./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem101_label20.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 2329fc70
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_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29d6a971fe1c57642985ba3a8a9a876e2745ba1ba1e8ec89c36172a2a1c9e3b4
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-14 13:11:29,439 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-12-14 13:11:29,441 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-14 13:11:29,461 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-14 13:11:29,461 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-14 13:11:29,462 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-14 13:11:29,463 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-14 13:11:29,465 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-14 13:11:29,467 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-14 13:11:29,468 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-14 13:11:29,468 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-12-14 13:11:29,470 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-14 13:11:29,470 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-14 13:11:29,471 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-14 13:11:29,472 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-14 13:11:29,473 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-14 13:11:29,474 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-14 13:11:29,475 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-14 13:11:29,476 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-14 13:11:29,478 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-14 13:11:29,480 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-14 13:11:29,481 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-14 13:11:29,482 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-12-14 13:11:29,483 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-14 13:11:29,487 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-14 13:11:29,487 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-14 13:11:29,488 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-14 13:11:29,489 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-14 13:11:29,489 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-14 13:11:29,490 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-14 13:11:29,490 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-14 13:11:29,491 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-14 13:11:29,492 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-14 13:11:29,493 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-14 13:11:29,494 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-14 13:11:29,494 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-14 13:11:29,494 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-14 13:11:29,494 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-14 13:11:29,495 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-14 13:11:29,496 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-14 13:11:29,496 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-12-14 13:11:29,497 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf
[2022-12-14 13:11:29,517 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-12-14 13:11:29,517 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-14 13:11:29,518 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-14 13:11:29,518 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-14 13:11:29,519 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-14 13:11:29,519 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-14 13:11:29,519 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-12-14 13:11:29,519 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-12-14 13:11:29,519 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-12-14 13:11:29,519 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-12-14 13:11:29,519 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-12-14 13:11:29,520 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-12-14 13:11:29,520 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-12-14 13:11:29,520 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-12-14 13:11:29,520 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-12-14 13:11:29,520 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-12-14 13:11:29,521 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-12-14 13:11:29,521 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-12-14 13:11:29,521 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-14 13:11:29,521 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-12-14 13:11:29,521 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-12-14 13:11:29,522 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-12-14 13:11:29,522 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-12-14 13:11:29,522 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-12-14 13:11:29,522 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-14 13:11:29,522 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-12-14 13:11:29,522 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-12-14 13:11:29,522 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-12-14 13:11:29,523 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-12-14 13:11:29,523 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-12-14 13:11:29,523 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-14 13:11:29,523 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-12-14 13:11:29,523 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 13:11:29,524 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-14 13:11:29,524 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2022-12-14 13:11:29,524 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-12-14 13:11:29,524 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-12-14 13:11:29,524 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-12-14 13:11:29,524 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-14 13:11:29,524 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-12-14 13:11:29,524 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-12-14 13:11:29,525 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/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_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
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 ! call(reach_error())) )


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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29d6a971fe1c57642985ba3a8a9a876e2745ba1ba1e8ec89c36172a2a1c9e3b4
[2022-12-14 13:11:29,713 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-14 13:11:29,731 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-14 13:11:29,733 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-14 13:11:29,734 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-12-14 13:11:29,735 INFO  L275        PluginConnector]: CDTParser initialized
[2022-12-14 13:11:29,736 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-programs/Problem101_label20.c
[2022-12-14 13:11:32,362 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-12-14 13:11:33,615 INFO  L351              CDTParser]: Found 1 translation units.
[2022-12-14 13:11:33,615 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/sv-benchmarks/c/eca-programs/Problem101_label20.c
[2022-12-14 13:11:33,739 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/data/415dc24f9/6dbfc0b93951422ea75086544da2d14f/FLAG8d55c37f1
[2022-12-14 13:11:33,750 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/data/415dc24f9/6dbfc0b93951422ea75086544da2d14f
[2022-12-14 13:11:33,752 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-14 13:11:33,753 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-14 13:11:33,753 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-14 13:11:33,753 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-14 13:11:33,756 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-14 13:11:33,756 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:11:33" (1/1) ...
