./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P --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 1bc6aa00437fa9caa5f3417d996588d430ef5fa0daab57def01c3e44b34b1cac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:37:25,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:37:25,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:37:25,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:37:25,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:37:25,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:37:25,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:37:25,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:37:25,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:37:25,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:37:25,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:37:25,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:37:25,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:37:25,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:37:25,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:37:25,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:37:25,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:37:25,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:37:25,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:37:25,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:37:25,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:37:25,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:37:25,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:37:25,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:37:25,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:37:25,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:37:25,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:37:25,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:37:25,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:37:25,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:37:26,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:37:26,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:37:26,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:37:26,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:37:26,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:37:26,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:37:26,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:37:26,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:37:26,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:37:26,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:37:26,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:37:26,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:37:26,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:37:26,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:37:26,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:37:26,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:37:26,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:37:26,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:37:26,065 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:37:26,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:37:26,065 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:37:26,065 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:37:26,067 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:37:26,067 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:37:26,067 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:37:26,067 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:37:26,068 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:37:26,068 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:37:26,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:37:26,068 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:37:26,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:37:26,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:37:26,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:37:26,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:37:26,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:37:26,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:37:26,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:37:26,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:37:26,073 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:37:26,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:37:26,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:37:26,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:37:26,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:37:26,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:37:26,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:37:26,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:37:26,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:37:26,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:37:26,076 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:37:26,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:37:26,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:37:26,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:37:26,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:37:26,077 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bc6aa00437fa9caa5f3417d996588d430ef5fa0daab57def01c3e44b34b1cac [2021-11-21 00:37:26,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:37:26,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:37:26,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:37:26,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:37:26,346 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:37:26,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-21 00:37:26,418 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/data/7ad7af37a/afa288863df047c4947ccd7f32dfe57b/FLAGd9981f468 [2021-11-21 00:37:27,056 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:37:27,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-21 00:37:27,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/data/7ad7af37a/afa288863df047c4947ccd7f32dfe57b/FLAGd9981f468 [2021-11-21 00:37:27,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/data/7ad7af37a/afa288863df047c4947ccd7f32dfe57b [2021-11-21 00:37:27,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:37:27,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:37:27,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:37:27,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:37:27,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:37:27,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:37:27" (1/1) ... [2021-11-21 00:37:27,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed36a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:27, skipping insertion in model container [2021-11-21 00:37:27,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:37:27" (1/1) ... [2021-11-21 00:37:27,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:37:27,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:37:27,758 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14164,14177] [2021-11-21 00:37:27,772 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14811,14824] [2021-11-21 00:37:27,792 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16044,16057] [2021-11-21 00:37:27,806 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17104,17117] [2021-11-21 00:37:27,899 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25495,25508] [2021-11-21 00:37:28,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:37:28,023 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:37:28,264 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14164,14177] [2021-11-21 00:37:28,284 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14811,14824] [2021-11-21 00:37:28,314 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16044,16057] [2021-11-21 00:37:28,337 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17104,17117] [2021-11-21 00:37:28,387 WARN L230 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_6e9481f9-2843-42cb-ba4d-6a9218438c98/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25495,25508] [2021-11-21 00:37:28,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:37:28,451 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:37:28,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28 WrapperNode [2021-11-21 00:37:28,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:37:28,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:37:28,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:37:28,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:37:28,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,579 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1558 [2021-11-21 00:37:28,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:37:28,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:37:28,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:37:28,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:37:28,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:37:28,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:37:28,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:37:28,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:37:28,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (1/1) ... [2021-11-21 00:37:28,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:37:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:37:28,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:37:28,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e9481f9-2843-42cb-ba4d-6a9218438c98/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:37:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:37:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:37:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:37:28,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:37:28,900 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:37:28,902 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:37:29,994 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:37:30,468 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:37:30,468 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:37:30,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:37:30 BoogieIcfgContainer [2021-11-21 00:37:30,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:37:30,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:37:30,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:37:30,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:37:30,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:37:27" (1/3) ... [2021-11-21 00:37:30,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689a133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:37:30, skipping insertion in model container [2021-11-21 00:37:30,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:37:28" (2/3) ... [2021-11-21 00:37:30,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689a133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:37:30, skipping insertion in model container [2021-11-21 00:37:30,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:37:30" (3/3) ... [2021-11-21 00:37:30,483 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-21 00:37:30,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:37:30,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-21 00:37:30,546 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:37:30,553 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:37:30,553 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-21 00:37:30,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 280 states have (on average 1.7964285714285715) internal successors, (503), 285 states have internal predecessors, (503), 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) [2021-11-21 00:37:30,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-21 00:37:30,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:30,592 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:30,593 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash 693386370, now seen corresponding path program 1 times [2021-11-21 00:37:30,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:30,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506146279] [2021-11-21 00:37:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:30,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:31,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:31,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506146279] [2021-11-21 00:37:31,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506146279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:31,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:31,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:37:31,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312535913] [2021-11-21 00:37:31,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:31,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:37:31,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:37:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:31,542 INFO L87 Difference]: Start difference. First operand has 286 states, 280 states have (on average 1.7964285714285715) internal successors, (503), 285 states have internal predecessors, (503), 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 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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) [2021-11-21 00:37:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:31,989 INFO L93 Difference]: Finished difference Result 794 states and 1367 transitions. [2021-11-21 00:37:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:37:31,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 114 [2021-11-21 00:37:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:32,018 INFO L225 Difference]: With dead ends: 794 [2021-11-21 00:37:32,019 INFO L226 Difference]: Without dead ends: 602 [2021-11-21 00:37:32,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:32,037 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 1236 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:32,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 1220 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:37:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-21 00:37:32,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 561. [2021-11-21 00:37:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 556 states have (on average 1.3758992805755397) internal successors, (765), 560 states have internal predecessors, (765), 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) [2021-11-21 00:37:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 765 transitions. [2021-11-21 00:37:32,155 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 765 transitions. Word has length 114 [2021-11-21 00:37:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:32,156 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 765 transitions. [2021-11-21 00:37:32,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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) [2021-11-21 00:37:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 765 transitions. [2021-11-21 00:37:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-21 00:37:32,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:32,171 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:32,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:37:32,173 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:32,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:32,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1420466989, now seen corresponding path program 1 times [2021-11-21 00:37:32,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:32,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531832222] [2021-11-21 00:37:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:32,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:32,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:32,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531832222] [2021-11-21 00:37:32,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531832222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:32,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:32,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:37:32,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722815124] [2021-11-21 00:37:32,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:32,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:37:32,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:32,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:37:32,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:32,550 INFO L87 Difference]: Start difference. First operand 561 states and 765 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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) [2021-11-21 00:37:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:32,730 INFO L93 Difference]: Finished difference Result 1531 states and 2097 transitions. [2021-11-21 00:37:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:37:32,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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 114 [2021-11-21 00:37:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:32,739 INFO L225 Difference]: With dead ends: 1531 [2021-11-21 00:37:32,739 INFO L226 Difference]: Without dead ends: 1043 [2021-11-21 00:37:32,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:32,749 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 952 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:32,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 650 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:37:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-21 00:37:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1019. [2021-11-21 00:37:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1014 states have (on average 1.378698224852071) internal successors, (1398), 1018 states have internal predecessors, (1398), 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) [2021-11-21 00:37:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1398 transitions. [2021-11-21 00:37:32,867 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1398 transitions. Word has length 114 [2021-11-21 00:37:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:32,874 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1398 transitions. [2021-11-21 00:37:32,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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) [2021-11-21 00:37:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1398 transitions. [2021-11-21 00:37:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-21 00:37:32,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:32,881 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:32,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:37:32,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:32,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:32,882 INFO L85 PathProgramCache]: Analyzing trace with hash 80230183, now seen corresponding path program 1 times [2021-11-21 00:37:32,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:32,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34258083] [2021-11-21 00:37:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:32,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:33,184 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:33,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34258083] [2021-11-21 00:37:33,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34258083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:33,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:33,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:37:33,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538077489] [2021-11-21 00:37:33,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:33,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:37:33,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:37:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:33,192 INFO L87 Difference]: Start difference. First operand 1019 states and 1398 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-21 00:37:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:33,382 INFO L93 Difference]: Finished difference Result 1977 states and 2746 transitions. [2021-11-21 00:37:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:37:33,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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 120 [2021-11-21 00:37:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:33,390 INFO L225 Difference]: With dead ends: 1977 [2021-11-21 00:37:33,390 INFO L226 Difference]: Without dead ends: 1227 [2021-11-21 00:37:33,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:33,394 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1590 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:33,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 650 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:37:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-11-21 00:37:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1206. [2021-11-21 00:37:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1201 states have (on average 1.3905079100749376) internal successors, (1670), 1205 states have internal predecessors, (1670), 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) [2021-11-21 00:37:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1670 transitions. [2021-11-21 00:37:33,511 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1670 transitions. Word has length 120 [2021-11-21 00:37:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:33,513 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1670 transitions. [2021-11-21 00:37:33,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-21 00:37:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1670 transitions. [2021-11-21 00:37:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-21 00:37:33,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:33,516 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:33,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:37:33,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:33,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1732764127, now seen corresponding path program 1 times [2021-11-21 00:37:33,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:33,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220168069] [2021-11-21 00:37:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:33,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:33,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:33,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220168069] [2021-11-21 00:37:33,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220168069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:33,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:33,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:37:33,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744111896] [2021-11-21 00:37:33,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:33,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:37:33,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:37:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:37:33,746 INFO L87 Difference]: Start difference. First operand 1206 states and 1670 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 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) [2021-11-21 00:37:34,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:34,512 INFO L93 Difference]: Finished difference Result 3102 states and 4346 transitions. [2021-11-21 00:37:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:37:34,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 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 126 [2021-11-21 00:37:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:34,527 INFO L225 Difference]: With dead ends: 3102 [2021-11-21 00:37:34,528 INFO L226 Difference]: Without dead ends: 2011 [2021-11-21 00:37:34,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:37:34,539 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 2357 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2357 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:34,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2357 Valid, 812 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:37:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2021-11-21 00:37:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1747. [2021-11-21 00:37:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1742 states have (on average 1.3639494833524684) internal successors, (2376), 1746 states have internal predecessors, (2376), 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) [2021-11-21 00:37:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2376 transitions. [2021-11-21 00:37:34,761 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2376 transitions. Word has length 126 [2021-11-21 00:37:34,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:34,763 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 2376 transitions. [2021-11-21 00:37:34,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 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) [2021-11-21 00:37:34,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2376 transitions. [2021-11-21 00:37:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-21 00:37:34,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:34,768 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:34,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:37:34,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash -194520636, now seen corresponding path program 1 times [2021-11-21 00:37:34,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:34,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793310769] [2021-11-21 00:37:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:34,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:35,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:35,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793310769] [2021-11-21 00:37:35,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793310769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:35,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:35,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:37:35,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639912418] [2021-11-21 00:37:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:35,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:37:35,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:37:35,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:35,090 INFO L87 Difference]: Start difference. First operand 1747 states and 2376 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-21 00:37:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:35,382 INFO L93 Difference]: Finished difference Result 2221 states and 2998 transitions. [2021-11-21 00:37:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:37:35,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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 126 [2021-11-21 00:37:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:35,397 INFO L225 Difference]: With dead ends: 2221 [2021-11-21 00:37:35,398 INFO L226 Difference]: Without dead ends: 1699 [2021-11-21 00:37:35,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:35,400 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 635 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:35,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 647 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:37:35,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2021-11-21 00:37:35,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1580. [2021-11-21 00:37:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1575 states have (on average 1.3346031746031746) internal successors, (2102), 1579 states have internal predecessors, (2102), 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) [2021-11-21 00:37:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2102 transitions. [2021-11-21 00:37:35,566 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2102 transitions. Word has length 126 [2021-11-21 00:37:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:35,567 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 2102 transitions. [2021-11-21 00:37:35,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-21 00:37:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2102 transitions. [2021-11-21 00:37:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-21 00:37:35,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:35,571 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:35,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:37:35,571 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:35,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1070952514, now seen corresponding path program 1 times [2021-11-21 00:37:35,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:35,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776922302] [2021-11-21 00:37:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:35,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:35,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:35,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776922302] [2021-11-21 00:37:35,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776922302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:35,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:35,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:37:35,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181153120] [2021-11-21 00:37:35,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:35,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:37:35,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:37:35,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:35,849 INFO L87 Difference]: Start difference. First operand 1580 states and 2102 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-21 00:37:36,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:36,171 INFO L93 Difference]: Finished difference Result 2600 states and 3500 transitions. [2021-11-21 00:37:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:37:36,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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 126 [2021-11-21 00:37:36,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:36,181 INFO L225 Difference]: With dead ends: 2600 [2021-11-21 00:37:36,181 INFO L226 Difference]: Without dead ends: 1611 [2021-11-21 00:37:36,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:37:36,185 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 1458 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:36,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 