/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 00:43:11,337 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 00:43:11,339 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 00:43:11,379 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2023-04-01 00:43:11,385 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2023-04-01 00:43:11,394 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2023-04-01 00:43:11,396 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-01 00:43:11,400 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 00:43:11,401 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 00:43:11,402 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 00:43:11,403 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2023-04-01 00:43:11,411 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 00:43:11,412 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 00:43:11,419 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 00:43:11,424 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 00:43:11,425 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
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[2023-04-01 00:43:11,426 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 00:43:11,427 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 00:43:11,428 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2023-04-01 00:43:11,458 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 00:43:11,458 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 00:43:11,458 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 00:43:11,459 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 00:43:11,459 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 00:43:11,459 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 00:43:11,460 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 00:43:11,460 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 00:43:11,460 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 00:43:11,460 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 00:43:11,461 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 00:43:11,461 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 00:43:11,461 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 00:43:11,461 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 00:43:11,461 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 00:43:11,461 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 00:43:11,461 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 00:43:11,461 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 00:43:11,462 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 00:43:11,462 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 00:43:11,462 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 00:43:11,462 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 00:43:11,463 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 00:43:11,463 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 00:43:11,463 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 00:43:11,463 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 00:43:11,463 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 00:43:11,463 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 00:43:11,463 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 00:43:11,463 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 00:43:11,464 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 00:43:11,464 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 00:43:11,464 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:43:11,464 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 00:43:11,464 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 00:43:11,465 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 00:43:11,465 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 00:43:11,465 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 00:43:11,465 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 00:43:11,465 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 00:43:11,465 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 00:43:11,465 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain
[2023-04-01 00:43:11,676 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 00:43:11,701 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 00:43:11,703 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 00:43:11,704 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 00:43:11,705 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 00:43:11,706 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c
[2023-04-01 00:43:12,880 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 00:43:13,392 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 00:43:13,393 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c
[2023-04-01 00:43:13,455 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8fab5aac/9b30ea98e0104f2fba5b3c3704186673/FLAGf7f67a7bd
[2023-04-01 00:43:13,470 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8fab5aac/9b30ea98e0104f2fba5b3c3704186673
[2023-04-01 00:43:13,472 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 00:43:13,474 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 00:43:13,477 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 00:43:13,477 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 00:43:13,480 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 00:43:13,481 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:43:13" (1/1) ...
[2023-04-01 00:43:13,482 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3e48e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:13, skipping insertion in model container
[2023-04-01 00:43:13,483 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:43:13" (1/1) ...
[2023-04-01 00:43:13,489 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 00:43:13,846 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 00:43:14,561 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[40670,40683]
[2023-04-01 00:43:16,950 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:43:16,969 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 00:43:17,285 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[40670,40683]
[2023-04-01 00:43:19,172 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:43:19,236 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 00:43:19,236 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19 WrapperNode
[2023-04-01 00:43:19,236 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 00:43:19,237 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 00:43:19,237 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 00:43:19,237 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 00:43:19,248 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,249 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,359 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,360 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,566 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,703 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,786 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,816 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,938 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 00:43:19,939 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 00:43:19,940 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 00:43:19,940 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 00:43:19,941 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (1/1) ...
[2023-04-01 00:43:19,947 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:43:19,956 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:43:19,971 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-04-01 00:43:19,993 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-04-01 00:43:20,015 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 00:43:20,016 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 00:43:20,016 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 00:43:20,016 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 00:43:20,016 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 00:43:20,016 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 00:43:20,016 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 00:43:20,016 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 00:43:20,016 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 00:43:20,017 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 00:43:20,018 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 00:43:20,452 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 00:43:20,454 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 00:43:30,107 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 00:43:43,090 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 00:43:43,091 INFO  L302             CfgBuilder]: Removed 0 assume(true) statements.
[2023-04-01 00:43:43,098 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:43:43 BoogieIcfgContainer
[2023-04-01 00:43:43,098 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 00:43:43,100 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 00:43:43,100 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 00:43:43,103 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 00:43:43,103 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:43:13" (1/3) ...