[2022-12-14 13:11:33,757 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a22c0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:33, skipping insertion in model container
[2022-12-14 13:11:33,758 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:11:33" (1/1) ...
[2022-12-14 13:11:33,763 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-12-14 13:11:34,452 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-12-14 13:11:44,067 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/sv-benchmarks/c/eca-programs/Problem101_label20.c[2769356,2769369]
[2022-12-14 13:11:44,121 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 13:11:44,128 INFO  L203         MainTranslator]: Completed pre-run
[2022-12-14 13:11:49,950 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/sv-benchmarks/c/eca-programs/Problem101_label20.c[2769356,2769369]
[2022-12-14 13:11:49,961 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-12-14 13:11:50,654 INFO  L208         MainTranslator]: Completed translation
[2022-12-14 13:11:50,654 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50 WrapperNode
[2022-12-14 13:11:50,654 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-14 13:11:50,655 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-14 13:11:50,655 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-14 13:11:50,655 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-14 13:11:50,660 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:50,914 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:52,116 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83780
[2022-12-14 13:11:52,117 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-14 13:11:52,117 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-14 13:11:52,117 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-14 13:11:52,117 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-12-14 13:11:52,126 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:52,126 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:52,319 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:52,320 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:52,843 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:52,960 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:53,052 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:53,114 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:53,407 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-14 13:11:53,408 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-14 13:11:53,408 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-12-14 13:11:53,408 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-12-14 13:11:53,409 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (1/1) ...
[2022-12-14 13:11:53,414 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-14 13:11:53,423 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/z3
[2022-12-14 13:11:53,435 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-14 13:11:53,437 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_949e4128-b609-4453-beb4-8d963d089346/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-14 13:11:53,467 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-14 13:11:53,467 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-14 13:11:53,467 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-14 13:11:53,467 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-14 13:11:53,579 INFO  L235             CfgBuilder]: Building ICFG
[2022-12-14 13:11:53,581 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-14 13:12:25,471 INFO  L276             CfgBuilder]: Performing block encoding
[2022-12-14 13:12:26,373 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-14 13:12:26,373 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2022-12-14 13:12:26,381 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:12:26 BoogieIcfgContainer
[2022-12-14 13:12:26,381 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-14 13:12:26,383 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-14 13:12:26,383 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-12-14 13:12:26,385 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-12-14 13:12:26,385 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:11:33" (1/3) ...
[2022-12-14 13:12:26,386 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233d938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:12:26, skipping insertion in model container
[2022-12-14 13:12:26,386 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:11:50" (2/3) ...
[2022-12-14 13:12:26,386 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233d938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:12:26, skipping insertion in model container
[2022-12-14 13:12:26,386 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:12:26" (3/3) ...
[2022-12-14 13:12:26,387 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem101_label20.c
[2022-12-14 13:12:26,400 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-14 13:12:26,400 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-12-14 13:12:26,523 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-14 13:12:26,528 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;@50693fb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-12-14 13:12:26,528 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-12-14 13:12:26,551 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:12:27,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10086
[2022-12-14 13:12:27,129 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:12:27,133 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 13:12:27,134 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:12:27,137 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:12:27,141 INFO  L85        PathProgramCache]: Analyzing trace with hash 425041903, now seen corresponding path program 1 times
[2022-12-14 13:12:27,147 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:12:27,148 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335424924]
[2022-12-14 13:12:27,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:12:27,150 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:12:29,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:12:55,129 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 13:12:55,130 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:12:55,130 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335424924]
[2022-12-14 13:12:55,130 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335424924] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:12:55,131 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:12:55,131 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:12:55,133 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268381953]
[2022-12-14 13:12:55,133 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:12:55,142 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:12:55,143 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:12:55,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:12:55,170 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:12:55,187 INFO  L87              Difference]: Start difference. First operand  has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:13:22,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:13:22,394 INFO  L93              Difference]: Finished difference Result 30401 states and 60647 transitions.