660 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:37:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-11-21 00:37:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1582. [2021-11-21 00:37:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1577 states have (on average 1.3341788205453393) internal successors, (2104), 1581 states have internal predecessors, (2104), 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) [2021-11-21 00:37:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2104 transitions. [2021-11-21 00:37:36,346 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2104 transitions. Word has length 126 [2021-11-21 00:37:36,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:36,347 INFO L470 AbstractCegarLoop]: Abstraction has 1582 states and 2104 transitions. [2021-11-21 00:37:36,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-21 00:37:36,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2104 transitions. [2021-11-21 00:37:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-21 00:37:36,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:36,350 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:36,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:37:36,351 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1224993627, now seen corresponding path program 1 times [2021-11-21 00:37:36,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:36,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903573268] [2021-11-21 00:37:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:36,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:36,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:36,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903573268] [2021-11-21 00:37:36,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903573268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:36,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:36,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:37:36,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837012234] [2021-11-21 00:37:36,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:36,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:37:36,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:37:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:37:36,537 INFO L87 Difference]: Start difference. First operand 1582 states and 2104 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2021-11-21 00:37:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:37,450 INFO L93 Difference]: Finished difference Result 4905 states and 6491 transitions. [2021-11-21 00:37:37,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:37:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 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 126 [2021-11-21 00:37:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:37,470 INFO L225 Difference]: With dead ends: 4905 [2021-11-21 00:37:37,470 INFO L226 Difference]: Without dead ends: 3361 [2021-11-21 00:37:37,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:37:37,477 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 2048 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:37,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 947 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:37:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-11-21 00:37:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 3319. [2021-11-21 00:37:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 3314 states have (on average 1.296318648159324) internal successors, (4296), 3318 states have internal predecessors, (4296), 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) [2021-11-21 00:37:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 4296 transitions. [2021-11-21 00:37:37,858 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 4296 transitions. Word has length 126 [2021-11-21 00:37:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:37,858 INFO L470 AbstractCegarLoop]: Abstraction has 3319 states and 4296 transitions. [2021-11-21 00:37:37,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2021-11-21 00:37:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 4296 transitions. [2021-11-21 00:37:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-21 00:37:37,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:37,863 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:37,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:37:37,864 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2115886912, now seen corresponding path program 1 times [2021-11-21 00:37:37,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:37,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658735141] [2021-11-21 00:37:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:37,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:38,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:38,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658735141] [2021-11-21 00:37:38,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658735141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:38,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:38,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:37:38,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291458830] [2021-11-21 00:37:38,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:38,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:37:38,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:38,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:37:38,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:38,114 INFO L87 Difference]: Start difference. First operand 3319 states and 4296 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-21 00:37:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:38,632 INFO L93 Difference]: Finished difference Result 6103 states and 8085 transitions. [2021-11-21 00:37:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:37:38,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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 126 [2021-11-21 00:37:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:38,653 INFO L225 Difference]: With dead ends: 6103 [2021-11-21 00:37:38,653 INFO L226 Difference]: Without dead ends: 3873 [2021-11-21 00:37:38,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:37:38,658 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 897 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:38,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 865 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:37:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2021-11-21 00:37:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3852. [2021-11-21 00:37:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3847 states have (on average 1.3030933194697167) internal successors, (5013), 3851 states have internal predecessors, (5013), 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) [2021-11-21 00:37:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5013 transitions. [2021-11-21 00:37:39,087 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5013 transitions. Word has length 126 [2021-11-21 00:37:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:39,088 INFO L470 AbstractCegarLoop]: Abstraction has 3852 states and 5013 transitions. [2021-11-21 00:37:39,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-21 00:37:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5013 transitions. [2021-11-21 00:37:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:37:39,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:39,094 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:39,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:37:39,095 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:39,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash -335447201, now seen corresponding path program 1 times [2021-11-21 00:37:39,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:39,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168812508] [2021-11-21 00:37:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:39,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:39,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:39,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168812508] [2021-11-21 00:37:39,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168812508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:39,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:39,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 00:37:39,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188140906] [2021-11-21 00:37:39,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:39,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:37:39,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:37:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:37:39,339 INFO L87 Difference]: Start difference. First operand 3852 states and 5013 transitions. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 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) [2021-11-21 00:37:40,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:40,454 INFO L93 Difference]: Finished difference Result 9323 states and 12235 transitions. [2021-11-21 00:37:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:37:40,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 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 132 [2021-11-21 00:37:40,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:40,486 INFO L225 Difference]: With dead ends: 9323 [2021-11-21 00:37:40,486 INFO L226 Difference]: Without dead ends: 5545 [2021-11-21 00:37:40,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:37:40,495 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 1826 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:40,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1826 Valid, 843 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:37:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2021-11-21 00:37:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 4042. [2021-11-21 00:37:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4042 states, 4037 states have (on average 1.231607629427793) internal successors, (4972), 4041 states have internal predecessors, (4972), 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) [2021-11-21 00:37:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4042 states to 4042 states and 4972 transitions. [2021-11-21 00:37:41,005 INFO L78 Accepts]: Start accepts. Automaton has 4042 states and 4972 transitions. Word has length 132 [2021-11-21 00:37:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:41,006 INFO L470 AbstractCegarLoop]: Abstraction has 4042 states and 4972 transitions. [2021-11-21 00:37:41,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 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) [2021-11-21 00:37:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4042 states and 4972 transitions. [2021-11-21 00:37:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:37:41,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:41,012 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:41,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:37:41,013 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:41,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1652902394, now seen corresponding path program 1 times [2021-11-21 00:37:41,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:41,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190450805] [2021-11-21 00:37:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:41,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:37:46,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:46,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190450805] [2021-11-21 00:37:46,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190450805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:46,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:46,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-11-21 00:37:46,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032824074] [2021-11-21 00:37:46,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:46,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-21 00:37:46,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-21 00:37:46,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2021-11-21 00:37:46,960 INFO L87 Difference]: Start difference. First operand 4042 states and 4972 transitions. Second operand has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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) [2021-11-21 00:37:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:54,870 INFO L93 Difference]: Finished difference Result 5668 states and 7223 transitions. [2021-11-21 00:37:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-21 00:37:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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 132 [2021-11-21 00:37:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:54,918 INFO L225 Difference]: With dead ends: 5668 [2021-11-21 00:37:54,919 INFO L226 Difference]: Without dead ends: 5249 [2021-11-21 00:37:54,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=521, Invalid=2901, Unknown=0, NotChecked=0, Total=3422 [2021-11-21 00:37:54,923 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1187 mSDsluCounter, 4230 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 4455 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:54,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 4455 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2113 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-21 00:37:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5249 states. [2021-11-21 00:37:55,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5249 to 4164. [2021-11-21 00:37:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 4159 states have (on average 1.2276989660976196) internal successors, (5106), 4163 states have internal predecessors, (5106), 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) [2021-11-21 00:37:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 5106 transitions. [2021-11-21 00:37:55,362 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 5106 transitions. Word has length 132 [2021-11-21 00:37:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:55,362 INFO L470 AbstractCegarLoop]: Abstraction has 4164 states and 5106 transitions. [2021-11-21 00:37:55,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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) [2021-11-21 00:37:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 5106 transitions. [2021-11-21 00:37:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:37:55,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:55,370 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:37:55,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:37:55,370 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:37:55,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash -460950965, now seen corresponding path program 1 times [2021-11-21 00:37:55,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:55,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718859595] [2021-11-21 00:37:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:55,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:38:01,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:01,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718859595] [2021-11-21 00:38:01,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718859595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:01,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:01,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-21 00:38:01,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125420334] [2021-11-21 00:38:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:01,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-21 00:38:01,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-21 00:38:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:38:01,288 INFO L87 Difference]: Start difference. First operand 4164 states and 5106 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 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) [2021-11-21 00:38:09,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:09,607 INFO L93 Difference]: Finished difference Result 4923 states and 6035 transitions. [2021-11-21 00:38:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-21 00:38:09,608 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 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 132 [2021-11-21 00:38:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:09,627 INFO L225 Difference]: With dead ends: 4923 [2021-11-21 00:38:09,627 INFO L226 Difference]: Without dead ends: 4654 [2021-11-21 00:38:09,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=465, Invalid=2505, Unknown=0, NotChecked=0, Total=2970 [2021-11-21 00:38:09,630 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1451 mSDsluCounter, 5985 mSDsCounter, 0 mSdLazyCounter, 2922 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 6232 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:09,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 6232 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2922 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-21 00:38:09,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2021-11-21 00:38:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4406. [2021-11-21 00:38:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4401 states have (on average 1.2281299704612587) internal successors, (5405), 4405 states have internal predecessors, (5405), 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) [2021-11-21 00:38:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 5405 transitions. [2021-11-21 00:38:10,048 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 5405 transitions. Word has length 132 [2021-11-21 00:38:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:10,049 INFO L470 AbstractCegarLoop]: Abstraction has 4406 states and 5405 transitions. [2021-11-21 00:38:10,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 33 states have internal predecessors, (132), 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) [2021-11-21 00:38:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 5405 transitions. [2021-11-21 00:38:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:38:10,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:10,056 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:38:10,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:38:10,056 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:38:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash 183447265, now seen corresponding path program 1 times [2021-11-21 00:38:10,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:10,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881425881] [2021-11-21 00:38:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:10,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:38:14,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:14,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881425881] [2021-11-21 00:38:14,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881425881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:14,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:14,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-11-21 00:38:14,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85692047] [2021-11-21 00:38:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:14,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-21 00:38:14,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:14,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-21 00:38:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2021-11-21 00:38:14,958 INFO L87 Difference]: Start difference. First operand 4406 states and 5405 transitions. Second operand has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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) [2021-11-21 00:38:21,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:21,864 INFO L93 Difference]: Finished difference Result 6082 states and 7780 transitions. [2021-11-21 00:38:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-21 00:38:21,865 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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 132 [2021-11-21 00:38:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:21,877 INFO L225 Difference]: With dead ends: 6082 [2021-11-21 00:38:21,877 INFO L226 Difference]: Without dead ends: 5878 [2021-11-21 00:38:21,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=458, Invalid=2734, Unknown=0, NotChecked=0, Total=3192 [2021-11-21 00:38:21,881 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 1547 mSDsluCounter, 6062 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:21,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 6251 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2655 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 00:38:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2021-11-21 00:38:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 4525. [2021-11-21 00:38:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 4520 states have (on average 1.2289823008849559) internal successors, (5555), 4524 states have internal predecessors, (5555), 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) [2021-11-21 00:38:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 5555 transitions. [2021-11-21 00:38:22,358 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 5555 transitions. Word has length 132 [2021-11-21 00:38:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:22,359 INFO L470 AbstractCegarLoop]: Abstraction has 4525 states and 5555 transitions. [2021-11-21 00:38:22,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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) [2021-11-21 00:38:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 5555 transitions. [2021-11-21 00:38:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:38:22,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:22,366 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:38:22,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:38:22,366 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:38:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash -478711012, now seen corresponding path program 1 times [2021-11-21 00:38:22,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:22,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361492092] [2021-11-21 00:38:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:22,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:38:22,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:22,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361492092] [2021-11-21 00:38:22,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361492092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:22,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:22,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:38:22,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381578588] [2021-11-21 00:38:22,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:22,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:38:22,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:38:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:38:22,447 INFO L87 Difference]: Start difference. First operand 4525 states and 5555 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-11-21 00:38:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:23,015 INFO L93 Difference]: Finished difference Result 5239 states and 6445 transitions. [2021-11-21 00:38:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:38:23,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2021-11-21 00:38:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:23,023 INFO L225 Difference]: With dead ends: 5239 [2021-11-21 00:38:23,024 INFO L226 Difference]: Without dead ends: 4546 [2021-11-21 00:38:23,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:38:23,028 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 239 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:23,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 649 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:38:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2021-11-21 00:38:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4525. [2021-11-21 00:38:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 4520 states have (on average 1.2219026548672567) internal successors, (5523), 4524 states have internal predecessors, (5523), 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) [2021-11-21 00:38:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 5523 transitions. [2021-11-21 00:38:23,668 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 5523 transitions. Word has length 132 [2021-11-21 00:38:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:23,669 INFO L470 AbstractCegarLoop]: Abstraction has 4525 states and 5523 transitions. [2021-11-21 00:38:23,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-11-21 00:38:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 5523 transitions. [2021-11-21 00:38:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:38:23,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:23,677 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:38:23,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:38:23,677 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:38:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1021357656, now seen corresponding path program 1 times [2021-11-21 00:38:23,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:23,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796156089] [2021-11-21 00:38:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:23,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:38:23,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:23,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796156089] [2021-11-21 00:38:23,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796156089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:23,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:23,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:38:23,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201011317] [2021-11-21 00:38:23,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:23,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:38:23,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:23,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:38:23,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:38:23,913 INFO L87 Difference]: Start difference. First operand 4525 states and 5523 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 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) [2021-11-21 00:38:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:24,366 INFO L93 Difference]: Finished difference Result 6438 states and 7981 transitions. [2021-11-21 00:38:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:38:24,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2021-11-21 00:38:24,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:24,377 INFO L225 Difference]: With dead ends: 6438 [2021-11-21 00:38:24,377 INFO L226 Difference]: Without dead ends: 4231 [2021-11-21 00:38:24,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:38:24,382 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 799 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:24,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 668 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:38:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2021-11-21 00:38:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4004. [2021-11-21 00:38:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 3999 states have (on average 1.2188047011752938) internal successors, (4874), 4003 states have internal predecessors, (4874), 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) [2021-11-21 00:38:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 4874 transitions. [2021-11-21 00:38:24,706 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 4874 transitions. Word has length 132 [2021-11-21 00:38:24,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:24,706 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 4874 transitions. [2021-11-21 00:38:24,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 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) [2021-11-21 00:38:24,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 4874 transitions. [2021-11-21 00:38:24,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:38:24,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:24,712 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:38:24,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:38:24,713 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:38:24,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:24,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1796484446, now seen corresponding path program 1 times [2021-11-21 00:38:24,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:24,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390356317] [2021-11-21 00:38:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:24,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:38:31,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:31,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390356317] [2021-11-21 00:38:31,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390356317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:31,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:31,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-21 00:38:31,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613303866] [2021-11-21 00:38:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:31,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-21 00:38:31,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:31,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-21 00:38:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 00:38:31,343 INFO L87 Difference]: Start difference. First operand 4004 states and 4874 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 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) [2021-11-21 00:38:41,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:41,833 INFO L93 Difference]: Finished difference Result 5534 states and 6925 transitions. [2021-11-21 00:38:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-21 00:38:41,833 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 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 132 [2021-11-21 00:38:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:41,843 