 05:04:44,582 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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)
[2023-11-19 05:04:44,582 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions.
[2023-11-19 05:04:44,583 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2023-11-19 05:04:44,583 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:44,583 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:44,609 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-19 05:04:44,804 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:04:44,805 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:44,805 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:44,805 INFO  L85        PathProgramCache]: Analyzing trace with hash 529035702, now seen corresponding path program 1 times
[2023-11-19 05:04:44,805 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:44,805 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163446854]
[2023-11-19 05:04:44,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:44,806 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:44,842 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:44,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:04:44,889 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:44,889 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163446854]
[2023-11-19 05:04:44,889 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163446854] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:44,889 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 05:04:44,889 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 05:04:44,890 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034166258]
[2023-11-19 05:04:44,890 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:44,890 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 05:04:44,890 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:44,891 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 05:04:44,891 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 05:04:44,891 INFO  L87              Difference]: Start difference. First operand 37 states and 40 transitions. Second operand  has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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)
[2023-11-19 05:04:44,919 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:44,920 INFO  L93              Difference]: Finished difference Result 42 states and 45 transitions.
[2023-11-19 05:04:44,920 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-19 05:04:44,920 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 24
[2023-11-19 05:04:44,921 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:44,922 INFO  L225             Difference]: With dead ends: 42
[2023-11-19 05:04:44,922 INFO  L226             Difference]: Without dead ends: 40
[2023-11-19 05:04:44,922 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
[2023-11-19 05:04:44,923 INFO  L413           NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:44,924 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:44,925 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2023-11-19 05:04:44,932 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2023-11-19 05:04:44,933 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 34 states have internal predecessors, (35), 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)
[2023-11-19 05:04:44,933 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions.
[2023-11-19 05:04:44,934 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24
[2023-11-19 05:04:44,934 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:44,934 INFO  L495      AbstractCegarLoop]: Abstraction has 40 states and 43 transitions.
[2023-11-19 05:04:44,934 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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)
[2023-11-19 05:04:44,934 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions.
[2023-11-19 05:04:44,939 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2023-11-19 05:04:44,939 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:44,939 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:44,940 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-19 05:04:44,940 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:44,941 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:44,941 INFO  L85        PathProgramCache]: Analyzing trace with hash 1904267152, now seen corresponding path program 1 times
[2023-11-19 05:04:44,941 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:44,941 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810536835]
[2023-11-19 05:04:44,941 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:44,942 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:44,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:45,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-11-19 05:04:45,062 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:45,062 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810536835]
[2023-11-19 05:04:45,062 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810536835] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:45,063 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 05:04:45,063 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 05:04:45,063 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752879813]
[2023-11-19 05:04:45,063 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:45,064 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 05:04:45,064 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:45,065 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 05:04:45,065 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 05:04:45,065 INFO  L87              Difference]: Start difference. First operand 40 states and 43 transitions. Second operand  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-19 05:04:45,117 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:45,117 INFO  L93              Difference]: Finished difference Result 46 states and 50 transitions.
[2023-11-19 05:04:45,118 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 05:04:45,118 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30
[2023-11-19 05:04:45,119 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:45,119 INFO  L225             Difference]: With dead ends: 46
[2023-11-19 05:04:45,119 INFO  L226             Difference]: Without dead ends: 44
[2023-11-19 05:04:45,120 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
[2023-11-19 05:04:45,120 INFO  L413           NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:45,121 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 83 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:45,121 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2023-11-19 05:04:45,126 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2023-11-19 05:04:45,127 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 37 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-11-19 05:04:45,127 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions.
[2023-11-19 05:04:45,128 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 30
[2023-11-19 05:04:45,128 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:45,128 INFO  L495      AbstractCegarLoop]: Abstraction has 44 states and 48 transitions.
[2023-11-19 05:04:45,128 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-19 05:04:45,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions.