[2022-12-14 13:13:22,395 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:13:22,398 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10085
[2022-12-14 13:13:22,412 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:13:22,466 INFO  L225             Difference]: With dead ends: 30401
[2022-12-14 13:13:22,466 INFO  L226             Difference]: Without dead ends: 20263
[2022-12-14 13:13:22,477 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
[2022-12-14 13:13:22,480 INFO  L413           NwaCegarLoop]: 4811 mSDtfsCounter, 3051 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29400 mSolverCounterSat, 11205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 40605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11205 IncrementalHoareTripleChecker+Valid, 29400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time
[2022-12-14 13:13:22,480 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 4861 Invalid, 40605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11205 Valid, 29400 Invalid, 0 Unknown, 0 Unchecked, 26.7s Time]
[2022-12-14 13:13:22,513 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20263 states.
[2022-12-14 13:13:22,767 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263.
[2022-12-14 13:13:22,794 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20263 states, 20262 states have (on average 1.7607837330964367) internal successors, (35677), 20262 states have internal predecessors, (35677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:13:22,829 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 35677 transitions.
[2022-12-14 13:13:22,830 INFO  L78                 Accepts]: Start accepts. Automaton has 20263 states and 35677 transitions. Word has length 10085
[2022-12-14 13:13:22,840 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:13:22,840 INFO  L495      AbstractCegarLoop]: Abstraction has 20263 states and 35677 transitions.
[2022-12-14 13:13:22,842 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:13:22,842 INFO  L276                IsEmpty]: Start isEmpty. Operand 20263 states and 35677 transitions.
[2022-12-14 13:13:23,435 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10092
[2022-12-14 13:13:23,435 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:13:23,438 INFO  L195           NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 13:13:23,438 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-14 13:13:23,439 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:13:23,439 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:13:23,442 INFO  L85        PathProgramCache]: Analyzing trace with hash 2053142514, now seen corresponding path program 1 times
[2022-12-14 13:13:23,442 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:13:23,443 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913965529]
[2022-12-14 13:13:23,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:13:23,444 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:13:24,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:13:45,665 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 13:13:45,666 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:13:45,666 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913965529]
[2022-12-14 13:13:45,666 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913965529] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:13:45,666 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:13:45,667 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:13:45,668 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082138597]
[2022-12-14 13:13:45,668 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:13:45,678 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:13:45,679 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:13:45,686 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:13:45,686 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:13:45,690 INFO  L87              Difference]: Start difference. First operand 20263 states and 35677 transitions. Second operand  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:14:13,402 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:14:13,402 INFO  L93              Difference]: Finished difference Result 60785 states and 107028 transitions.
[2022-12-14 13:14:13,402 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:14:13,404 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10091
[2022-12-14 13:14:13,405 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:14:13,486 INFO  L225             Difference]: With dead ends: 60785
[2022-12-14 13:14:13,486 INFO  L226             Difference]: Without dead ends: 40523
[2022-12-14 13:14:13,509 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
[2022-12-14 13:14:13,510 INFO  L413           NwaCegarLoop]: 4816 mSDtfsCounter, 13625 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28708 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13625 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 40385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time
[2022-12-14 13:14:13,511 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13625 Valid, 4864 Invalid, 40385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28708 Invalid, 0 Unknown, 0 Unchecked, 27.1s Time]
[2022-12-14 13:14:13,556 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40523 states.
[2022-12-14 13:14:13,935 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40523 to 40523.
[2022-12-14 13:14:13,966 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40523 states, 40522 states have (on average 1.5819554809732985) internal successors, (64104), 40522 states have internal predecessors, (64104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:14:14,014 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 64104 transitions.
[2022-12-14 13:14:14,014 INFO  L78                 Accepts]: Start accepts. Automaton has 40523 states and 64104 transitions. Word has length 10091
[2022-12-14 13:14:14,015 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:14:14,015 INFO  L495      AbstractCegarLoop]: Abstraction has 40523 states and 64104 transitions.
[2022-12-14 13:14:14,017 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.6666666666665) internal successors, (10091), 2 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:14:14,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 40523 states and 64104 transitions.