INFO L225 Difference]: With dead ends: 5534 [2021-11-21 00:38:41,843 INFO L226 Difference]: Without dead ends: 5530 [2021-11-21 00:38:41,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=722, Invalid=4108, Unknown=0, NotChecked=0, Total=4830 [2021-11-21 00:38:41,847 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 1382 mSDsluCounter, 7169 mSDsCounter, 0 mSdLazyCounter, 3563 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 7452 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:41,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 7452 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3563 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-21 00:38:41,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-11-21 00:38:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 4146. [2021-11-21 00:38:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4146 states, 4141 states have (on average 1.215406906544313) internal successors, (5033), 4145 states have internal predecessors, (5033), 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) [2021-11-21 00:38:42,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 5033 transitions. [2021-11-21 00:38:42,299 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 5033 transitions. Word has length 132 [2021-11-21 00:38:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:42,299 INFO L470 AbstractCegarLoop]: Abstraction has 4146 states and 5033 transitions. [2021-11-21 00:38:42,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 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) [2021-11-21 00:38:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 5033 transitions. [2021-11-21 00:38:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:38:42,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:42,305 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:38:42,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:38:42,305 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:38:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash -317368913, now seen corresponding path program 1 times [2021-11-21 00:38:42,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:42,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031305061] [2021-11-21 00:38:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:42,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:38:46,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:46,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031305061] [2021-11-21 00:38:46,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031305061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:46,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:46,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-21 00:38:46,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938464554] [2021-11-21 00:38:46,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:46,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-21 00:38:46,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:46,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-21 00:38:46,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2021-11-21 00:38:46,480 INFO L87 Difference]: Start difference. First operand 4146 states and 5033 transitions. Second operand has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 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) [2021-11-21 00:38:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:53,674 INFO L93 Difference]: Finished difference Result 4839 states and 5844 transitions. [2021-11-21 00:38:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 00:38:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 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 132 [2021-11-21 00:38:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:53,683 INFO L225 Difference]: With dead ends: 4839 [2021-11-21 00:38:53,683 INFO L226 Difference]: Without dead ends: 4700 [2021-11-21 00:38:53,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=462, Invalid=2190, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 00:38:53,686 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 1079 mSDsluCounter, 6609 mSDsCounter, 0 mSdLazyCounter, 2731 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 6927 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:53,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 6927 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2731 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:38:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2021-11-21 00:38:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 4263. [2021-11-21 00:38:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4258 states have (on average 1.2113668388914984) internal successors, (5158), 4262 states have internal predecessors, (5158), 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) [2021-11-21 00:38:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 5158 transitions. [2021-11-21 00:38:54,197 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 5158 transitions. Word has length 132 [2021-11-21 00:38:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:54,198 INFO L470 AbstractCegarLoop]: Abstraction has 4263 states and 5158 transitions. [2021-11-21 00:38:54,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.125) internal successors, (132), 31 states have internal predecessors, (132), 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) [2021-11-21 00:38:54,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 5158 transitions. [2021-11-21 00:38:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 00:38:54,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:54,204 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:38:54,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:38:54,204 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:38:54,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:54,205 INFO L85 PathProgramCache]: Analyzing trace with hash 327029317, now seen corresponding path program 1 times [2021-11-21 00:38:54,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:54,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141943633] [2021-11-21 00:38:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:54,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:38:57,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:57,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141943633] [2021-11-21 00:38:57,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141943633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:57,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:57,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-11-21 00:38:57,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466988763] [2021-11-21 00:38:57,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:57,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-21 00:38:57,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:57,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-21 00:38:57,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2021-11-21 00:38:57,601 INFO L87 Difference]: Start difference. First operand 4263 states and 5158 transitions. Second operand has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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) [2021-11-21 00:39:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:04,825 INFO L93 Difference]: Finished difference Result 5528 states and 6913 transitions. [2021-11-21 00:39:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-21 00:39:04,826 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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 132 [2021-11-21 00:39:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:04,832 INFO L225 Difference]: With dead ends: 5528 [2021-11-21 00:39:04,832 INFO L226 Difference]: Without dead ends: 5524 [2021-11-21 00:39:04,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=468, Invalid=2724, Unknown=0, NotChecked=0, Total=3192 [2021-11-21 00:39:04,835 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 1039 mSDsluCounter, 7538 mSDsCounter, 0 mSdLazyCounter, 3449 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 7811 SdHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:04,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 7811 Invalid, 3478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3449 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:39:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2021-11-21 00:39:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 4401. [2021-11-21 00:39:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4396 states have (on average 1.2076888080072794) internal successors, (5309), 4400 states have internal predecessors, (5309), 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) [2021-11-21 00:39:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 5309 transitions. [2021-11-21 00:39:05,202 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 5309 transitions. Word has length 132 [2021-11-21 00:39:05,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:05,203 INFO L470 AbstractCegarLoop]: Abstraction has 4401 states and 5309 transitions. [2021-11-21 00:39:05,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.7714285714285714) internal successors, (132), 34 states have internal predecessors, (132), 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) [2021-11-21 00:39:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 5309 transitions. [2021-11-21 00:39:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 00:39:05,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:05,209 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:05,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:39:05,209 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:05,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:05,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1563355095, now seen corresponding path program 1 times [2021-11-21 00:39:05,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:05,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245244606] [2021-11-21 00:39:05,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:05,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:05,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:05,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245244606] [2021-11-21 00:39:05,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245244606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:05,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:05,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:05,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966040381] [2021-11-21 00:39:05,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:05,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:05,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:05,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:05,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:05,248 INFO L87 Difference]: Start difference. First operand 4401 states and 5309 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:05,847 INFO L93 Difference]: Finished difference Result 7512 states and 9174 transitions. [2021-11-21 00:39:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:05,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2021-11-21 00:39:05,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:05,852 INFO L225 Difference]: With dead ends: 7512 [2021-11-21 00:39:05,852 INFO L226 Difference]: Without dead ends: 4708 [2021-11-21 00:39:05,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:05,856 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 287 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:05,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 407 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:39:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2021-11-21 00:39:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4340. [2021-11-21 00:39:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4335 states have (on average 1.202076124567474) internal successors, (5211), 4339 states have internal predecessors, (5211), 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) [2021-11-21 00:39:06,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 5211 transitions. [2021-11-21 00:39:06,247 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 5211 transitions. Word has length 133 [2021-11-21 00:39:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:06,248 INFO L470 AbstractCegarLoop]: Abstraction has 4340 states and 5211 transitions. [2021-11-21 00:39:06,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 5211 transitions. [2021-11-21 00:39:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 00:39:06,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:06,253 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:06,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 00:39:06,253 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash 529612928, now seen corresponding path program 1 times [2021-11-21 00:39:06,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:06,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208478275] [2021-11-21 00:39:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:06,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:06,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:06,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208478275] [2021-11-21 00:39:06,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208478275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:06,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:06,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:06,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598391609] [2021-11-21 00:39:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:06,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:06,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:06,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:06,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:06,307 INFO L87 Difference]: Start difference. First operand 4340 states and 5211 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:06,914 INFO L93 Difference]: Finished difference Result 7203 states and 8741 transitions. [2021-11-21 00:39:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:06,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2021-11-21 00:39:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:06,919 INFO L225 Difference]: With dead ends: 7203 [2021-11-21 00:39:06,919 INFO L226 Difference]: Without dead ends: 4352 [2021-11-21 00:39:06,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:06,924 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 260 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:06,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 355 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:39:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2021-11-21 00:39:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 4152. [2021-11-21 00:39:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4147 states have (on average 1.1994212683867855) internal successors, (4974), 4151 states have internal predecessors, (4974), 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) [2021-11-21 00:39:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 4974 transitions. [2021-11-21 00:39:07,295 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 4974 transitions. Word has length 133 [2021-11-21 00:39:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:07,295 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 4974 transitions. [2021-11-21 00:39:07,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 4974 transitions. [2021-11-21 00:39:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 00:39:07,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:07,301 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:07,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 00:39:07,302 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:07,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash -70709741, now seen corresponding path program 1 times [2021-11-21 00:39:07,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:07,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513759689] [2021-11-21 00:39:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:07,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:07,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:07,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513759689] [2021-11-21 00:39:07,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513759689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:07,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:07,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:07,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466773514] [2021-11-21 00:39:07,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:07,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:07,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:07,355 INFO L87 Difference]: Start difference. First operand 4152 states and 4974 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:07,783 INFO L93 Difference]: Finished difference Result 6700 states and 8065 transitions. [2021-11-21 00:39:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:07,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2021-11-21 00:39:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:07,787 INFO L225 Difference]: With dead ends: 6700 [2021-11-21 00:39:07,787 INFO L226 Difference]: Without dead ends: 4067 [2021-11-21 00:39:07,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:07,790 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 250 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:07,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 282 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:39:07,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2021-11-21 00:39:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 4035. [2021-11-21 00:39:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 4030 states have (on average 1.192803970223325) internal successors, (4807), 4034 states have internal predecessors, (4807), 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) [2021-11-21 00:39:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 4807 transitions. [2021-11-21 00:39:08,143 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 4807 transitions. Word has length 133 [2021-11-21 00:39:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:08,143 INFO L470 AbstractCegarLoop]: Abstraction has 4035 states and 4807 transitions. [2021-11-21 00:39:08,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 4807 transitions. [2021-11-21 00:39:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 00:39:08,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:08,148 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:08,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 00:39:08,149 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:08,149 INFO L85 PathProgramCache]: Analyzing trace with hash -520306153, now seen corresponding path program 1 times [2021-11-21 00:39:08,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:08,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489436440] [2021-11-21 00:39:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:08,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:08,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489436440] [2021-11-21 00:39:08,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489436440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:08,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:08,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:08,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339237686] [2021-11-21 00:39:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:08,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:08,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:08,193 INFO L87 Difference]: Start difference. First operand 4035 states and 4807 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:08,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:08,643 INFO L93 Difference]: Finished difference Result 6718 states and 8020 transitions. [2021-11-21 00:39:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:08,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2021-11-21 00:39:08,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:08,647 INFO L225 Difference]: With dead ends: 6718 [2021-11-21 00:39:08,647 INFO L226 Difference]: Without dead ends: 4125 [2021-11-21 00:39:08,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:08,651 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 263 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:08,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 316 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:39:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2021-11-21 00:39:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 3967. [2021-11-21 00:39:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 3962 states have (on average 1.1857647652700656) internal successors, (4698), 3966 states have internal predecessors, (4698), 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) [2021-11-21 00:39:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 4698 transitions. [2021-11-21 00:39:08,993 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 4698 transitions. Word has length 133 [2021-11-21 00:39:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:08,994 INFO L470 AbstractCegarLoop]: Abstraction has 3967 states and 4698 transitions. [2021-11-21 00:39:08,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 4698 transitions. [2021-11-21 00:39:08,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 00:39:08,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:08,998 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:08,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 00:39:08,999 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:08,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash 81978441, now seen corresponding path program 1 times [2021-11-21 00:39:08,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:08,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498690616] [2021-11-21 00:39:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:09,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:09,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:09,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498690616] [2021-11-21 00:39:09,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498690616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:09,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:09,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:09,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146542840] [2021-11-21 00:39:09,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:09,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:09,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:09,038 INFO L87 Difference]: Start difference. First operand 3967 states and 4698 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:09,432 INFO L93 Difference]: Finished difference Result 6343 states and 7542 transitions. [2021-11-21 00:39:09,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:09,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2021-11-21 00:39:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:09,438 INFO L225 Difference]: With dead ends: 6343 [2021-11-21 00:39:09,438 INFO L226 Difference]: Without dead ends: 3798 [2021-11-21 00:39:09,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:09,441 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 247 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:09,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 283 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:39:09,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2021-11-21 00:39:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3770. [2021-11-21 00:39:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 3765 states have (on average 1.1819389110225764) internal successors, (4450), 3769 states have internal predecessors, (4450), 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) [2021-11-21 00:39:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 4450 transitions. [2021-11-21 00:39:09,748 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 4450 transitions. Word has length 133 [2021-11-21 00:39:09,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:09,748 INFO L470 AbstractCegarLoop]: Abstraction has 3770 states and 4450 transitions. [2021-11-21 00:39:09,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 4450 transitions. [2021-11-21 00:39:09,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 00:39:09,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:09,751 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:09,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-21 00:39:09,751 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:09,752 INFO L85 PathProgramCache]: Analyzing trace with hash 293271339, now seen corresponding path program 1 times [2021-11-21 00:39:09,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:09,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601753076] [2021-11-21 00:39:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:09,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:09,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601753076] [2021-11-21 00:39:09,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601753076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:09,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:09,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:09,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330414622] [2021-11-21 00:39:09,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:09,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:09,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:09,801 INFO L87 Difference]: Start difference. First operand 3770 states and 4450 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:10,219 INFO L93 Difference]: Finished difference Result 7010 states and 8346 transitions. [2021-11-21 00:39:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:10,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2021-11-21 00:39:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:10,223 INFO L225 Difference]: With dead ends: 7010 [2021-11-21 00:39:10,223 INFO L226 Difference]: Without dead ends: 3813 [2021-11-21 00:39:10,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:10,226 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 244 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:10,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 345 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:39:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2021-11-21 00:39:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3546. [2021-11-21 00:39:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3541 states have (on average 1.1815871222818413) internal successors, (4184), 3545 states have internal predecessors, (4184), 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) [2021-11-21 00:39:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 4184 transitions. [2021-11-21 00:39:10,588 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 4184 transitions. Word has length 133 [2021-11-21 00:39:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:10,588 INFO L470 AbstractCegarLoop]: Abstraction has 3546 states and 4184 transitions. [2021-11-21 00:39:10,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-21 00:39:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 4184 transitions. [2021-11-21 00:39:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-21 00:39:10,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:10,593 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:10,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-21 00:39:10,594 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1655977380, now seen corresponding path program 1 times [2021-11-21 00:39:10,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:10,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506705231] [2021-11-21 00:39:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:10,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:10,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:10,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506705231] [2021-11-21 00:39:10,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506705231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:10,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:10,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:39:10,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670768448] [2021-11-21 00:39:10,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:10,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:39:10,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:10,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:39:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:10,656 INFO L87 Difference]: Start difference. First operand 3546 states and 4184 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-11-21 00:39:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:11,026 INFO L93 Difference]: Finished difference Result 4142 states and 4892 transitions. [2021-11-21 00:39:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:39:11,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 135 [2021-11-21 00:39:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:11,029 INFO L225 Difference]: With dead ends: 4142 [2021-11-21 00:39:11,029 INFO L226 Difference]: Without dead ends: 3436 [2021-11-21 00:39:11,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:39:11,031 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 217 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:11,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 784 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:39:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2021-11-21 00:39:11,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3415. [2021-11-21 00:39:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 3410 states have (on average 1.1741935483870967) internal successors, (4004), 3414 states have internal predecessors, (4004), 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) [2021-11-21 00:39:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 4004 transitions. [2021-11-21 00:39:11,312 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 4004 transitions. Word has length 135 [2021-11-21 00:39:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:11,313 INFO L470 