[2023-11-19 05:04:45,131 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2023-11-19 05:04:45,131 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:45,132 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:45,132 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-19 05:04:45,133 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:45,133 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:45,133 INFO  L85        PathProgramCache]: Analyzing trace with hash 2094810358, now seen corresponding path program 1 times
[2023-11-19 05:04:45,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:45,134 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655389959]
[2023-11-19 05:04:45,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:45,134 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:45,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:45,225 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-11-19 05:04:45,225 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:45,226 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655389959]
[2023-11-19 05:04:45,226 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655389959] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 05:04:45,226 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987230648]
[2023-11-19 05:04:45,226 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:45,226 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:04:45,227 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 05:04:45,228 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 05:04:45,258 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 05:04:45,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:45,354 INFO  L262         TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-19 05:04:45,357 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 05:04:45,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:04:45,403 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 05:04:45,403 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [987230648] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:04:45,403 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 05:04:45,403 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2023-11-19 05:04:45,404 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938089717]
[2023-11-19 05:04:45,404 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:04:45,404 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 05:04:45,404 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:04:45,405 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 05:04:45,405 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-11-19 05:04:45,405 INFO  L87              Difference]: Start difference. First operand 44 states and 48 transitions. Second operand  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-19 05:04:45,433 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:04:45,433 INFO  L93              Difference]: Finished difference Result 44 states and 48 transitions.
[2023-11-19 05:04:45,434 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 05:04:45,434 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33
[2023-11-19 05:04:45,434 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:04:45,435 INFO  L225             Difference]: With dead ends: 44
[2023-11-19 05:04:45,435 INFO  L226             Difference]: Without dead ends: 43
[2023-11-19 05:04:45,435 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2023-11-19 05:04:45,436 INFO  L413           NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 05:04:45,436 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 05:04:45,437 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2023-11-19 05:04:45,441 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2023-11-19 05:04:45,441 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 43 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-11-19 05:04:45,441 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions.
[2023-11-19 05:04:45,442 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 33
[2023-11-19 05:04:45,442 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:04:45,442 INFO  L495      AbstractCegarLoop]: Abstraction has 43 states and 47 transitions.
[2023-11-19 05:04:45,442 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-11-19 05:04:45,442 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions.
[2023-11-19 05:04:45,443 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2023-11-19 05:04:45,443 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:04:45,443 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:04:45,468 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-19 05:04:45,658 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-19 05:04:45,659 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:04:45,659 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:04:45,659 INFO  L85        PathProgramCache]: Analyzing trace with hash 514611782, now seen corresponding path program 1 times
[2023-11-19 05:04:45,659 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:04:45,659 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224762449]
[2023-11-19 05:04:45,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:45,660 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:04:45,681 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:45,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-11-19 05:04:45,762 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:04:45,762 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224762449]
[2023-11-19 05:04:45,763 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224762449] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 05:04:45,763 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958655246]
[2023-11-19 05:04:45,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:04:45,763 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:04:45,763 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 05:04:45,764 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 05:04:45,787 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-19 05:04:45,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:04:45,881 INFO  L262         TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-19 05:04:45,885 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 05:04:45,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:04:45,928 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 05:04:45,988 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:04:45,989 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958655246] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 05:04:45,989 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1820456573]
[2023-11-19 05:04:46,008 INFO  L159        IcfgInterpreter]: Started Sifa with 27 locations of interest
[2023-11-19 05:04:46,008 INFO  L166        IcfgInterpreter]: Building call graph
[2023-11-19 05:04:46,011 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-11-19 05:04:46,016 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-11-19 05:04:46,016 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-11-19 05:04:49,136 INFO  L197        IcfgInterpreter]: Interpreting procedure printIntLine with input of size 107 for LOIs
[2023-11-19 05:04:49,160 INFO  L197        IcfgInterpreter]: Interpreting procedure printLine with input of size 137 for LOIs
[2023-11-19 05:04:49,239 INFO  L180        IcfgInterpreter]: Interpretation finished
[2023-11-19 05:05:10,720 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSifa [1820456573] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 05:05:10,720 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences.