[2022-12-14 13:14:14,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10120
[2022-12-14 13:14:14,590 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:14:14,593 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 13:14:14,593 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-14 13:14:14,593 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:14:14,593 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:14:14,596 INFO  L85        PathProgramCache]: Analyzing trace with hash 1773004766, now seen corresponding path program 1 times
[2022-12-14 13:14:14,596 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:14:14,596 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134126372]
[2022-12-14 13:14:14,597 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:14:14,597 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:14:15,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:14:41,281 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-12-14 13:14:41,281 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:14:41,281 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134126372]
[2022-12-14 13:14:41,281 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134126372] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:14:41,281 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:14:41,282 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:14:41,282 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591262918]
[2022-12-14 13:14:41,282 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:14:41,290 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:14:41,290 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:14:41,298 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:14:41,298 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:14:41,301 INFO  L87              Difference]: Start difference. First operand 40523 states and 64104 transitions. Second operand  has 3 states, 3 states have (on average 3371.3333333333335) internal successors, (10114), 2 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:15:12,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:15:12,487 INFO  L93              Difference]: Finished difference Result 121565 states and 192309 transitions.
[2022-12-14 13:15:12,488 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:15:12,490 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3371.3333333333335) internal successors, (10114), 2 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10119
[2022-12-14 13:15:12,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:15:12,576 INFO  L225             Difference]: With dead ends: 121565
[2022-12-14 13:15:12,576 INFO  L226             Difference]: Without dead ends: 81043
[2022-12-14 13:15:12,602 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
[2022-12-14 13:15:12,603 INFO  L413           NwaCegarLoop]: 9506 mSDtfsCounter, 10182 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32436 mSolverCounterSat, 9364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10182 SdHoareTripleChecker+Valid, 9555 SdHoareTripleChecker+Invalid, 41800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9364 IncrementalHoareTripleChecker+Valid, 32436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time
[2022-12-14 13:15:12,604 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10182 Valid, 9555 Invalid, 41800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9364 Valid, 32436 Invalid, 0 Unknown, 0 Unchecked, 30.5s Time]
[2022-12-14 13:15:12,656 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81043 states.
[2022-12-14 13:15:13,284 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 81043.
[2022-12-14 13:15:13,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81043 states, 81042 states have (on average 1.360726536857432) internal successors, (110276), 81042 states have internal predecessors, (110276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:15:13,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81043 states to 81043 states and 110276 transitions.
[2022-12-14 13:15:13,423 INFO  L78                 Accepts]: Start accepts. Automaton has 81043 states and 110276 transitions. Word has length 10119
[2022-12-14 13:15:13,424 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:15:13,424 INFO  L495      AbstractCegarLoop]: Abstraction has 81043 states and 110276 transitions.
[2022-12-14 13:15:13,425 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3371.3333333333335) internal successors, (10114), 2 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:15:13,425 INFO  L276                IsEmpty]: Start isEmpty. Operand 81043 states and 110276 transitions.
[2022-12-14 13:15:14,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10123
[2022-12-14 13:15:14,067 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:15:14,069 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 13:15:14,069 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-14 13:15:14,070 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:15:14,070 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:15:14,072 INFO  L85        PathProgramCache]: Analyzing trace with hash -755451319, now seen corresponding path program 1 times
[2022-12-14 13:15:14,072 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:15:14,072 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865871351]
[2022-12-14 13:15:14,073 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:15:14,073 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:15:15,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:15:36,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 13:15:36,618 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:15:36,618 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865871351]
[2022-12-14 13:15:36,618 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865871351] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:15:36,619 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:15:36,619 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:15:36,619 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141296977]
[2022-12-14 13:15:36,619 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:15:36,624 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:15:36,624 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:15:36,628 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:15:36,628 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:15:36,630 INFO  L87              Difference]: Start difference. First operand 81043 states and 110276 transitions. Second operand  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:16:09,448 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:16:09,448 INFO  L93              Difference]: Finished difference Result 243125 states and 330825 transitions.
[2022-12-14 13:16:09,448 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:16:09,450 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10122
[2022-12-14 13:16:09,450 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:16:09,600 INFO  L225             Difference]: With dead ends: 243125
[2022-12-14 13:16:09,600 INFO  L226             Difference]: Without dead ends: 162083
[2022-12-14 13:16:09,625 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
[2022-12-14 13:16:09,625 INFO  L413           NwaCegarLoop]: 7742 mSDtfsCounter, 12028 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27709 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12028 SdHoareTripleChecker+Valid, 7790 SdHoareTripleChecker+Invalid, 40739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time
[2022-12-14 13:16:09,626 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12028 Valid, 7790 Invalid, 40739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27709 Invalid, 0 Unknown, 0 Unchecked, 31.8s Time]
[2022-12-14 13:16:09,708 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162083 states.