AbstractCegarLoop]: Abstraction has 3415 states and 4004 transitions. [2021-11-21 00:39:11,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-11-21 00:39:11,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 4004 transitions. [2021-11-21 00:39:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:39:11,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:11,315 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:11,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-21 00:39:11,316 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash 67165632, now seen corresponding path program 1 times [2021-11-21 00:39:11,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:11,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698291240] [2021-11-21 00:39:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:11,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:14,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:14,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698291240] [2021-11-21 00:39:14,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698291240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:14,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:14,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-21 00:39:14,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297188641] [2021-11-21 00:39:14,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:14,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-21 00:39:14,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-21 00:39:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2021-11-21 00:39:14,752 INFO L87 Difference]: Start difference. First operand 3415 states and 4004 transitions. Second operand has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 28 states have internal predecessors, (138), 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) [2021-11-21 00:39:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:19,661 INFO L93 Difference]: Finished difference Result 5087 states and 6207 transitions. [2021-11-21 00:39:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-21 00:39:19,662 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 28 states have internal predecessors, (138), 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 138 [2021-11-21 00:39:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:19,665 INFO L225 Difference]: With dead ends: 5087 [2021-11-21 00:39:19,665 INFO L226 Difference]: Without dead ends: 4673 [2021-11-21 00:39:19,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=400, Invalid=2050, Unknown=0, NotChecked=0, Total=2450 [2021-11-21 00:39:19,667 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 1645 mSDsluCounter, 6706 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 6968 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:19,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 6968 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-21 00:39:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2021-11-21 00:39:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 3499. [2021-11-21 00:39:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3494 states have (on average 1.1711505437893532) internal successors, (4092), 3498 states have internal predecessors, (4092), 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) [2021-11-21 00:39:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4092 transitions. [2021-11-21 00:39:19,949 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4092 transitions. Word has length 138 [2021-11-21 00:39:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:19,949 INFO L470 AbstractCegarLoop]: Abstraction has 3499 states and 4092 transitions. [2021-11-21 00:39:19,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 28 states have internal predecessors, (138), 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) [2021-11-21 00:39:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4092 transitions. [2021-11-21 00:39:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:39:19,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:19,952 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:19,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-21 00:39:19,953 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:19,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:19,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2046687727, now seen corresponding path program 1 times [2021-11-21 00:39:19,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:19,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825768002] [2021-11-21 00:39:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:19,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:28,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:28,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825768002] [2021-11-21 00:39:28,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825768002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:28,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:28,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-11-21 00:39:28,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383708903] [2021-11-21 00:39:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:28,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-21 00:39:28,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-21 00:39:28,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:39:28,535 INFO L87 Difference]: Start difference. First operand 3499 states and 4092 transitions. Second operand has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 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) [2021-11-21 00:39:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:39:43,427 INFO L93 Difference]: Finished difference Result 3551 states and 4159 transitions. [2021-11-21 00:39:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-21 00:39:43,428 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 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 138 [2021-11-21 00:39:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:39:43,430 INFO L225 Difference]: With dead ends: 3551 [2021-11-21 00:39:43,431 INFO L226 Difference]: Without dead ends: 3544 [2021-11-21 00:39:43,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=706, Invalid=3850, Unknown=0, NotChecked=0, Total=4556 [2021-11-21 00:39:43,433 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 1606 mSDsluCounter, 7100 mSDsCounter, 0 mSdLazyCounter, 3630 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 7319 SdHoareTripleChecker+Invalid, 3669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:39:43,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 7319 Invalid, 3669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3630 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-21 00:39:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2021-11-21 00:39:43,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3499. [2021-11-21 00:39:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3494 states have (on average 1.1708643388666284) internal successors, (4091), 3498 states have internal predecessors, (4091), 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) [2021-11-21 00:39:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4091 transitions. [2021-11-21 00:39:43,756 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4091 transitions. Word has length 138 [2021-11-21 00:39:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:39:43,757 INFO L470 AbstractCegarLoop]: Abstraction has 3499 states and 4091 transitions. [2021-11-21 00:39:43,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 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) [2021-11-21 00:39:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4091 transitions. [2021-11-21 00:39:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:39:43,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:39:43,760 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:39:43,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-21 00:39:43,760 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:39:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:39:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1402289497, now seen corresponding path program 1 times [2021-11-21 00:39:43,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:39:43,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11063404] [2021-11-21 00:39:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:39:43,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:39:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:39:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:39:52,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:39:52,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11063404] [2021-11-21 00:39:52,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11063404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:39:52,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:39:52,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-11-21 00:39:52,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802167138] [2021-11-21 00:39:52,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:39:52,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-21 00:39:52,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:39:52,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-21 00:39:52,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1440, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:39:52,672 INFO L87 Difference]: Start difference. First operand 3499 states and 4091 transitions. Second operand has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 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) [2021-11-21 00:40:03,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:40:03,874 INFO L93 Difference]: Finished difference Result 4383 states and 5325 transitions. [2021-11-21 00:40:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-21 00:40:03,875 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 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 138 [2021-11-21 00:40:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:40:03,878 INFO L225 Difference]: With dead ends: 4383 [2021-11-21 00:40:03,878 INFO L226 Difference]: Without dead ends: 4379 [2021-11-21 00:40:03,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=540, Invalid=3242, Unknown=0, NotChecked=0, Total=3782 [2021-11-21 00:40:03,880 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 924 mSDsluCounter, 6318 mSDsCounter, 0 mSdLazyCounter, 3045 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:40:03,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 6536 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3045 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:40:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2021-11-21 00:40:04,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 3499. [2021-11-21 00:40:04,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3494 states have (on average 1.1705781339439039) internal successors, (4090), 3498 states have internal predecessors, (4090), 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) [2021-11-21 00:40:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4090 transitions. [2021-11-21 00:40:04,181 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4090 transitions. Word has length 138 [2021-11-21 00:40:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:40:04,181 INFO L470 AbstractCegarLoop]: Abstraction has 3499 states and 4090 transitions. [2021-11-21 00:40:04,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.45) internal successors, (138), 39 states have internal predecessors, (138), 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) [2021-11-21 00:40:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4090 transitions. [2021-11-21 00:40:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:40:04,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:40:04,184 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:40:04,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-21 00:40:04,184 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:40:04,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:40:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1833495294, now seen corresponding path program 1 times [2021-11-21 00:40:04,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:40:04,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285405851] [2021-11-21 00:40:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:04,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:40:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:40:08,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:40:08,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285405851] [2021-11-21 00:40:08,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285405851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:40:08,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:40:08,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-21 00:40:08,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859771627] [2021-11-21 00:40:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:40:08,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-21 00:40:08,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:40:08,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-21 00:40:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 00:40:08,605 INFO L87 Difference]: Start difference. First operand 3499 states and 4090 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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) [2021-11-21 00:40:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:40:16,107 INFO L93 Difference]: Finished difference Result 4579 states and 5560 transitions. [2021-11-21 00:40:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-21 00:40:16,107 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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 138 [2021-11-21 00:40:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:40:16,111 INFO L225 Difference]: With dead ends: 4579 [2021-11-21 00:40:16,111 INFO L226 Difference]: Without dead ends: 4508 [2021-11-21 00:40:16,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=596, Invalid=3310, Unknown=0, NotChecked=0, Total=3906 [2021-11-21 00:40:16,113 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 1814 mSDsluCounter, 8632 mSDsCounter, 0 mSdLazyCounter, 3873 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 8884 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:40:16,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1814 Valid, 8884 Invalid, 3964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3873 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-21 00:40:16,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2021-11-21 00:40:16,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 3537. [2021-11-21 00:40:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3532 states have (on average 1.1693091732729333) internal successors, (4130), 3536 states have internal predecessors, (4130), 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) [2021-11-21 00:40:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 4130 transitions. [2021-11-21 00:40:16,467 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 4130 transitions. Word has length 138 [2021-11-21 00:40:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:40:16,467 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 4130 transitions. [2021-11-21 00:40:16,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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) [2021-11-21 00:40:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 4130 transitions. [2021-11-21 00:40:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:40:16,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:40:16,470 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:40:16,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-21 00:40:16,470 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:40:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:40:16,471 INFO L85 PathProgramCache]: Analyzing trace with hash 347618643, now seen corresponding path program 1 times [2021-11-21 00:40:16,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:40:16,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187814395] [2021-11-21 00:40:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:16,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:40:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:40:21,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:40:21,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187814395] [2021-11-21 00:40:21,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187814395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:40:21,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:40:21,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-21 00:40:21,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378666426] [2021-11-21 00:40:21,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:40:21,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-21 00:40:21,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:40:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-21 00:40:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:40:21,313 INFO L87 Difference]: Start difference. First operand 3537 states and 4130 transitions. Second operand has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 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) [2021-11-21 00:40:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:40:28,660 INFO L93 Difference]: Finished difference Result 3799 states and 4442 transitions. [2021-11-21 00:40:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-21 00:40:28,661 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 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 138 [2021-11-21 00:40:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:40:28,664 INFO L225 Difference]: With dead ends: 3799 [2021-11-21 00:40:28,664 INFO L226 Difference]: Without dead ends: 3535 [2021-11-21 00:40:28,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=485, Invalid=2821, Unknown=0, NotChecked=0, Total=3306 [2021-11-21 00:40:28,667 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 969 mSDsluCounter, 5323 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 5568 SdHoareTripleChecker+Invalid, 2764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:40:28,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 5568 Invalid, 2764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-21 00:40:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-11-21 00:40:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3529. [2021-11-21 00:40:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3524 states have (on average 1.1685584562996594) internal successors, (4118), 3528 states have internal predecessors, (4118), 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) [2021-11-21 00:40:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4118 transitions. [2021-11-21 00:40:29,003 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4118 transitions. Word has length 138 [2021-11-21 00:40:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:40:29,004 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4118 transitions. [2021-11-21 00:40:29,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 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) [2021-11-21 00:40:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4118 transitions. [2021-11-21 00:40:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:40:29,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:40:29,007 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:40:29,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-21 00:40:29,007 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:40:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:40:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 992016873, now seen corresponding path program 1 times [2021-11-21 00:40:29,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:40:29,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360676690] [2021-11-21 00:40:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:29,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:40:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:40:33,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:40:33,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360676690] [2021-11-21 00:40:33,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360676690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:40:33,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:40:33,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-21 00:40:33,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925257568] [2021-11-21 00:40:33,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:40:33,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-21 00:40:33,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:40:33,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-21 00:40:33,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 00:40:33,693 INFO L87 Difference]: Start difference. First operand 3529 states and 4118 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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) [2021-11-21 00:40:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:40:42,343 INFO L93 Difference]: Finished difference Result 4413 states and 5352 transitions. [2021-11-21 00:40:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-21 00:40:42,344 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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 138 [2021-11-21 00:40:42,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:40:42,347 INFO L225 Difference]: With dead ends: 4413 [2021-11-21 00:40:42,347 INFO L226 Difference]: Without dead ends: 4409 [2021-11-21 00:40:42,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=503, Invalid=3157, Unknown=0, NotChecked=0, Total=3660 [2021-11-21 00:40:42,350 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 962 mSDsluCounter, 6432 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 6650 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:40:42,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 6650 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:40:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2021-11-21 00:40:42,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 3529. [2021-11-21 00:40:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3524 states have (on average 1.1682746878547106) internal successors, (4117), 3528 states have internal predecessors, (4117), 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) [2021-11-21 00:40:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4117 transitions. [2021-11-21 00:40:42,685 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4117 transitions. Word has length 138 [2021-11-21 00:40:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:40:42,686 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4117 transitions. [2021-11-21 00:40:42,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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) [2021-11-21 00:40:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4117 transitions. [2021-11-21 00:40:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:40:42,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:40:42,690 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:40:42,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-21 00:40:42,691 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:40:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:40:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash 47671936, now seen corresponding path program 1 times [2021-11-21 00:40:42,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:40:42,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836291353] [2021-11-21 00:40:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:42,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:40:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:40:45,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:40:45,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836291353] [2021-11-21 00:40:45,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836291353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:40:45,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:40:45,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-21 00:40:45,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327669822] [2021-11-21 00:40:45,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:40:45,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 00:40:45,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:40:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 00:40:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-11-21 00:40:45,612 INFO L87 Difference]: Start difference. First operand 3529 states and 4117 transitions. Second operand has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 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) [2021-11-21 00:40:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:40:48,634 INFO L93 Difference]: Finished difference Result 4830 states and 5919 transitions. [2021-11-21 00:40:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 00:40:48,635 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 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 138 [2021-11-21 00:40:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:40:48,638 INFO L225 Difference]: With dead ends: 4830 [2021-11-21 00:40:48,639 INFO L226 Difference]: Without dead ends: 4822 [2021-11-21 00:40:48,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2021-11-21 00:40:48,640 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 935 mSDsluCounter, 6009 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 6283 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:40:48,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 6283 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-21 00:40:48,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-11-21 00:40:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 3529. [2021-11-21 00:40:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3524 states have (on average 1.1674233825198639) internal successors, (4114), 3528 states have internal predecessors, (4114), 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) [2021-11-21 00:40:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4114 transitions. [2021-11-21 00:40:48,977 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4114 transitions. Word has length 138 [2021-11-21 00:40:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:40:48,977 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4114 transitions. [2021-11-21 00:40:48,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 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) [2021-11-21 00:40:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4114 transitions. [2021-11-21 00:40:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:40:48,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:40:48,981 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:40:48,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-21 00:40:48,981 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:40:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:40:48,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2066181423, now seen corresponding path program 1 times [2021-11-21 00:40:48,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:40:48,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782522274] [2021-11-21 00:40:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:40:48,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:40:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:40:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:40:55,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:40:55,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782522274] [2021-11-21 00:40:55,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782522274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:40:55,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:40:55,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-21 00:40:55,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966352057] [2021-11-21 00:40:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:40:55,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-21 00:40:55,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:40:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-21 00:40:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1217, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:40:55,533 INFO L87 Difference]: Start difference. First operand 3529 states and 4114 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 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) [2021-11-21 00:41:10,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:41:10,093 INFO L93 Difference]: Finished difference Result 3581 states and 4181 transitions. [2021-11-21 00:41:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-21 00:41:10,093 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 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 138 [2021-11-21 00:41:10,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:41:10,096 INFO L225 Difference]: With dead ends: 3581 [2021-11-21 00:41:10,097 INFO L226 Difference]: Without dead ends: 3574 [2021-11-21 00:41:10,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=592, Invalid=3190, Unknown=0, NotChecked=0, Total=3782 [2021-11-21 00:41:10,099 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 687 mSDsluCounter, 7623 mSDsCounter, 0 mSdLazyCounter, 3614 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 7813 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:41:10,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 7813 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3614 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-21 00:41:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-11-21 00:41:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3529. [2021-11-21 00:41:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3524 states have (on average 1.1671396140749148) internal successors, (4113), 3528 states have internal predecessors, (4113), 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) [2021-11-21 00:41:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4113 transitions. [2021-11-21 00:41:10,456 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4113 transitions. Word has length 138 [2021-11-21 00:41:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:41:10,456 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4113 transitions. [2021-11-21 00:41:10,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 36 states have internal predecessors, (138), 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) [2021-11-21 00:41:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4113 transitions. [2021-11-21 00:41:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:41:10,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:41:10,461 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:41:10,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-21 00:41:10,461 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:41:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:41:10,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1421783193, now seen corresponding path program 1 times [2021-11-21 00:41:10,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:41:10,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924736371] [2021-11-21 00:41:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:41:10,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:41:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:41:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:41:13,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:41:13,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924736371] [2021-11-21 00:41:13,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924736371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:41:13,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:41:13,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-21 00:41:13,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851581698] [2021-11-21 00:41:13,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:41:13,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-21 00:41:13,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:41:13,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-21 00:41:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2021-11-21 00:41:13,615 INFO L87 Difference]: Start difference. First operand 3529 states and 4113 transitions. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 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) [2021-11-21 00:41:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:41:19,179 INFO L93 Difference]: Finished difference Result 5095 states and 6236 transitions. [2021-11-21 00:41:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-21 00:41:19,179 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 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 138 [2021-11-21 00:41:19,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:41:19,184 INFO L225 Difference]: With dead ends: 5095 [2021-11-21 00:41:19,184 INFO L226 Difference]: Without dead ends: 5087 [2021-11-21 00:41:19,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=451, Invalid=2201, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 00:41:19,186 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 1448 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 6568 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:41:19,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 6568 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 00:41:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5087 states. [2021-11-21 00:41:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5087 to 3529. [2021-11-21 00:41:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3524 states have (on average 1.166572077185017) internal successors, (4111), 3528 states have internal predecessors, (4111), 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) [2021-11-21 00:41:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4111 transitions. [2021-11-21 00:41:19,601 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4111 transitions. Word has length 138 [2021-11-21 00:41:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:41:19,601 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4111 transitions. [2021-11-21 00:41:19,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 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) [2021-11-21 00:41:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4111 transitions. [2021-11-21 00:41:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:41:19,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:41:19,605 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:41:19,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-21 00:41:19,605 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:41:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:41:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash 186825986, now seen corresponding path program 1 times [2021-11-21 00:41:19,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:41:19,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529858294] [2021-11-21 00:41:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:41:19,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:41:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:41:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:41:25,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:41:25,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529858294] [2021-11-21 00:41:25,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529858294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:41:25,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:41:25,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-21 00:41:25,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685934899] [2021-11-21 00:41:25,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:41:25,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:41:25,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:41:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:41:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1274, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:41:25,096 INFO L87 Difference]: Start difference. First operand 3529 states and 4111 transitions. Second operand has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 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) [2021-11-21 00:41:38,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:41:38,425 INFO L93 Difference]: Finished difference Result 6130 states and 7732 transitions. [2021-11-21 00:41:38,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-21 00:41:38,426 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 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 138 [2021-11-21 00:41:38,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:41:38,431 INFO L225 Difference]: With dead ends: 6130 [2021-11-21 00:41:38,431 INFO L226 Difference]: Without dead ends: 6122 [2021-11-21 00:41:38,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=749, Invalid=4081, Unknown=0, NotChecked=0, Total=4830 [2021-11-21 00:41:38,432 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 2170 mSDsluCounter, 9256 mSDsCounter, 0 mSdLazyCounter, 4538 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 9506 SdHoareTripleChecker+Invalid, 4578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:41:38,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2170 Valid, 9506 Invalid, 4578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4538 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 00:41:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2021-11-21 00:41:38,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 3554. [2021-11-21 00:41:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3549 states have (on average 1.165680473372781) internal successors, (4137), 3553 states have internal predecessors, (4137), 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) [2021-11-21 00:41:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 4137 transitions. [2021-11-21 00:41:38,917 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 4137 transitions. Word has length 138 [2021-11-21 00:41:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:41:38,917 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 4137 transitions. [2021-11-21 00:41:38,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 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) [2021-11-21 00:41:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 4137 transitions. [2021-11-21 00:41:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:41:38,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:41:38,920 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:41:38,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-21 00:41:38,921 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:41:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:41:38,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1927027373, now seen corresponding path program 1 times [2021-11-21 00:41:38,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:41:38,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081870013] [2021-11-21 00:41:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:41:38,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:41:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:41:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:41:40,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:41:40,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081870013] [2021-11-21 00:41:40,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081870013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:41:40,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:41:40,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-21 00:41:40,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30823940] [2021-11-21 00:41:40,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:41:40,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-21 00:41:40,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:41:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-21 00:41:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-11-21 00:41:40,806 INFO L87 Difference]: Start difference. First operand 3554 states and 4137 transitions. Second operand has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 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) [2021-11-21 00:41:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:41:45,937 INFO L93 Difference]: Finished difference Result 5222 states and 6354 transitions. [2021-11-21 00:41:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-21 00:41:45,938 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 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 138 [2021-11-21 00:41:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:41:45,941 INFO L225 Difference]: With dead ends: 5222 [2021-11-21 00:41:45,942 INFO L226 Difference]: Without dead ends: 4835 [2021-11-21 00:41:45,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=358, Invalid=1994, Unknown=0, NotChecked=0, Total=2352 [2021-11-21 00:41:45,943 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 2086 mSDsluCounter, 7098 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2086 SdHoareTripleChecker+Valid, 7340 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:41:45,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2086 Valid, 7340 Invalid, 2615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-21 00:41:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4835 states. [2021-11-21 00:41:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4835 to 3529. [2021-11-21 00:41:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3524 states have (on average 1.1637343927355277) internal successors, (4101), 3528 states have internal predecessors, (4101), 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) [2021-11-21 00:41:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4101 transitions. [2021-11-21 00:41:46,404 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4101 transitions. Word has length 138 [2021-11-21 00:41:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:41:46,405 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4101 transitions. [2021-11-21 00:41:46,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 25 states have internal predecessors, (138), 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) [2021-11-21 00:41:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4101 transitions. [2021-11-21 00:41:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:41:46,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:41:46,407 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:41:46,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-21 00:41:46,408 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:41:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:41:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1282629143, now seen corresponding path program 1 times [2021-11-21 00:41:46,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:41:46,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494698832] [2021-11-21 00:41:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:41:46,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:41:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:41:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:41:50,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:41:50,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494698832] [2021-11-21 00:41:50,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494698832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:41:50,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:41:50,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-21 00:41:50,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522179000] [2021-11-21 00:41:50,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:41:50,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-21 00:41:50,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:41:50,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-21 00:41:50,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 00:41:50,740 INFO L87 Difference]: Start difference. First operand 3529 states and 4101 transitions. Second operand has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 32 states have internal predecessors, (138), 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) [2021-11-21 00:41:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:41:58,729 INFO L93 Difference]: Finished difference Result 4417 states and 5334 transitions. [2021-11-21 00:41:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-21 00:41:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 32 states have internal predecessors, (138), 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 138 [2021-11-21 00:41:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:41:58,733 INFO L225 Difference]: With dead ends: 4417 [2021-11-21 00:41:58,733 INFO L226 Difference]: Without dead ends: 4413 [2021-11-21 00:41:58,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=500, Invalid=2692, Unknown=0, NotChecked=0, Total=3192 [2021-11-21 00:41:58,735 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 932 mSDsluCounter, 7522 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 7835 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:41:58,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 7835 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:41:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2021-11-21 00:41:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 3529. [2021-11-21 00:41:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3524 states have (on average 1.1634506242905789) internal successors, (4100), 3528 states have internal predecessors, (4100), 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) [2021-11-21 00:41:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4100 transitions. [2021-11-21 00:41:59,193 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4100 transitions. Word has length 138 [2021-11-21 00:41:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:41:59,193 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4100 transitions. [2021-11-21 00:41:59,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 32 states have internal predecessors, (138), 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) [2021-11-21 00:41:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4100 transitions. [2021-11-21 00:41:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:41:59,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:41:59,195 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:41:59,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-21 00:41:59,195 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:41:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:41:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash 764278850, now seen corresponding path program 1 times [2021-11-21 00:41:59,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:41:59,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59684404] [2021-11-21 00:41:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:41:59,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:41:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:42:05,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:05,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59684404] [2021-11-21 00:42:05,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59684404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:42:05,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:42:05,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-11-21 00:42:05,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131990774] [2021-11-21 00:42:05,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:42:05,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-21 00:42:05,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-21 00:42:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1350, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 00:42:05,012 INFO L87 Difference]: Start difference. First operand 3529 states and 4100 transitions. Second operand has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 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) [2021-11-21 00:42:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:18,789 INFO L93 Difference]: Finished difference Result 4557 states and 5502 transitions. [2021-11-21 00:42:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-21 00:42:18,790 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 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 138 [2021-11-21 00:42:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:18,794 INFO L225 Difference]: With dead ends: 4557 [2021-11-21 00:42:18,794 INFO L226 Difference]: Without dead ends: 4412 [2021-11-21 00:42:18,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=628, Invalid=3928, Unknown=0, NotChecked=0, Total=4556 [2021-11-21 00:42:18,796 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 846 mSDsluCounter, 7609 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 7838 SdHoareTripleChecker+Invalid, 4007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:18,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 7838 Invalid, 4007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 00:42:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4412 states. [2021-11-21 00:42:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4412 to 3529. [2021-11-21 00:42:19,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3524 states have (on average 1.162883087400681) internal successors, (4098), 3528 states have internal predecessors, (4098), 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) [2021-11-21 00:42:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4098 transitions. [2021-11-21 00:42:19,280 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4098 transitions. Word has length 138 [2021-11-21 00:42:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:19,280 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4098 transitions. [2021-11-21 00:42:19,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 38 states have internal predecessors, (138), 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) [2021-11-21 00:42:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4098 transitions. [2021-11-21 00:42:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:42:19,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:19,282 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:42:19,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-21 00:42:19,283 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:42:19,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1349574509, now seen corresponding path program 1 times [2021-11-21 00:42:19,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:19,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828359385] [2021-11-21 00:42:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:19,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:42:20,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:20,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828359385] [2021-11-21 00:42:20,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828359385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:42:20,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:42:20,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-21 00:42:20,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811783568] [2021-11-21 00:42:20,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:42:20,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-21 00:42:20,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:20,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-21 00:42:20,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:42:20,442 INFO L87 Difference]: Start difference. First operand 3529 states and 4098 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 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) [2021-11-21 00:42:23,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:23,802 INFO L93 Difference]: Finished difference Result 3968 states and 4654 transitions. [2021-11-21 00:42:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:42:23,809 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 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 138 [2021-11-21 00:42:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:23,811 INFO L225 Difference]: With dead ends: 3968 [2021-11-21 00:42:23,812 INFO L226 Difference]: Without dead ends: 3647 [2021-11-21 00:42:23,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=227, Invalid=1105, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:42:23,813 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 986 mSDsluCounter, 7380 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 2290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:23,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 7615 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-21 00:42:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-11-21 00:42:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3375. [2021-11-21 00:42:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3370 states have (on average 1.1587537091988132) internal successors, (3905), 3374 states have internal predecessors, (3905), 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) [2021-11-21 00:42:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 3905 transitions. [2021-11-21 00:42:24,251 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 3905 transitions. Word has length 138 [2021-11-21 00:42:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:24,252 INFO L470 AbstractCegarLoop]: Abstraction has 3375 states and 3905 transitions. [2021-11-21 00:42:24,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 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) [2021-11-21 00:42:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 3905 transitions. [2021-11-21 00:42:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:42:24,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:24,254 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:42:24,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-21 00:42:24,254 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:42:24,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:24,254 INFO L85 PathProgramCache]: Analyzing trace with hash -705176279, now seen corresponding path program 1 times [2021-11-21 00:42:24,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:24,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879711744] [2021-11-21 00:42:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:24,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:42:26,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:26,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879711744] [2021-11-21 00:42:26,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879711744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:42:26,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:42:26,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-21 00:42:26,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219185902] [2021-11-21 00:42:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:42:26,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-21 00:42:26,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-21 00:42:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-11-21 00:42:26,200 INFO L87 Difference]: Start difference. First operand 3375 states and 3905 transitions. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 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) [2021-11-21 00:42:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:30,484 INFO L93 Difference]: Finished difference Result 4648 states and 5624 transitions. [2021-11-21 00:42:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 00:42:30,485 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 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 138 [2021-11-21 00:42:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:30,489 INFO L225 Difference]: With dead ends: 4648 [2021-11-21 00:42:30,489 INFO L226 Difference]: Without dead ends: 4640 [2021-11-21 00:42:30,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=321, Invalid=1749, Unknown=0, NotChecked=0, Total=2070 [2021-11-21 00:42:30,490 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1956 mSDsluCounter, 5919 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 6267 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:30,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1956 Valid, 6267 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 00:42:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4640 states. [2021-11-21 00:42:30,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4640 to 3375. [2021-11-21 00:42:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3370 states have (on average 1.1578635014836796) internal successors, (3902), 3374 states have internal predecessors, (3902), 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) [2021-11-21 00:42:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 3902 transitions. [2021-11-21 00:42:30,998 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 3902 transitions. Word has length 138 [2021-11-21 00:42:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:30,998 INFO L470 AbstractCegarLoop]: Abstraction has 3375 states and 3902 transitions. [2021-11-21 00:42:30,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 23 states have internal predecessors, (138), 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) [2021-11-21 00:42:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 3902 transitions. [2021-11-21 00:42:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:42:31,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:31,000 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:42:31,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-21 00:42:31,000 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:42:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1649521216, now seen corresponding path program 1 times [2021-11-21 00:42:31,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:31,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804810862] [2021-11-21 00:42:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:31,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:42:36,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:36,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804810862] [2021-11-21 00:42:36,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804810862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:42:36,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:42:36,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-21 00:42:36,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211475737] [2021-11-21 00:42:36,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:42:36,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-21 00:42:36,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:36,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-21 00:42:36,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 00:42:36,757 INFO L87 Difference]: Start difference. First operand 3375 states and 3902 transitions. Second operand has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 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) [2021-11-21 00:42:48,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:48,264 INFO L93 Difference]: Finished difference Result 4310 states and 5194 transitions. [2021-11-21 00:42:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-21 00:42:48,265 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 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 138 [2021-11-21 00:42:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:48,268 INFO L225 Difference]: With dead ends: 4310 [2021-11-21 00:42:48,268 INFO L226 Difference]: Without dead ends: 4306 [2021-11-21 00:42:48,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=506, Invalid=3034, Unknown=0, NotChecked=0, Total=3540 [2021-11-21 00:42:48,270 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 877 mSDsluCounter, 8132 mSDsCounter, 0 mSdLazyCounter, 3573 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 8387 SdHoareTripleChecker+Invalid, 3605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:48,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 8387 Invalid, 3605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3573 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 00:42:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-11-21 00:42:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3375. [2021-11-21 00:42:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3370 states have (on average 1.157566765578635) internal successors, (3901), 3374 states have internal predecessors, (3901), 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) [2021-11-21 00:42:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 