[2023-04-01 00:43:43,104 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8df1a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:43:43, skipping insertion in model container
[2023-04-01 00:43:43,104 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:43:19" (2/3) ...
[2023-04-01 00:43:43,104 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8df1a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:43:43, skipping insertion in model container
[2023-04-01 00:43:43,104 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:43:43" (3/3) ...
[2023-04-01 00:43:43,105 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c
[2023-04-01 00:43:43,121 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 00:43:43,122 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 00:43:43,251 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 00:43:43,257 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=LoopsAndPotentialCycles, 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;@27585594, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 00:43:43,258 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 00:43:43,275 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5217 states, 5203 states have (on average 1.70344032289064) internal successors, (8863), 5212 states have internal predecessors, (8863), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-01 00:43:43,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 295
[2023-04-01 00:43:43,313 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:43:43,314 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:43:43,315 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:43:43,319 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:43:43,320 INFO  L85        PathProgramCache]: Analyzing trace with hash 1041398683, now seen corresponding path program 1 times
[2023-04-01 00:43:43,328 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:43:43,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991686848]
[2023-04-01 00:43:43,330 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:43:43,331 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:43:43,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:43:44,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:43:44,405 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:43:44,405 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991686848]
[2023-04-01 00:43:44,406 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991686848] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:43:44,406 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:43:44,406 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 00:43:44,407 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486632357]
[2023-04-01 00:43:44,408 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:43:44,414 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 00:43:44,415 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:43:44,450 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 00:43:44,451 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 00:43:44,468 INFO  L87              Difference]: Start difference. First operand  has 5217 states, 5203 states have (on average 1.70344032289064) internal successors, (8863), 5212 states have internal predecessors, (8863), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:45,776 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:43:45,777 INFO  L93              Difference]: Finished difference Result 10190 states and 17126 transitions.
[2023-04-01 00:43:45,778 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 00:43:45,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 294
[2023-04-01 00:43:45,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:43:45,826 INFO  L225             Difference]: With dead ends: 10190
[2023-04-01 00:43:45,826 INFO  L226             Difference]: Without dead ends: 6096
[2023-04-01 00:43:45,845 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
[2023-04-01 00:43:45,849 INFO  L413           NwaCegarLoop]: 7889 mSDtfsCounter, 5753 mSDsluCounter, 4362 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5753 SdHoareTripleChecker+Valid, 12251 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-04-01 00:43:45,850 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5753 Valid, 12251 Invalid, 370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-04-01 00:43:45,876 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6096 states.
[2023-04-01 00:43:46,154 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 6094.
[2023-04-01 00:43:46,171 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6094 states, 6090 states have (on average 1.600328407224959) internal successors, (9746), 6090 states have internal predecessors, (9746), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:46,200 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 9749 transitions.
[2023-04-01 00:43:46,202 INFO  L78                 Accepts]: Start accepts. Automaton has 6094 states and 9749 transitions. Word has length 294
[2023-04-01 00:43:46,203 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:43:46,203 INFO  L495      AbstractCegarLoop]: Abstraction has 6094 states and 9749 transitions.
[2023-04-01 00:43:46,204 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:46,204 INFO  L276                IsEmpty]: Start isEmpty. Operand 6094 states and 9749 transitions.
[2023-04-01 00:43:46,220 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 305
[2023-04-01 00:43:46,220 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:43:46,220 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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]
[2023-04-01 00:43:46,221 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 00:43:46,221 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:43:46,222 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:43:46,222 INFO  L85        PathProgramCache]: Analyzing trace with hash 848284702, now seen corresponding path program 1 times
[2023-04-01 00:43:46,222 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:43:46,222 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085278403]
[2023-04-01 00:43:46,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:43:46,223 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:43:46,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:43:46,844 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:43:46,845 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:43:46,845 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085278403]
[2023-04-01 00:43:46,845 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085278403] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:43:46,845 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:43:46,846 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 00:43:46,846 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200071515]
[2023-04-01 00:43:46,846 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:43:46,848 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 00:43:46,848 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:43:46,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 00:43:46,849 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 00:43:46,850 INFO  L87              Difference]: Start difference. First operand 6094 states and 9749 transitions. Second operand  has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:48,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:43:48,165 INFO  L93              Difference]: Finished difference Result 13218 states and 21268 transitions.