[2022-12-14 13:16:10,828 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162083 to 162083.
[2022-12-14 13:16:10,930 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 162083 states, 162082 states have (on average 1.260004195407263) internal successors, (204224), 162082 states have internal predecessors, (204224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:16:11,102 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162083 states to 162083 states and 204224 transitions.
[2022-12-14 13:16:11,102 INFO  L78                 Accepts]: Start accepts. Automaton has 162083 states and 204224 transitions. Word has length 10122
[2022-12-14 13:16:11,103 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:16:11,103 INFO  L495      AbstractCegarLoop]: Abstraction has 162083 states and 204224 transitions.
[2022-12-14 13:16:11,105 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3374.0) internal successors, (10122), 2 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:16:11,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 162083 states and 204224 transitions.
[2022-12-14 13:16:12,049 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10155
[2022-12-14 13:16:12,049 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:16:12,052 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 13:16:12,052 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-12-14 13:16:12,052 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:16:12,052 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:16:12,055 INFO  L85        PathProgramCache]: Analyzing trace with hash 1621212665, now seen corresponding path program 1 times
[2022-12-14 13:16:12,055 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:16:12,055 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787823216]
[2022-12-14 13:16:12,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:16:12,056 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:16:13,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:16:32,223 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 13:16:32,223 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:16:32,223 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787823216]
[2022-12-14 13:16:32,223 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787823216] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:16:32,223 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:16:32,224 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:16:32,224 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259005302]
[2022-12-14 13:16:32,224 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:16:32,229 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:16:32,229 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:16:32,233 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:16:32,233 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:16:32,235 INFO  L87              Difference]: Start difference. First operand 162083 states and 204224 transitions. Second operand  has 3 states, 3 states have (on average 3384.6666666666665) internal successors, (10154), 2 states have internal predecessors, (10154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:17:03,207 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:17:03,207 INFO  L93              Difference]: Finished difference Result 486245 states and 612669 transitions.
[2022-12-14 13:17:03,207 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:17:03,209 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3384.6666666666665) internal successors, (10154), 2 states have internal predecessors, (10154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10154
[2022-12-14 13:17:03,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:17:03,567 INFO  L225             Difference]: With dead ends: 486245
[2022-12-14 13:17:03,567 INFO  L226             Difference]: Without dead ends: 324163
[2022-12-14 13:17:03,629 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
[2022-12-14 13:17:03,630 INFO  L413           NwaCegarLoop]: 6785 mSDtfsCounter, 12347 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29149 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12347 SdHoareTripleChecker+Valid, 6833 SdHoareTripleChecker+Invalid, 40904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time
[2022-12-14 13:17:03,631 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12347 Valid, 6833 Invalid, 40904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29149 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time]
[2022-12-14 13:17:03,826 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 324163 states.
[2022-12-14 13:17:06,654 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 324163 to 324163.
[2022-12-14 13:17:06,777 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 324163 states, 324162 states have (on average 1.1973149227855209) internal successors, (388124), 324162 states have internal predecessors, (388124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:17:07,207 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 324163 states to 324163 states and 388124 transitions.
[2022-12-14 13:17:07,207 INFO  L78                 Accepts]: Start accepts. Automaton has 324163 states and 388124 transitions. Word has length 10154
[2022-12-14 13:17:07,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:17:07,208 INFO  L495      AbstractCegarLoop]: Abstraction has 324163 states and 388124 transitions.
[2022-12-14 13:17:07,210 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3384.6666666666665) internal successors, (10154), 2 states have internal predecessors, (10154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:17:07,210 INFO  L276                IsEmpty]: Start isEmpty. Operand 324163 states and 388124 transitions.