[2023-11-19 05:05:10,721 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 3, 3] total 26
[2023-11-19 05:05:10,721 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25250861]
[2023-11-19 05:05:10,722 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 05:05:10,722 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2023-11-19 05:05:10,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-19 05:05:10,723 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2023-11-19 05:05:10,723 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=544, Unknown=5, NotChecked=0, Total=650
[2023-11-19 05:05:10,724 INFO  L87              Difference]: Start difference. First operand 43 states and 47 transitions. Second operand  has 19 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 05:05:13,679 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-19 05:05:15,898 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-19 05:05:19,075 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-19 05:05:21,149 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-19 05:05:23,268 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-19 05:05:31,279 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-19 05:05:33,363 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-19 05:05:35,863 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2023-11-19 05:05:38,118 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 05:05:38,119 INFO  L93              Difference]: Finished difference Result 70 states and 75 transitions.
[2023-11-19 05:05:38,119 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2023-11-19 05:05:38,119 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34
[2023-11-19 05:05:38,120 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 05:05:38,120 INFO  L225             Difference]: With dead ends: 70
[2023-11-19 05:05:38,120 INFO  L226             Difference]: Without dead ends: 42
[2023-11-19 05:05:38,121 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=112, Invalid=583, Unknown=7, NotChecked=0, Total=702
[2023-11-19 05:05:38,122 INFO  L413           NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time
[2023-11-19 05:05:38,122 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 131 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 423 Invalid, 8 Unknown, 0 Unchecked, 19.3s Time]
[2023-11-19 05:05:38,123 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2023-11-19 05:05:38,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2023-11-19 05:05:38,132 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 35 states have internal predecessors, (36), 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)
[2023-11-19 05:05:38,132 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions.
[2023-11-19 05:05:38,133 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 34
[2023-11-19 05:05:38,133 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 05:05:38,133 INFO  L495      AbstractCegarLoop]: Abstraction has 42 states and 44 transitions.
[2023-11-19 05:05:38,133 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-11-19 05:05:38,134 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions.
[2023-11-19 05:05:38,134 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2023-11-19 05:05:38,134 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 05:05:38,134 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 05:05:38,159 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-19 05:05:38,335 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-19 05:05:38,335 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] ===
[2023-11-19 05:05:38,336 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 05:05:38,336 INFO  L85        PathProgramCache]: Analyzing trace with hash 313370580, now seen corresponding path program 1 times
[2023-11-19 05:05:38,336 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 05:05:38,336 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679518761]
[2023-11-19 05:05:38,336 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:05:38,336 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 05:05:38,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:05:38,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2023-11-19 05:05:38,509 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-19 05:05:38,509 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679518761]
[2023-11-19 05:05:38,509 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679518761] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 05:05:38,509 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888749534]
[2023-11-19 05:05:38,509 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 05:05:38,510 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 05:05:38,510 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 05:05:38,511 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 05:05:38,532 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb862629-099f-4864-8d0d-c7a99517e46d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-19 05:05:38,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 05:05:38,623 INFO  L262         TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-19 05:05:38,625 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 05:05:38,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:05:38,654 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 05:05:38,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-11-19 05:05:38,696 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [888749534] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 05:05:38,696 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1374684752]
[2023-11-19 05:05:38,699 INFO  L159        IcfgInterpreter]: Started Sifa with 30 locations of interest
[2023-11-19 05:05:38,699 INFO  L166        IcfgInterpreter]: Building call graph
[2023-11-19 05:05:38,700 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-11-19 05:05:38,700 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-11-19 05:05:38,700 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-11-19 05:05:41,227 INFO  L197        IcfgInterpreter]: Interpreting procedure printIntLine with input of size 195 for LOIs
[2023-11-19 05:05:41,306 INFO  L197        IcfgInterpreter]: Interpreting procedure printLine with input of size 58 for LOIs
[2023-11-19 05:05:41,316 INFO  L180        IcfgInterpreter]: Interpretation finished