[2023-04-01 00:43:48,167 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 00:43:48,170 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 304
[2023-04-01 00:43:48,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:43:48,215 INFO  L225             Difference]: With dead ends: 13218
[2023-04-01 00:43:48,215 INFO  L226             Difference]: Without dead ends: 7970
[2023-04-01 00:43:48,236 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
[2023-04-01 00:43:48,238 INFO  L413           NwaCegarLoop]: 6769 mSDtfsCounter, 5589 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5589 SdHoareTripleChecker+Valid, 10297 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-04-01 00:43:48,239 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5589 Valid, 10297 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-04-01 00:43:48,254 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7970 states.
[2023-04-01 00:43:48,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7970 to 7968.
[2023-04-01 00:43:48,749 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7968 states, 7964 states have (on average 1.6077348066298343) internal successors, (12804), 7964 states have internal predecessors, (12804), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:48,794 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7968 states to 7968 states and 12807 transitions.
[2023-04-01 00:43:48,795 INFO  L78                 Accepts]: Start accepts. Automaton has 7968 states and 12807 transitions. Word has length 304
[2023-04-01 00:43:48,796 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:43:48,796 INFO  L495      AbstractCegarLoop]: Abstraction has 7968 states and 12807 transitions.
[2023-04-01 00:43:48,797 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:48,797 INFO  L276                IsEmpty]: Start isEmpty. Operand 7968 states and 12807 transitions.
[2023-04-01 00:43:48,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 315
[2023-04-01 00:43:48,816 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:43:48,816 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1]
[2023-04-01 00:43:48,816 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 00:43:48,817 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:43:48,817 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:43:48,817 INFO  L85        PathProgramCache]: Analyzing trace with hash -1151485055, now seen corresponding path program 1 times
[2023-04-01 00:43:48,817 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:43:48,817 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667647136]
[2023-04-01 00:43:48,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:43:48,818 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:43:48,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:43:49,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:43:49,350 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:43:49,350 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667647136]
[2023-04-01 00:43:49,350 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667647136] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:43:49,351 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:43:49,351 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 00:43:49,351 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338260850]
[2023-04-01 00:43:49,351 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:43:49,352 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 00:43:49,352 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:43:49,353 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 00:43:49,353 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 00:43:49,353 INFO  L87              Difference]: Start difference. First operand 7968 states and 12807 transitions. Second operand  has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:50,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:43:50,750 INFO  L93              Difference]: Finished difference Result 18236 states and 29312 transitions.
[2023-04-01 00:43:50,751 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 00:43:50,751 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 314
[2023-04-01 00:43:50,752 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:43:50,801 INFO  L225             Difference]: With dead ends: 18236
[2023-04-01 00:43:50,801 INFO  L226             Difference]: Without dead ends: 10977
[2023-04-01 00:43:50,820 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
[2023-04-01 00:43:50,821 INFO  L413           NwaCegarLoop]: 6533 mSDtfsCounter, 5543 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5543 SdHoareTripleChecker+Valid, 9846 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-04-01 00:43:50,821 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5543 Valid, 9846 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-04-01 00:43:50,837 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10977 states.
[2023-04-01 00:43:51,724 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10977 to 10975.
[2023-04-01 00:43:51,746 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10975 states, 10971 states have (on average 1.602862090967095) internal successors, (17585), 10971 states have internal predecessors, (17585), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:51,775 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10975 states to 10975 states and 17588 transitions.
[2023-04-01 00:43:51,775 INFO  L78                 Accepts]: Start accepts. Automaton has 10975 states and 17588 transitions. Word has length 314
[2023-04-01 00:43:51,776 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:43:51,776 INFO  L495      AbstractCegarLoop]: Abstraction has 10975 states and 17588 transitions.
[2023-04-01 00:43:51,776 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:51,777 INFO  L276                IsEmpty]: Start isEmpty. Operand 10975 states and 17588 transitions.