3901 transitions. [2021-11-21 00:42:48,765 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 3901 transitions. Word has length 138 [2021-11-21 00:42:48,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:48,766 INFO L470 AbstractCegarLoop]: Abstraction has 3375 states and 3901 transitions. [2021-11-21 00:42:48,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 33 states have internal predecessors, (138), 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) [2021-11-21 00:42:48,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 3901 transitions. [2021-11-21 00:42:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:42:48,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:48,768 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:42:48,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-21 00:42:48,768 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:42:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 531592721, now seen corresponding path program 1 times [2021-11-21 00:42:48,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:48,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924506538] [2021-11-21 00:42:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:48,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:42:52,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:52,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924506538] [2021-11-21 00:42:52,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924506538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:42:52,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:42:52,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-21 00:42:52,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747802188] [2021-11-21 00:42:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:42:52,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-21 00:42:52,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-21 00:42:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2021-11-21 00:42:52,324 INFO L87 Difference]: Start difference. First operand 3375 states and 3901 transitions. Second operand has 32 states, 32 states have (on average 4.3125) internal successors, (138), 31 states have internal predecessors, (138), 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) [2021-11-21 00:42:59,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:59,361 INFO L93 Difference]: Finished difference Result 3514 states and 4087 transitions. [2021-11-21 00:42:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 00:42:59,362 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.3125) internal successors, (138), 31 states have internal predecessors, (138), 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 138 [2021-11-21 00:42:59,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:59,364 INFO L225 Difference]: With dead ends: 3514 [2021-11-21 00:42:59,365 INFO L226 Difference]: Without dead ends: 3507 [2021-11-21 00:42:59,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2021-11-21 00:42:59,366 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 1735 mSDsluCounter, 6536 mSDsCounter, 0 mSdLazyCounter, 2960 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:59,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 6827 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2960 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:42:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2021-11-21 00:42:59,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3375. [2021-11-21 00:42:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3370 states have (on average 1.1572700296735905) internal successors, (3900), 3374 states have internal predecessors, (3900), 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) [2021-11-21 00:42:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 3900 transitions. [2021-11-21 00:42:59,849 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 3900 transitions. Word has length 138 [2021-11-21 00:42:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:59,849 INFO L470 AbstractCegarLoop]: Abstraction has 3375 states and 3900 transitions. [2021-11-21 00:42:59,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.3125) internal successors, (138), 31 states have internal predecessors, (138), 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) [2021-11-21 00:42:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 3900 transitions. [2021-11-21 00:42:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:42:59,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:59,851 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:42:59,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-21 00:42:59,851 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:42:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1431715541, now seen corresponding path program 1 times [2021-11-21 00:42:59,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:59,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022887720] [2021-11-21 00:42:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:59,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:43:03,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:03,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022887720] [2021-11-21 00:43:03,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022887720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:03,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:03,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-21 00:43:03,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411007261] [2021-11-21 00:43:03,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-21 00:43:03,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-21 00:43:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 00:43:03,965 INFO L87 Difference]: Start difference. First operand 3375 states and 3900 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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) [2021-11-21 00:43:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:12,204 INFO L93 Difference]: Finished difference Result 4213 states and 5064 transitions. [2021-11-21 00:43:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-21 00:43:12,204 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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 138 [2021-11-21 00:43:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:12,207 INFO L225 Difference]: With dead ends: 4213 [2021-11-21 00:43:12,207 INFO L226 Difference]: Without dead ends: 4209 [2021-11-21 00:43:12,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=518, Invalid=3142, Unknown=0, NotChecked=0, Total=3660 [2021-11-21 00:43:12,208 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 769 mSDsluCounter, 7648 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 7896 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:12,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 7896 Invalid, 3774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3757 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 00:43:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2021-11-21 00:43:12,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 3375. [2021-11-21 00:43:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3370 states have (on average 1.156973293768546) internal successors, (3899), 3374 states have internal predecessors, (3899), 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) [2021-11-21 00:43:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 3899 transitions. [2021-11-21 00:43:12,688 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 3899 transitions. Word has length 138 [2021-11-21 00:43:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:12,689 INFO L470 AbstractCegarLoop]: Abstraction has 3375 states and 3899 transitions. [2021-11-21 00:43:12,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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) [2021-11-21 00:43:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 3899 transitions. [2021-11-21 00:43:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:43:12,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:12,690 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:43:12,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-21 00:43:12,691 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:43:12,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash 615192452, now seen corresponding path program 1 times [2021-11-21 00:43:12,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:12,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303002112] [2021-11-21 00:43:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:12,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:43:17,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:17,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303002112] [2021-11-21 00:43:17,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303002112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:17,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:17,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-21 00:43:17,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270637637] [2021-11-21 00:43:17,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:17,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:43:17,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:43:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:43:17,383 INFO L87 Difference]: Start difference. First operand 3375 states and 3899 transitions. Second operand has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 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) [2021-11-21 00:43:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:29,398 INFO L93 Difference]: Finished difference Result 4347 states and 5223 transitions. [2021-11-21 00:43:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-21 00:43:29,399 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 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 138 [2021-11-21 00:43:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:29,405 INFO L225 Difference]: With dead ends: 4347 [2021-11-21 00:43:29,406 INFO L226 Difference]: Without dead ends: 4209 [2021-11-21 00:43:29,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=589, Invalid=3317, Unknown=0, NotChecked=0, Total=3906 [2021-11-21 00:43:29,408 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 870 mSDsluCounter, 7240 mSDsCounter, 0 mSdLazyCounter, 4027 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 7485 SdHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:29,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 7485 Invalid, 4041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4027 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-21 00:43:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2021-11-21 00:43:29,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 3375. [2021-11-21 00:43:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3370 states have (on average 1.156379821958457) internal successors, (3897), 3374 states have internal predecessors, (3897), 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) [2021-11-21 00:43:29,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 3897 transitions. [2021-11-21 00:43:29,908 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 3897 transitions. Word has length 138 [2021-11-21 00:43:29,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:29,908 INFO L470 AbstractCegarLoop]: Abstraction has 3375 states and 3897 transitions. [2021-11-21 00:43:29,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6315789473684212) internal successors, (138), 37 states have internal predecessors, (138), 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) [2021-11-21 00:43:29,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 3897 transitions. [2021-11-21 00:43:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:43:29,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:29,911 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:43:29,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-21 00:43:29,911 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:43:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash -854262677, now seen corresponding path program 1 times [2021-11-21 00:43:29,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:29,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621842672] [2021-11-21 00:43:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:29,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:43:34,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:34,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621842672] [2021-11-21 00:43:34,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621842672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:34,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:34,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-11-21 00:43:34,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033728767] [2021-11-21 00:43:34,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:34,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-21 00:43:34,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:34,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-21 00:43:34,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2021-11-21 00:43:34,576 INFO L87 Difference]: Start difference. First operand 3375 states and 3897 transitions. Second operand has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 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) [2021-11-21 00:43:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:43,156 INFO L93 Difference]: Finished difference Result 4306 states and 5187 transitions. [2021-11-21 00:43:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-21 00:43:43,156 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 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 138 [2021-11-21 00:43:43,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:43,159 INFO L225 Difference]: With dead ends: 4306 [2021-11-21 00:43:43,159 INFO L226 Difference]: Without dead ends: 4254 [2021-11-21 00:43:43,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=523, Invalid=3017, Unknown=0, NotChecked=0, Total=3540 [2021-11-21 00:43:43,161 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 776 mSDsluCounter, 7840 mSDsCounter, 0 mSdLazyCounter, 3784 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 8125 SdHoareTripleChecker+Invalid, 3801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:43,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 8125 Invalid, 3801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3784 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:43:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2021-11-21 00:43:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 3418. [2021-11-21 00:43:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.159097568121887) internal successors, (3956), 3417 states have internal predecessors, (3956), 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) [2021-11-21 00:43:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3956 transitions. [2021-11-21 00:43:43,697 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3956 transitions. Word has length 138 [2021-11-21 00:43:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:43,697 INFO L470 AbstractCegarLoop]: Abstraction has 3418 states and 3956 transitions. [2021-11-21 00:43:43,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 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) [2021-11-21 00:43:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3956 transitions. [2021-11-21 00:43:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:43:43,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:43,699 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:43:43,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-21 00:43:43,700 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:43:43,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1543262251, now seen corresponding path program 1 times [2021-11-21 00:43:43,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:43,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850404589] [2021-11-21 00:43:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:43,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:43:48,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:48,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850404589] [2021-11-21 00:43:48,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850404589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:48,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:48,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-21 00:43:48,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179600899] [2021-11-21 00:43:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:48,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-21 00:43:48,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-21 00:43:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 00:43:48,366 INFO L87 Difference]: Start difference. First operand 3418 states and 3956 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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) [2021-11-21 00:44:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:03,683 INFO L93 Difference]: Finished difference Result 3839 states and 4492 transitions. [2021-11-21 00:44:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-21 00:44:03,684 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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 138 [2021-11-21 00:44:03,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:03,687 INFO L225 Difference]: With dead ends: 3839 [2021-11-21 00:44:03,687 INFO L226 Difference]: Without dead ends: 3832 [2021-11-21 00:44:03,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=661, Invalid=3629, Unknown=0, NotChecked=0, Total=4290 [2021-11-21 00:44:03,688 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1260 mSDsluCounter, 10625 mSDsCounter, 0 mSdLazyCounter, 5270 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 10928 SdHoareTripleChecker+Invalid, 5337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 5270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:03,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1260 Valid, 10928 Invalid, 5337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 5270 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-21 00:44:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2021-11-21 00:44:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3440. [2021-11-21 00:44:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3440 states, 3435 states have (on average 1.1580786026200873) internal successors, (3978), 3439 states have internal predecessors, (3978), 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) [2021-11-21 00:44:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 3978 transitions. [2021-11-21 00:44:04,212 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 3978 transitions. Word has length 138 [2021-11-21 00:44:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:04,213 INFO L470 AbstractCegarLoop]: Abstraction has 3440 states and 3978 transitions. [2021-11-21 00:44:04,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 35 states have internal predecessors, (138), 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) [2021-11-21 00:44:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 3978 transitions. [2021-11-21 00:44:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:44:04,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:04,215 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:44:04,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-21 00:44:04,215 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:44:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:04,216 INFO L85 PathProgramCache]: Analyzing trace with hash -898864021, now seen corresponding path program 1 times [2021-11-21 00:44:04,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:04,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403161119] [2021-11-21 00:44:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:04,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:44:06,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:06,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403161119] [2021-11-21 00:44:06,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403161119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:44:06,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:44:06,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-21 00:44:06,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656010836] [2021-11-21 00:44:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:44:06,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-21 00:44:06,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-21 00:44:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-11-21 00:44:06,366 INFO L87 Difference]: Start difference. First operand 3440 states and 3978 transitions. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 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) [2021-11-21 00:44:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:11,130 INFO L93 Difference]: Finished difference Result 4378 states and 5267 transitions. [2021-11-21 00:44:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-21 00:44:11,132 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 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 138 [2021-11-21 00:44:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:11,135 INFO L225 Difference]: With dead ends: 4378 [2021-11-21 00:44:11,135 INFO L226 Difference]: Without dead ends: 4252 [2021-11-21 00:44:11,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=348, Invalid=1814, Unknown=0, NotChecked=0, Total=2162 [2021-11-21 00:44:11,137 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 609 mSDsluCounter, 5669 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 5896 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:11,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 5896 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 00:44:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2021-11-21 00:44:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 3418. [2021-11-21 00:44:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3413 states have (on average 1.1582185760328156) internal successors, (3953), 3417 states have internal predecessors, (3953), 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) [2021-11-21 00:44:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 3953 transitions. [2021-11-21 00:44:11,671 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 3953 transitions. Word has length 138 [2021-11-21 00:44:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:11,672 INFO L470 AbstractCegarLoop]: Abstraction has 3418 states and 3953 transitions. [2021-11-21 00:44:11,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 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) [2021-11-21 00:44:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 3953 transitions. [2021-11-21 00:44:11,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-21 00:44:11,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:11,673 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:44:11,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-21 00:44:11,674 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:44:11,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1781370565, now seen corresponding path program 1 times [2021-11-21 00:44:11,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:11,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829168392] [2021-11-21 00:44:11,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:11,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:44:36,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:36,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829168392] [2021-11-21 00:44:36,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829168392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:44:36,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:44:36,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-21 00:44:36,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314531078] [2021-11-21 00:44:36,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:44:36,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:44:36,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:44:36,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1255, Unknown=1, NotChecked=0, Total=1406 [2021-11-21 00:44:36,423 INFO L87 Difference]: Start difference. First operand 3418 states and 3953 transitions. Second operand has 38 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 37 states have internal predecessors, (139), 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) [2021-11-21 00:44:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:54,033 INFO L93 Difference]: Finished difference Result 4297 states and 5176 transitions. [2021-11-21 00:44:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-21 00:44:54,034 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 37 states have internal predecessors, (139), 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 139 [2021-11-21 00:44:54,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:54,037 INFO L225 Difference]: With dead ends: 4297 [2021-11-21 00:44:54,037 INFO L226 Difference]: Without dead ends: 4205 [2021-11-21 00:44:54,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=619, Invalid=3412, Unknown=1, NotChecked=0, Total=4032 [2021-11-21 00:44:54,038 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 895 mSDsluCounter, 5487 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:54,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 5681 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 00:44:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2021-11-21 00:44:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 3411. [2021-11-21 00:44:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3411 states, 3406 states have (on average 1.158250146799765) internal successors, (3945), 3410 states have internal predecessors, (3945), 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) [2021-11-21 00:44:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 3945 transitions. [2021-11-21 00:44:54,573 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 3945 transitions. Word has length 139 [2021-11-21 00:44:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:54,573 INFO L470 AbstractCegarLoop]: Abstraction has 3411 states and 3945 transitions. [2021-11-21 00:44:54,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 37 states have internal predecessors, (139), 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) [2021-11-21 00:44:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 3945 transitions. [2021-11-21 00:44:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-21 00:44:54,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:54,575 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:44:54,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-21 00:44:54,575 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:44:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1337739945, now seen corresponding path program 1 times [2021-11-21 00:44:54,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:54,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838178490] [2021-11-21 00:44:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:54,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:44:59,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:59,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838178490] [2021-11-21 00:44:59,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838178490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:44:59,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:44:59,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-21 00:44:59,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069988786] [2021-11-21 00:44:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:44:59,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-21 00:44:59,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-21 00:44:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:44:59,127 INFO L87 Difference]: Start difference. First operand 3411 states and 3945 transitions. Second operand has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 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) [2021-11-21 00:45:06,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:06,843 INFO L93 Difference]: Finished difference Result 4290 states and 5168 transitions. [2021-11-21 00:45:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-21 00:45:06,843 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 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 139 [2021-11-21 00:45:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:06,846 INFO L225 Difference]: With dead ends: 4290 [2021-11-21 00:45:06,846 INFO L226 Difference]: Without dead ends: 4198 [2021-11-21 00:45:06,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=678, Invalid=3228, Unknown=0, NotChecked=0, Total=3906 [2021-11-21 00:45:06,848 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 809 mSDsluCounter, 6020 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 6294 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:06,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 6294 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:45:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2021-11-21 00:45:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3404. [2021-11-21 00:45:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3399 states have (on average 1.1582818476022358) internal successors, (3937), 3403 states have internal predecessors, (3937), 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) [2021-11-21 00:45:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 3937 transitions. [2021-11-21 00:45:07,388 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 3937 transitions. Word has length 139 [2021-11-21 00:45:07,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:07,388 INFO L470 AbstractCegarLoop]: Abstraction has 3404 states and 3937 transitions. [2021-11-21 00:45:07,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.7567567567567566) internal successors, (139), 36 states have internal predecessors, (139), 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) [2021-11-21 00:45:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 3937 transitions. [2021-11-21 00:45:07,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-21 00:45:07,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:07,390 