[2022-12-14 13:17:08,072 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10273
[2022-12-14 13:17:08,073 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:17:08,075 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2022-12-14 13:17:08,075 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-14 13:17:08,075 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:17:08,075 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:17:08,077 INFO  L85        PathProgramCache]: Analyzing trace with hash -650961518, now seen corresponding path program 1 times
[2022-12-14 13:17:08,077 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:17:08,078 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134801035]
[2022-12-14 13:17:08,078 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:17:08,078 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:17:09,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:17:29,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-14 13:17:29,737 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:17:29,737 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134801035]
[2022-12-14 13:17:29,738 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134801035] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:17:29,738 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:17:29,739 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:17:29,739 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21427544]
[2022-12-14 13:17:29,739 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:17:29,747 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:17:29,747 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:17:29,754 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:17:29,755 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:17:29,758 INFO  L87              Difference]: Start difference. First operand 324163 states and 388124 transitions. Second operand  has 3 states, 3 states have (on average 3424.0) internal successors, (10272), 2 states have internal predecessors, (10272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:18:02,588 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:18:02,588 INFO  L93              Difference]: Finished difference Result 972485 states and 1164369 transitions.
[2022-12-14 13:18:02,589 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:18:02,590 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3424.0) internal successors, (10272), 2 states have internal predecessors, (10272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10272
[2022-12-14 13:18:02,591 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:18:03,325 INFO  L225             Difference]: With dead ends: 972485
[2022-12-14 13:18:03,325 INFO  L226             Difference]: Without dead ends: 648323
[2022-12-14 13:18:03,461 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
[2022-12-14 13:18:03,462 INFO  L413           NwaCegarLoop]: 8997 mSDtfsCounter, 10689 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 31560 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10689 SdHoareTripleChecker+Valid, 9045 SdHoareTripleChecker+Invalid, 42061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time
[2022-12-14 13:18:03,462 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10689 Valid, 9045 Invalid, 42061 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31560 Invalid, 0 Unknown, 0 Unchecked, 30.0s Time]
[2022-12-14 13:18:04,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 648323 states.
[2022-12-14 13:18:09,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 648323 to 648323.
[2022-12-14 13:18:09,394 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 648323 states, 648322 states have (on average 1.1502833468554206) internal successors, (745754), 648322 states have internal predecessors, (745754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:18:10,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 648323 states to 648323 states and 745754 transitions.
[2022-12-14 13:18:10,340 INFO  L78                 Accepts]: Start accepts. Automaton has 648323 states and 745754 transitions. Word has length 10272
[2022-12-14 13:18:10,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:18:10,341 INFO  L495      AbstractCegarLoop]: Abstraction has 648323 states and 745754 transitions.
[2022-12-14 13:18:10,342 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3424.0) internal successors, (10272), 2 states have internal predecessors, (10272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:18:10,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 648323 states and 745754 transitions.
[2022-12-14 13:18:11,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10642
[2022-12-14 13:18:11,562 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:18:11,564 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-14 13:18:11,565 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-14 13:18:11,565 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:18:11,565 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:18:11,567 INFO  L85        PathProgramCache]: Analyzing trace with hash -1487314936, now seen corresponding path program 1 times
[2022-12-14 13:18:11,567 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:18:11,567 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006683751]
[2022-12-14 13:18:11,569 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:18:11,569 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:18:12,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:18:34,596 INFO  L134       CoverageAnalysis]: Checked inductivity of 636 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-12-14 13:18:34,597 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:18:34,597 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006683751]
[2022-12-14 13:18:34,600 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006683751] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:18:34,600 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:18:34,602 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:18:34,602 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35562873]
[2022-12-14 13:18:34,602 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:18:34,612 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:18:34,612 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:18:34,623 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:18:34,624 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:18:34,627 INFO  L87              Difference]: Start difference. First operand 648323 states and 745754 transitions. Second operand  has 3 states, 3 states have (on average 3519.3333333333335) internal successors, (10558), 2 states have internal predecessors, (10558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:19:09,922 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:19:09,922 INFO  L93              Difference]: Finished difference Result 1944965 states and 2237259 transitions.