[2023-04-01 00:43:51,795 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 325
[2023-04-01 00:43:51,795 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:43:51,795 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:43:51,795 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 00:43:51,796 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:43:51,796 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:43:51,796 INFO  L85        PathProgramCache]: Analyzing trace with hash 1780874766, now seen corresponding path program 1 times
[2023-04-01 00:43:51,796 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:43:51,796 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077563525]
[2023-04-01 00:43:51,797 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:43:51,797 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:43:51,920 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:43:52,138 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:43:52,140 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:43:52,140 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077563525]
[2023-04-01 00:43:52,140 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077563525] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:43:52,140 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:43:52,140 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 00:43:52,140 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921483469]
[2023-04-01 00:43:52,141 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:43:52,141 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 00:43:52,141 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:43:52,142 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 00:43:52,142 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 00:43:52,142 INFO  L87              Difference]: Start difference. First operand 10975 states and 17588 transitions. Second operand  has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:54,153 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:43:54,153 INFO  L93              Difference]: Finished difference Result 25839 states and 41265 transitions.
[2023-04-01 00:43:54,154 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 00:43:54,154 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 324
[2023-04-01 00:43:54,155 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:43:54,202 INFO  L225             Difference]: With dead ends: 25839
[2023-04-01 00:43:54,202 INFO  L226             Difference]: Without dead ends: 15518
[2023-04-01 00:43:54,228 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
[2023-04-01 00:43:54,235 INFO  L413           NwaCegarLoop]: 7110 mSDtfsCounter, 5414 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 10338 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-04-01 00:43:54,236 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 10338 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-04-01 00:43:54,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15518 states.
[2023-04-01 00:43:55,239 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15518 to 15516.
[2023-04-01 00:43:55,276 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15516 states, 15512 states have (on average 1.5876740587931923) internal successors, (24628), 15512 states have internal predecessors, (24628), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:55,315 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15516 states to 15516 states and 24631 transitions.
[2023-04-01 00:43:55,316 INFO  L78                 Accepts]: Start accepts. Automaton has 15516 states and 24631 transitions. Word has length 324
[2023-04-01 00:43:55,317 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:43:55,317 INFO  L495      AbstractCegarLoop]: Abstraction has 15516 states and 24631 transitions.
[2023-04-01 00:43:55,317 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:55,317 INFO  L276                IsEmpty]: Start isEmpty. Operand 15516 states and 24631 transitions.
[2023-04-01 00:43:55,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 335
[2023-04-01 00:43:55,341 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:43:55,341 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:43:55,341 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 00:43:55,341 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:43:55,342 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:43:55,342 INFO  L85        PathProgramCache]: Analyzing trace with hash 771604754, now seen corresponding path program 1 times
[2023-04-01 00:43:55,342 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:43:55,342 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410803797]
[2023-04-01 00:43:55,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:43:55,343 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:43:55,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:43:55,704 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:43:55,705 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:43:55,705 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410803797]
[2023-04-01 00:43:55,705 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410803797] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:43:55,705 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:43:55,705 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-01 00:43:55,705 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106309362]
[2023-04-01 00:43:55,705 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:43:55,706 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-01 00:43:55,706 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:43:55,708 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-01 00:43:55,710 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-01 00:43:55,711 INFO  L87              Difference]: Start difference. First operand 15516 states and 24631 transitions. Second operand  has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 00:43:58,166 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:43:58,166 INFO  L93              Difference]: Finished difference Result 37236 states and 58844 transitions.
[2023-04-01 00:43:58,167 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-01 00:43:58,167 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 334
[2023-04-01 00:43:58,168 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:43:58,224 INFO  L225             Difference]: With dead ends: 37236
[2023-04-01 00:43:58,224 INFO  L226             Difference]: Without dead ends: 22360
[2023-04-01 00:43:58,254 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
[2023-04-01 00:43:58,255 INFO  L413           NwaCegarLoop]: 6346 mSDtfsCounter, 5445 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 9574 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-04-01 00:43:58,255 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5445 Valid, 9574 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-04-01 00:43:58,276 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22360 states.