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:45:07,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-21 00:45:07,390 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:45:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:07,390 INFO L85 PathProgramCache]: Analyzing trace with hash -522811545, now seen corresponding path program 1 times [2021-11-21 00:45:07,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:07,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907914174] [2021-11-21 00:45:07,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:07,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:07,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:07,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907914174] [2021-11-21 00:45:07,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907914174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:07,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:07,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:45:07,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825991766] [2021-11-21 00:45:07,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:07,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:45:07,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:07,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:45:07,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:45:07,536 INFO L87 Difference]: Start difference. First operand 3404 states and 3937 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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) [2021-11-21 00:45:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:09,120 INFO L93 Difference]: Finished difference Result 6880 states and 8817 transitions. [2021-11-21 00:45:09,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-21 00:45:09,121 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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 142 [2021-11-21 00:45:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:09,125 INFO L225 Difference]: With dead ends: 6880 [2021-11-21 00:45:09,125 INFO L226 Difference]: Without dead ends: 6032 [2021-11-21 00:45:09,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:45:09,127 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 759 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:09,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 1953 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2021-11-21 00:45:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 4064. [2021-11-21 00:45:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4064 states, 4059 states have (on average 1.1734417344173442) internal successors, (4763), 4063 states have internal predecessors, (4763), 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) [2021-11-21 00:45:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4064 states to 4064 states and 4763 transitions. [2021-11-21 00:45:09,914 INFO L78 Accepts]: Start accepts. Automaton has 4064 states and 4763 transitions. Word has length 142 [2021-11-21 00:45:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:09,914 INFO L470 AbstractCegarLoop]: Abstraction has 4064 states and 4763 transitions. [2021-11-21 00:45:09,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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) [2021-11-21 00:45:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4064 states and 4763 transitions. [2021-11-21 00:45:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-21 00:45:09,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:09,916 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:45:09,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-21 00:45:09,917 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:45:09,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1183704380, now seen corresponding path program 1 times [2021-11-21 00:45:09,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:09,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924829158] [2021-11-21 00:45:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:09,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:09,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:09,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924829158] [2021-11-21 00:45:09,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924829158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:09,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:09,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:45:09,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35023195] [2021-11-21 00:45:09,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:09,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:45:09,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:09,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:45:09,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:45:09,960 INFO L87 Difference]: Start difference. First operand 4064 states and 4763 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-21 00:45:10,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:10,972 INFO L93 Difference]: Finished difference Result 5703 states and 7030 transitions. [2021-11-21 00:45:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:45:10,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-11-21 00:45:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:10,977 INFO L225 Difference]: With dead ends: 5703 [2021-11-21 00:45:10,977 INFO L226 Difference]: Without dead ends: 4718 [2021-11-21 00:45:10,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:45:10,979 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:10,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 495 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:45:10,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4718 states. [2021-11-21 00:45:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4718 to 4074. [2021-11-21 00:45:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4069 states have (on average 1.1560579995084788) internal successors, (4704), 4073 states have internal predecessors, (4704), 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) [2021-11-21 00:45:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 4704 transitions. [2021-11-21 00:45:11,743 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 4704 transitions. Word has length 142 [2021-11-21 00:45:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:11,743 INFO L470 AbstractCegarLoop]: Abstraction has 4074 states and 4704 transitions. [2021-11-21 00:45:11,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-21 00:45:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 4704 transitions. [2021-11-21 00:45:11,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-21 00:45:11,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:11,747 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:45:11,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-21 00:45:11,747 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:45:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1187398464, now seen corresponding path program 1 times [2021-11-21 00:45:11,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:11,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782007949] [2021-11-21 00:45:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:11,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:11,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:11,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782007949] [2021-11-21 00:45:11,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782007949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:11,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:11,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:45:11,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022215442] [2021-11-21 00:45:11,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:11,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:45:11,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:11,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:45:11,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:45:11,914 INFO L87 Difference]: Start difference. First operand 4074 states and 4704 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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) [2021-11-21 00:45:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:14,456 INFO L93 Difference]: Finished difference Result 9974 states and 12782 transitions. [2021-11-21 00:45:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:45:14,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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 142 [2021-11-21 00:45:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:14,465 INFO L225 Difference]: With dead ends: 9974 [2021-11-21 00:45:14,466 INFO L226 Difference]: Without dead ends: 8556 [2021-11-21 00:45:14,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:45:14,468 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 787 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:14,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 2302 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:45:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8556 states. [2021-11-21 00:45:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8556 to 5508. [2021-11-21 00:45:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5508 states, 5503 states have (on average 1.2022533163728875) internal successors, (6616), 5507 states have internal predecessors, (6616), 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) [2021-11-21 00:45:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5508 states to 5508 states and 6616 transitions. [2021-11-21 00:45:15,741 INFO L78 Accepts]: Start accepts. Automaton has 5508 states and 6616 transitions. Word has length 142 [2021-11-21 00:45:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:15,742 INFO L470 AbstractCegarLoop]: Abstraction has 5508 states and 6616 transitions. [2021-11-21 00:45:15,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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) [2021-11-21 00:45:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5508 states and 6616 transitions. [2021-11-21 00:45:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-21 00:45:15,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:15,744 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:45:15,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-21 00:45:15,744 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:45:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:15,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1566056374, now seen corresponding path program 1 times [2021-11-21 00:45:15,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:15,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219336207] [2021-11-21 00:45:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:15,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:15,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:15,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219336207] [2021-11-21 00:45:15,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219336207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:15,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:15,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:45:15,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256543631] [2021-11-21 00:45:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:15,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:45:15,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:45:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:45:15,909 INFO L87 Difference]: Start difference. First operand 5508 states and 6616 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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) [2021-11-21 00:45:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:19,346 INFO L93 Difference]: Finished difference Result 11942 states and 15388 transitions. [2021-11-21 00:45:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 00:45:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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 142 [2021-11-21 00:45:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:19,357 INFO L225 Difference]: With dead ends: 11942 [2021-11-21 00:45:19,358 INFO L226 Difference]: Without dead ends: 10449 [2021-11-21 00:45:19,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:45:19,361 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 759 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:19,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 2579 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:45:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10449 states. [2021-11-21 00:45:21,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10449 to 7016. [2021-11-21 00:45:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7011 states have (on average 1.23063756953359) internal successors, (8628), 7015 states have internal predecessors, (8628), 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) [2021-11-21 00:45:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 8628 transitions. [2021-11-21 00:45:21,168 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 8628 transitions. Word has length 142 [2021-11-21 00:45:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:21,169 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 8628 transitions. [2021-11-21 00:45:21,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 states have internal predecessors, (142), 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) [2021-11-21 00:45:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 8628 transitions. [2021-11-21 00:45:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:45:21,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:21,171 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:45:21,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-21 00:45:21,171 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:45:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1702438832, now seen corresponding path program 1 times [2021-11-21 00:45:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816060122] [2021-11-21 00:45:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:21,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:25,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:25,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816060122] [2021-11-21 00:45:25,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816060122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:25,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:25,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-21 00:45:25,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509454778] [2021-11-21 00:45:25,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:25,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:45:25,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:25,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:45:25,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:45:25,865 INFO L87 Difference]: Start difference. First operand 7016 states and 8628 transitions. Second operand has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:45:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:36,797 INFO L93 Difference]: Finished difference Result 9837 states and 12420 transitions. [2021-11-21 00:45:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-21 00:45:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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 144 [2021-11-21 00:45:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:36,810 INFO L225 Difference]: With dead ends: 9837 [2021-11-21 00:45:36,810 INFO L226 Difference]: Without dead ends: 9833 [2021-11-21 00:45:36,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=593, Invalid=3567, Unknown=0, NotChecked=0, Total=4160 [2021-11-21 00:45:36,812 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 884 mSDsluCounter, 6626 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 6856 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:36,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 6856 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:45:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9833 states. [2021-11-21 00:45:38,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9833 to 7016. [2021-11-21 00:45:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7011 states have (on average 1.2304949365283127) internal successors, (8627), 7015 states have internal predecessors, (8627), 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) [2021-11-21 00:45:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 8627 transitions. [2021-11-21 00:45:38,527 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 8627 transitions. Word has length 144 [2021-11-21 00:45:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:38,527 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 8627 transitions. [2021-11-21 00:45:38,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:45:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 8627 transitions. [2021-11-21 00:45:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:45:38,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:38,530 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:45:38,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-21 00:45:38,531 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:45:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:38,531 INFO L85 PathProgramCache]: Analyzing trace with hash 478675105, now seen corresponding path program 1 times [2021-11-21 00:45:38,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:38,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132171144] [2021-11-21 00:45:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:38,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:44,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:44,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132171144] [2021-11-21 00:45:44,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132171144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:44,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:44,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-21 00:45:44,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867649766] [2021-11-21 00:45:44,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:44,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:45:44,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:44,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:45:44,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:45:44,450 INFO L87 Difference]: Start difference. First operand 7016 states and 8627 transitions. Second operand has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:46:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:02,298 INFO L93 Difference]: Finished difference Result 7361 states and 9075 transitions. [2021-11-21 00:46:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-21 00:46:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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 144 [2021-11-21 00:46:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:02,306 INFO L225 Difference]: With dead ends: 7361 [2021-11-21 00:46:02,306 INFO L226 Difference]: Without dead ends: 7354 [2021-11-21 00:46:02,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2021-11-21 00:46:02,308 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 1008 mSDsluCounter, 8324 mSDsCounter, 0 mSdLazyCounter, 4342 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 8560 SdHoareTripleChecker+Invalid, 4372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:02,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 8560 Invalid, 4372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 4342 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 00:46:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2021-11-21 00:46:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 7016. [2021-11-21 00:46:04,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7011 states have (on average 1.2303523035230353) internal successors, (8626), 7015 states have internal predecessors, (8626), 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) [2021-11-21 00:46:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 8626 transitions. [2021-11-21 00:46:04,039 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 8626 transitions. Word has length 144 [2021-11-21 00:46:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:04,039 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 8626 transitions. [2021-11-21 00:46:04,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:46:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 8626 transitions. [2021-11-21 00:46:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:46:04,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:04,042 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:46:04,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-21 00:46:04,042 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:46:04,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:04,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1053553612, now seen corresponding path program 1 times [2021-11-21 00:46:04,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:04,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386538730] [2021-11-21 00:46:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:04,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:46:11,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:11,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386538730] [2021-11-21 00:46:11,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386538730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:46:11,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:46:11,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-11-21 00:46:11,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37610356] [2021-11-21 00:46:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:46:11,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-21 00:46:11,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-21 00:46:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1443, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:46:11,215 INFO L87 Difference]: Start difference. First operand 7016 states and 8626 transitions. Second operand has 40 states, 40 states have (on average 3.6) internal successors, (144), 39 states have internal predecessors, (144), 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) [2021-11-21 00:46:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:30,932 INFO L93 Difference]: Finished difference Result 9837 states and 12418 transitions. [2021-11-21 00:46:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-21 00:46:30,933 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 39 states have internal predecessors, (144), 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 144 [2021-11-21 00:46:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:30,941 INFO L225 Difference]: With dead ends: 9837 [2021-11-21 00:46:30,941 INFO L226 Difference]: Without dead ends: 9833 [2021-11-21 00:46:30,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=712, Invalid=4118, Unknown=0, NotChecked=0, Total=4830 [2021-11-21 00:46:30,944 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 839 mSDsluCounter, 7379 mSDsCounter, 0 mSdLazyCounter, 4218 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 7609 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:30,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 7609 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4218 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-21 00:46:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9833 states. [2021-11-21 00:46:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9833 to 7016. [2021-11-21 00:46:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7011 states have (on average 1.2302096705177579) internal successors, (8625), 7015 states have internal predecessors, (8625), 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) [2021-11-21 00:46:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 8625 transitions. [2021-11-21 00:46:32,690 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 8625 transitions. Word has length 144 [2021-11-21 00:46:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:32,690 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 8625 transitions. [2021-11-21 00:46:32,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 39 states have internal predecessors, (144), 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) [2021-11-21 00:46:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 8625 transitions. [2021-11-21 00:46:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:46:32,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:32,692 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:46:32,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-21 00:46:32,692 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:46:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1127560325, now seen corresponding path program 1 times [2021-11-21 00:46:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:32,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952783729] [2021-11-21 00:46:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:32,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:46:38,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:38,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952783729] [2021-11-21 00:46:38,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952783729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:46:38,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:46:38,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-21 00:46:38,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26101276] [2021-11-21 00:46:38,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:46:38,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:46:38,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:38,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:46:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:46:38,041 INFO L87 Difference]: Start difference. First operand 7016 states and 8625 transitions. Second operand has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:46:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:49,236 INFO L93 Difference]: Finished difference Result 9911 states and 12519 transitions. [2021-11-21 00:46:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-21 00:46:49,236 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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 144 [2021-11-21 00:46:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:49,246 INFO L225 Difference]: With dead ends: 9911 [2021-11-21 00:46:49,246 INFO L226 Difference]: Without dead ends: 9904 [2021-11-21 00:46:49,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=605, Invalid=2817, Unknown=0, NotChecked=0, Total=3422 [2021-11-21 00:46:49,248 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 804 mSDsluCounter, 5630 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 5908 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:49,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 5908 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:46:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9904 states. [2021-11-21 00:46:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9904 to 7016. [2021-11-21 00:46:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7011 states have (on average 1.2300670375124805) internal successors, (8624), 7015 states have internal predecessors, (8624), 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) [2021-11-21 00:46:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 8624 transitions. [2021-11-21 00:46:51,049 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 8624 transitions. Word has length 144 [2021-11-21 00:46:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:51,049 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 8624 transitions. [2021-11-21 00:46:51,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:46:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 8624 transitions. [2021-11-21 00:46:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:46:51,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:51,053 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:46:51,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-21 00:46:51,053 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:46:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1601449789, now seen corresponding path program 1 times [2021-11-21 00:46:51,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:51,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218156996] [2021-11-21 00:46:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:51,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:46:54,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:54,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218156996] [2021-11-21 00:46:54,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218156996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:46:54,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:46:54,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-21 00:46:54,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056114371] [2021-11-21 00:46:54,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:46:54,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-21 00:46:54,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:54,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-21 00:46:54,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:46:54,058 INFO L87 Difference]: Start difference. First operand 7016 states and 8624 transitions. Second operand has 27 states, 27 states have (on average 5.333333333333333) internal successors, (144), 26 states have internal predecessors, (144), 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) [2021-11-21 00:47:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:47:03,880 INFO L93 Difference]: Finished difference Result 7287 states and 8971 transitions. [2021-11-21 00:47:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 00:47:03,881 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.333333333333333) internal successors, (144), 26 states have internal predecessors, (144), 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 144 [2021-11-21 00:47:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:47:03,887 INFO L225 Difference]: With dead ends: 7287 [2021-11-21 00:47:03,887 INFO L226 Difference]: Without dead ends: 7273 [2021-11-21 