[2022-12-14 13:19:09,923 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:19:09,924 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3519.3333333333335) internal successors, (10558), 2 states have internal predecessors, (10558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10641
[2022-12-14 13:19:09,924 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:19:11,412 INFO  L225             Difference]: With dead ends: 1944965
[2022-12-14 13:19:11,412 INFO  L226             Difference]: Without dead ends: 1296643
[2022-12-14 13:19:11,646 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
[2022-12-14 13:19:11,646 INFO  L413           NwaCegarLoop]: 5999 mSDtfsCounter, 12063 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29744 mSolverCounterSat, 11034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12063 SdHoareTripleChecker+Valid, 6047 SdHoareTripleChecker+Invalid, 40778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11034 IncrementalHoareTripleChecker+Valid, 29744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time
[2022-12-14 13:19:11,647 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12063 Valid, 6047 Invalid, 40778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11034 Valid, 29744 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time]
[2022-12-14 13:19:12,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1296643 states.
[2022-12-14 13:19:22,912 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296643 to 1296643.
[2022-12-14 13:19:23,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1296643 states, 1296642 states have (on average 1.1119877344710414) internal successors, (1441850), 1296642 states have internal predecessors, (1441850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:19:25,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1296643 states to 1296643 states and 1441850 transitions.
[2022-12-14 13:19:25,696 INFO  L78                 Accepts]: Start accepts. Automaton has 1296643 states and 1441850 transitions. Word has length 10641
[2022-12-14 13:19:25,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-12-14 13:19:25,697 INFO  L495      AbstractCegarLoop]: Abstraction has 1296643 states and 1441850 transitions.
[2022-12-14 13:19:25,698 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3519.3333333333335) internal successors, (10558), 2 states have internal predecessors, (10558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:19:25,699 INFO  L276                IsEmpty]: Start isEmpty. Operand 1296643 states and 1441850 transitions.
[2022-12-14 13:19:27,895 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11131
[2022-12-14 13:19:27,895 INFO  L187           NwaCegarLoop]: Found error trace
[2022-12-14 13:19:27,897 INFO  L195           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2022-12-14 13:19:27,898 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-14 13:19:27,898 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-12-14 13:19:27,898 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-12-14 13:19:27,899 INFO  L85        PathProgramCache]: Analyzing trace with hash -529850349, now seen corresponding path program 1 times
[2022-12-14 13:19:27,899 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-12-14 13:19:27,899 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649209879]
[2022-12-14 13:19:27,900 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-14 13:19:27,900 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-14 13:19:29,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-14 13:19:56,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 1355 backedges. 1038 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked.
[2022-12-14 13:19:56,162 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-12-14 13:19:56,163 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649209879]
[2022-12-14 13:19:56,163 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649209879] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-14 13:19:56,163 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-14 13:19:56,164 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-14 13:19:56,164 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344615944]
[2022-12-14 13:19:56,164 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-14 13:19:56,168 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-14 13:19:56,168 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-12-14 13:19:56,173 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-14 13:19:56,173 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-14 13:19:56,175 INFO  L87              Difference]: Start difference. First operand 1296643 states and 1441850 transitions. Second operand  has 3 states, 3 states have (on average 3618.6666666666665) internal successors, (10856), 2 states have internal predecessors, (10856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-12-14 13:20:38,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-14 13:20:38,205 INFO  L93              Difference]: Finished difference Result 3859535 states and 4291869 transitions.
[2022-12-14 13:20:38,206 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-12-14 13:20:38,208 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3618.6666666666665) internal successors, (10856), 2 states have internal predecessors, (10856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11130
[2022-12-14 13:20:38,208 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-14 13:20:41,732 INFO  L225             Difference]: With dead ends: 3859535
[2022-12-14 13:20:41,732 INFO  L226             Difference]: Without dead ends: 2562893
[2022-12-14 13:20:42,197 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
[2022-12-14 13:20:42,198 INFO  L413           NwaCegarLoop]: 5906 mSDtfsCounter, 9622 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31675 mSolverCounterSat, 11564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9622 SdHoareTripleChecker+Valid, 5955 SdHoareTripleChecker+Invalid, 43239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11564 IncrementalHoareTripleChecker+Valid, 31675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time
[2022-12-14 13:20:42,198 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9622 Valid, 5955 Invalid, 43239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11564 Valid, 31675 Invalid, 0 Unknown, 0 Unchecked, 32.0s Time]
[2022-12-14 13:20:44,396 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2562893 states.