00:47:03,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=451, Invalid=1711, Unknown=0, NotChecked=0, Total=2162 [2021-11-21 00:47:03,889 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1028 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 3429 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 8399 SdHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:47:03,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 8399 Invalid, 3450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3429 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-21 00:47:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7273 states. [2021-11-21 00:47:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7273 to 7009. [2021-11-21 00:47:05,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7005 states have (on average 1.2298358315488938) internal successors, (8615), 7008 states have internal predecessors, (8615), 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) [2021-11-21 00:47:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 8615 transitions. [2021-11-21 00:47:05,658 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 8615 transitions. Word has length 144 [2021-11-21 00:47:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:47:05,659 INFO L470 AbstractCegarLoop]: Abstraction has 7009 states and 8615 transitions. [2021-11-21 00:47:05,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.333333333333333) internal successors, (144), 26 states have internal predecessors, (144), 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) [2021-11-21 00:47:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 8615 transitions. [2021-11-21 00:47:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:47:05,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:47:05,661 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:47:05,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-21 00:47:05,661 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:47:05,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:47:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash -957051559, now seen corresponding path program 1 times [2021-11-21 00:47:05,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:47:05,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325614487] [2021-11-21 00:47:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:47:05,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:47:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:47:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:10,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:47:10,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325614487] [2021-11-21 00:47:10,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325614487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:47:10,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:47:10,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-21 00:47:10,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162470620] [2021-11-21 00:47:10,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:47:10,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-21 00:47:10,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:47:10,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-21 00:47:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 00:47:10,293 INFO L87 Difference]: Start difference. First operand 7009 states and 8615 transitions. Second operand has 36 states, 36 states have (on average 4.0) internal successors, (144), 35 states have internal predecessors, (144), 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) [2021-11-21 00:47:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:47:20,692 INFO L93 Difference]: Finished difference Result 9827 states and 12404 transitions. [2021-11-21 00:47:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-21 00:47:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.0) internal successors, (144), 35 states have internal predecessors, (144), 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 144 [2021-11-21 00:47:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:47:20,704 INFO L225 Difference]: With dead ends: 9827 [2021-11-21 00:47:20,704 INFO L226 Difference]: Without dead ends: 9823 [2021-11-21 00:47:20,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=529, Invalid=3011, Unknown=0, NotChecked=0, Total=3540 [2021-11-21 00:47:20,707 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 625 mSDsluCounter, 6586 mSDsCounter, 0 mSdLazyCounter, 3939 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 6859 SdHoareTripleChecker+Invalid, 3961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:47:20,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 6859 Invalid, 3961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3939 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 00:47:20,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9823 states. [2021-11-21 00:47:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9823 to 7009. [2021-11-21 00:47:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7005 states have (on average 1.2296930763740186) internal successors, (8614), 7008 states have internal predecessors, (8614), 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) [2021-11-21 00:47:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 8614 transitions. [2021-11-21 00:47:22,503 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 8614 transitions. Word has length 144 [2021-11-21 00:47:22,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:47:22,503 INFO L470 AbstractCegarLoop]: Abstraction has 7009 states and 8614 transitions. [2021-11-21 00:47:22,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.0) internal successors, (144), 35 states have internal predecessors, (144), 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) [2021-11-21 00:47:22,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 8614 transitions. [2021-11-21 00:47:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:47:22,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:47:22,505 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:47:22,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-21 00:47:22,506 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:47:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:47:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2046955264, now seen corresponding path program 1 times [2021-11-21 00:47:22,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:47:22,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710136571] [2021-11-21 00:47:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:47:22,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:47:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:47:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:27,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:47:27,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710136571] [2021-11-21 00:47:27,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710136571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:47:27,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:47:27,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-21 00:47:27,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106143715] [2021-11-21 00:47:27,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:47:27,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:47:27,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:47:27,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:47:27,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:47:27,696 INFO L87 Difference]: Start difference. First operand 7009 states and 8614 transitions. Second operand has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:47:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:47:37,777 INFO L93 Difference]: Finished difference Result 9827 states and 12403 transitions. [2021-11-21 00:47:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-21 00:47:37,778 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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 144 [2021-11-21 00:47:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:47:37,787 INFO L225 Difference]: With dead ends: 9827 [2021-11-21 00:47:37,787 INFO L226 Difference]: Without dead ends: 9823 [2021-11-21 00:47:37,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=649, Invalid=3641, Unknown=0, NotChecked=0, Total=4290 [2021-11-21 00:47:37,790 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 970 mSDsluCounter, 5017 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 5349 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:47:37,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 5349 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3241 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-21 00:47:37,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9823 states. [2021-11-21 00:47:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9823 to 7009. [2021-11-21 00:47:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7005 states have (on average 1.2295503211991434) internal successors, (8613), 7008 states have internal predecessors, (8613), 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) [2021-11-21 00:47:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 8613 transitions. [2021-11-21 00:47:39,588 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 8613 transitions. Word has length 144 [2021-11-21 00:47:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:47:39,588 INFO L470 AbstractCegarLoop]: Abstraction has 7009 states and 8613 transitions. [2021-11-21 00:47:39,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:47:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 8613 transitions. [2021-11-21 00:47:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:47:39,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:47:39,590 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:47:39,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-21 00:47:39,591 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:47:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:47:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash 778556903, now seen corresponding path program 1 times [2021-11-21 00:47:39,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:47:39,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100317578] [2021-11-21 00:47:39,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:47:39,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:47:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:47:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:45,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:47:45,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100317578] [2021-11-21 00:47:45,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100317578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:47:45,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:47:45,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-11-21 00:47:45,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357192953] [2021-11-21 00:47:45,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:47:45,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-21 00:47:45,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:47:45,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-21 00:47:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1354, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 00:47:45,710 INFO L87 Difference]: Start difference. First operand 7009 states and 8613 transitions. Second operand has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 38 states have internal predecessors, (144), 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) [2021-11-21 00:47:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:47:58,952 INFO L93 Difference]: Finished difference Result 9827 states and 12402 transitions. [2021-11-21 00:47:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-21 00:47:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 38 states have internal predecessors, (144), 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 144 [2021-11-21 00:47:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:47:58,961 INFO L225 Difference]: With dead ends: 9827 [2021-11-21 00:47:58,961 INFO L226 Difference]: Without dead ends: 9823 [2021-11-21 00:47:58,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=624, Invalid=3798, Unknown=0, NotChecked=0, Total=4422 [2021-11-21 00:47:58,963 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 674 mSDsluCounter, 7743 mSDsCounter, 0 mSdLazyCounter, 4480 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 8001 SdHoareTripleChecker+Invalid, 4497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:47:58,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 8001 Invalid, 4497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4480 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-21 00:47:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9823 states. [2021-11-21 00:48:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9823 to 7009. [2021-11-21 00:48:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7005 states have (on average 1.2294075660242685) internal successors, (8612), 7008 states have internal predecessors, (8612), 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) [2021-11-21 00:48:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 8612 transitions. [2021-11-21 00:48:00,823 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 8612 transitions. Word has length 144 [2021-11-21 00:48:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:00,823 INFO L470 AbstractCegarLoop]: Abstraction has 7009 states and 8612 transitions. [2021-11-21 00:48:00,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 38 states have internal predecessors, (144), 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) [2021-11-21 00:48:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 8612 transitions. [2021-11-21 00:48:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:48:00,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:00,825 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:48:00,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-21 00:48:00,825 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:48:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1982116892, now seen corresponding path program 1 times [2021-11-21 00:48:00,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:00,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543798506] [2021-11-21 00:48:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:00,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:48:07,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:07,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543798506] [2021-11-21 00:48:07,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543798506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:07,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:07,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-21 00:48:07,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404098023] [2021-11-21 00:48:07,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:07,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:48:07,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:48:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:48:07,844 INFO L87 Difference]: Start difference. First operand 7009 states and 8612 transitions. Second operand has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:48:19,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:19,750 INFO L93 Difference]: Finished difference Result 9827 states and 12401 transitions. [2021-11-21 00:48:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-21 00:48:19,750 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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 144 [2021-11-21 00:48:19,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:19,758 INFO L225 Difference]: With dead ends: 9827 [2021-11-21 00:48:19,759 INFO L226 Difference]: Without dead ends: 9823 [2021-11-21 00:48:19,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=586, Invalid=2954, Unknown=0, NotChecked=0, Total=3540 [2021-11-21 00:48:19,761 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 690 mSDsluCounter, 7397 mSDsCounter, 0 mSdLazyCounter, 4236 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 7643 SdHoareTripleChecker+Invalid, 4250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:19,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 7643 Invalid, 4250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4236 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-21 00:48:19,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9823 states. [2021-11-21 00:48:21,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9823 to 7009. [2021-11-21 00:48:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7005 states have (on average 1.2292648108493933) internal successors, (8611), 7008 states have internal predecessors, (8611), 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) [2021-11-21 00:48:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 8611 transitions. [2021-11-21 00:48:21,596 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 8611 transitions. Word has length 144 [2021-11-21 00:48:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:21,596 INFO L470 AbstractCegarLoop]: Abstraction has 7009 states and 8611 transitions. [2021-11-21 00:48:21,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 37 states have internal predecessors, (144), 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) [2021-11-21 00:48:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 8611 transitions. [2021-11-21 00:48:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:48:21,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:21,598 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:48:21,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-21 00:48:21,598 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:48:21,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:21,599 INFO L85 PathProgramCache]: Analyzing trace with hash 512661763, now seen corresponding path program 1 times [2021-11-21 00:48:21,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:21,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634292724] [2021-11-21 00:48:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:21,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:48:23,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:23,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634292724] [2021-11-21 00:48:23,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634292724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:23,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:23,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-21 00:48:23,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13230059] [2021-11-21 00:48:23,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:23,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-21 00:48:23,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-21 00:48:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:48:23,579 INFO L87 Difference]: Start difference. First operand 7009 states and 8611 transitions. Second operand has 23 states, 23 states have (on average 6.260869565217392) internal successors, (144), 22 states have internal predecessors, (144), 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) [2021-11-21 00:48:31,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:31,154 INFO L93 Difference]: Finished difference Result 14742 states and 18993 transitions. [2021-11-21 00:48:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 00:48:31,155 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.260869565217392) internal successors, (144), 22 states have internal predecessors, (144), 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 144 [2021-11-21 00:48:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:31,176 INFO L225 Difference]: With dead ends: 14742 [2021-11-21 00:48:31,176 INFO L226 Difference]: Without dead ends: 14738 [2021-11-21 00:48:31,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 00:48:31,179 INFO L933 BasicCegarLoop]: 734 mSDtfsCounter, 1149 mSDsluCounter, 6974 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 7462 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:31,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 7462 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-21 00:48:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14738 states. [2021-11-21 00:48:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14738 to 7005. [2021-11-21 00:48:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7005 states, 7002 states have (on average 1.2289345901171094) internal successors, (8605), 7004 states have internal predecessors, (8605), 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) [2021-11-21 00:48:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 8605 transitions. [2021-11-21 00:48:33,123 INFO L78 Accepts]: Start accepts. Automaton has 7005 states and 8605 transitions. Word has length 144 [2021-11-21 00:48:33,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:33,124 INFO L470 AbstractCegarLoop]: Abstraction has 7005 states and 8605 transitions. [2021-11-21 00:48:33,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.260869565217392) internal successors, (144), 22 states have internal predecessors, (144), 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) [2021-11-21 00:48:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 7005 states and 8605 transitions. [2021-11-21 00:48:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:48:33,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:33,126 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:48:33,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-21 00:48:33,126 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:48:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:33,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1169858265, now seen corresponding path program 1 times [2021-11-21 00:48:33,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:33,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155300338] [2021-11-21 00:48:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:33,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:48:42,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:42,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155300338] [2021-11-21 00:48:42,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155300338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:42,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:42,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-21 00:48:42,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734436309] [2021-11-21 00:48:42,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:42,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-21 00:48:42,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-21 00:48:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:48:42,317 INFO L87 Difference]: Start difference. First operand 7005 states and 8605 transitions. Second operand has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 36 states have internal predecessors, (144), 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) [2021-11-21 00:49:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:49:00,845 INFO L93 Difference]: Finished difference Result 7548 states and 9315 transitions. [2021-11-21 00:49:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-21 00:49:00,845 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 36 states have internal predecessors, (144), 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 144 [2021-11-21 00:49:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:49:00,851 INFO L225 Difference]: With dead ends: 7548 [2021-11-21 00:49:00,851 INFO L226 Difference]: Without dead ends: 7541 [2021-11-21 00:49:00,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=689, Invalid=3601, Unknown=0, NotChecked=0, Total=4290 [2021-11-21 00:49:00,853 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1077 mSDsluCounter, 10173 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 10441 SdHoareTripleChecker+Invalid, 5720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:49:00,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 10441 Invalid, 5720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5675 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-21 00:49:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7541 states. [2021-11-21 00:49:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7541 to 6998. [2021-11-21 00:49:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6998 states, 6996 states have (on average 1.2289879931389365) internal successors, (8598), 6997 states have internal predecessors, (8598), 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) [2021-11-21 00:49:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6998 states to 6998 states and 8598 transitions. [2021-11-21 00:49:02,737 INFO L78 Accepts]: Start accepts. Automaton has 6998 states and 8598 transitions. Word has length 144 [2021-11-21 00:49:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:49:02,737 INFO L470 AbstractCegarLoop]: Abstraction has 6998 states and 8598 transitions. [2021-11-21 00:49:02,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 36 states have internal predecessors, (144), 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) [2021-11-21 00:49:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6998 states and 8598 transitions. [2021-11-21 00:49:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-21 00:49:02,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:49:02,739 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:49:02,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-21 00:49:02,740 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:49:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:49:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash 149172917, now seen corresponding path program 1 times [2021-11-21 00:49:02,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:49:02,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104012502] [2021-11-21 00:49:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:49:02,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:49:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:49:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:49:09,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:49:09,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104012502] [2021-11-21 00:49:09,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104012502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:49:09,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:49:09,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-11-21 00:49:09,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142996752] [2021-11-21 00:49:09,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:49:09,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-21 00:49:09,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:49:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-21 00:49:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2021-11-21 00:49:09,936 INFO L87 Difference]: Start difference. First operand 6998 states and 8598 transitions. Second operand has 42 states, 42 states have (on average 3.4523809523809526) internal successors, (145), 41 states have internal predecessors, (145), 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) [2021-11-21 00:49:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:49:21,824 INFO L93 Difference]: Finished difference Result 7080 states and 8705 transitions. [2021-11-21 00:49:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-21 00:49:21,825 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.4523809523809526) internal successors, (145), 41 states have internal predecessors, (145), 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 145 [2021-11-21 00:49:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:49:21,831 INFO L225 Difference]: With dead ends: 7080 [2021-11-21 00:49:21,831 INFO L226 Difference]: Without dead ends: 6993 [2021-11-21 00:49:21,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=716, Invalid=3976, Unknown=0, NotChecked=0, Total=4692 [2021-11-21 00:49:21,833 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 797 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 3731 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 6732 SdHoareTripleChecker+Invalid, 3771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:49:21,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 6732 Invalid, 3771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3731 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 00:49:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6993 states. [2021-11-21 00:49:23,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6993 to 6991. [2021-11-21 00:49:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6989 states have (on average 1.2290742595507225) internal successors, (8590), 6990 states have internal predecessors, (8590), 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) [2021-11-21 00:49:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 8590 transitions. [2021-11-21 00:49:23,704 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 8590 transitions. Word has length 145 [2021-11-21 00:49:23,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:49:23,705 INFO L470 AbstractCegarLoop]: Abstraction has 6991 states and 8590 transitions. [2021-11-21 00:49:23,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.4523809523809526) internal successors, (145), 41 states have internal predecessors, (145), 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) [2021-11-21 00:49:23,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 8590 transitions. [2021-11-21 00:49:23,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-21 00:49:23,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:49:23,707 INFO L514 BasicCegarLoop]: 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] [2021-11-21 00:49:23,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-21 00:49:23,708 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:49:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:49:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -903893709, now seen corresponding path program 1 times [2021-11-21 00:49:23,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:49:23,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117997881] [2021-11-21 00:49:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:49:23,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:49:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat