./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.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_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/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_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/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_35c9cb49-22f8-4dee-b149-17b42ae900a3/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 8381803db0f296b6c475c94ca7dd8f9a2c79c383b82b37638a653c8556f3f15c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:36:18,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:36:18,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:36:18,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:36:18,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:36:18,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:36:18,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:36:18,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:36:18,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:36:18,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:36:18,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:36:18,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:36:18,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:36:18,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:36:18,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:36:18,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:36:18,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:36:18,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:36:18,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:36:18,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:36:18,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:36:18,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:36:18,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:36:18,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:36:18,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:36:18,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:36:18,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:36:18,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:36:18,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:36:18,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:36:18,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:36:18,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:36:18,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:36:18,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:36:18,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:36:18,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:36:18,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:36:18,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:36:18,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:36:18,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:36:18,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:36:18,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:36:18,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:36:18,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:36:18,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:36:18,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:36:18,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:36:18,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:36:18,952 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:36:18,953 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:36:18,953 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:36:18,953 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:36:18,954 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:36:18,954 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:36:18,954 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:36:18,954 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:36:18,955 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:36:18,955 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:36:18,955 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:36:18,956 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:36:18,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:36:18,957 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:36:18,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:36:18,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:36:18,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:36:18,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:36:18,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:36:18,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:36:18,959 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:36:18,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:36:18,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:36:18,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:36:18,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:36:18,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:36:18,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:18,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:36:18,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:36:18,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:36:18,969 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:36:18,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:36:18,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:36:18,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:36:18,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:36:18,970 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8381803db0f296b6c475c94ca7dd8f9a2c79c383b82b37638a653c8556f3f15c [2021-11-20 23:36:19,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:36:19,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:36:19,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:36:19,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:36:19,351 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:36:19,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-20 23:36:19,423 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/data/05b604cc7/c7c9cfa119314a7294a32dc5e3255d0c/FLAG6acce7f05 [2021-11-20 23:36:20,090 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:36:20,091 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-20 23:36:20,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/data/05b604cc7/c7c9cfa119314a7294a32dc5e3255d0c/FLAG6acce7f05 [2021-11-20 23:36:20,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/data/05b604cc7/c7c9cfa119314a7294a32dc5e3255d0c [2021-11-20 23:36:20,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:36:20,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:36:20,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:20,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:36:20,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:36:20,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:20" (1/1) ... [2021-11-20 23:36:20,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c04c153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:20, skipping insertion in model container [2021-11-20 23:36:20,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:36:20" (1/1) ... [2021-11-20 23:36:20,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:36:20,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:36:20,806 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11561,11574] [2021-11-20 23:36:20,874 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15618,15631] [2021-11-20 23:36:20,892 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16839,16852] [2021-11-20 23:36:20,899 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17545,17558] [2021-11-20 23:36:20,911 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19131,19144] [2021-11-20 23:36:20,918 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19837,19850] [2021-11-20 23:36:20,926 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20908,20921] [2021-11-20 23:36:20,942 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23398,23411] [2021-11-20 23:36:20,949 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-20 23:36:20,957 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25144,25157] [2021-11-20 23:36:20,969 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27082,27095] [2021-11-20 23:36:21,010 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31116,31129] [2021-11-20 23:36:21,015 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31825,31838] [2021-11-20 23:36:21,023 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32899,32912] [2021-11-20 23:36:21,062 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34874,34887] [2021-11-20 23:36:21,096 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38255,38268] [2021-11-20 23:36:21,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:36:21,325 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:36:21,433 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[11561,11574] [2021-11-20 23:36:21,465 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[15618,15631] [2021-11-20 23:36:21,480 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[16839,16852] [2021-11-20 23:36:21,489 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[17545,17558] [2021-11-20 23:36:21,506 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19131,19144] [2021-11-20 23:36:21,515 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19837,19850] [2021-11-20 23:36:21,528 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20908,20921] [2021-11-20 23:36:21,555 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23398,23411] [2021-11-20 23:36:21,564 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-20 23:36:21,576 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[25144,25157] [2021-11-20 23:36:21,598 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[27082,27095] [2021-11-20 23:36:21,642 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31116,31129] [2021-11-20 23:36:21,652 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[31825,31838] [2021-11-20 23:36:21,665 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[32899,32912] [2021-11-20 23:36:21,689 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[34874,34887] [2021-11-20 23:36:21,728 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_35c9cb49-22f8-4dee-b149-17b42ae900a3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[38255,38268] [2021-11-20 23:36:21,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:36:21,947 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:36:21,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21 WrapperNode [2021-11-20 23:36:21,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:36:21,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:36:21,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:36:21,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:36:21,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:21,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,100 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3485 [2021-11-20 23:36:22,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:36:22,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:36:22,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:36:22,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:36:22,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:36:22,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:36:22,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:36:22,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:36:22,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (1/1) ... [2021-11-20 23:36:22,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:36:22,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:36:22,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:36:22,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:36:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:36:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:36:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:36:22,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:36:22,650 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:36:22,668 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:36:24,512 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:36:24,678 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:36:24,678 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:36:24,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:24 BoogieIcfgContainer [2021-11-20 23:36:24,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:36:24,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:36:24,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:36:24,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:36:24,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:36:20" (1/3) ... [2021-11-20 23:36:24,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e678ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:24, skipping insertion in model container [2021-11-20 23:36:24,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:36:21" (2/3) ... [2021-11-20 23:36:24,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e678ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:24, skipping insertion in model container [2021-11-20 23:36:24,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:24" (3/3) ... [2021-11-20 23:36:24,690 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-20 23:36:24,696 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:36:24,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-20 23:36:24,750 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:36:24,756 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 [2021-11-20 23:36:24,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-20 23:36:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 606 states, 589 states have (on average 1.8522920203735145) internal successors, (1091), 605 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 23:36:24,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:24,809 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] [2021-11-20 23:36:24,810 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 533676138, now seen corresponding path program 1 times [2021-11-20 23:36:24,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:24,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462314451] [2021-11-20 23:36:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:24,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:25,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:25,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462314451] [2021-11-20 23:36:25,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462314451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:25,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:25,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:25,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312381768] [2021-11-20 23:36:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:25,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:25,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:25,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:25,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:25,348 INFO L87 Difference]: Start difference. First operand has 606 states, 589 states have (on average 1.8522920203735145) internal successors, (1091), 605 states have internal predecessors, (1091), 0 states have call successors, (0), 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 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:26,021 INFO L93 Difference]: Finished difference Result 929 states and 1611 transitions. [2021-11-20 23:36:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:26,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-20 23:36:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:26,052 INFO L225 Difference]: With dead ends: 929 [2021-11-20 23:36:26,053 INFO L226 Difference]: Without dead ends: 488 [2021-11-20 23:36:26,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:26,072 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2416 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:26,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 596 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:36:26,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-20 23:36:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2021-11-20 23:36:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 472 states have (on average 1.2796610169491525) internal successors, (604), 487 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 604 transitions. [2021-11-20 23:36:26,186 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 604 transitions. Word has length 71 [2021-11-20 23:36:26,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:26,187 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 604 transitions. [2021-11-20 23:36:26,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 604 transitions. [2021-11-20 23:36:26,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 23:36:26,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:26,200 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] [2021-11-20 23:36:26,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:36:26,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1104820237, now seen corresponding path program 1 times [2021-11-20 23:36:26,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:26,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954590663] [2021-11-20 23:36:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:26,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:26,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:26,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954590663] [2021-11-20 23:36:26,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954590663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:26,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:26,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:26,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373013217] [2021-11-20 23:36:26,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:26,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:26,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:26,346 INFO L87 Difference]: Start difference. First operand 488 states and 604 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:26,657 INFO L93 Difference]: Finished difference Result 805 states and 1022 transitions. [2021-11-20 23:36:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:26,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-20 23:36:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:26,660 INFO L225 Difference]: With dead ends: 805 [2021-11-20 23:36:26,660 INFO L226 Difference]: Without dead ends: 421 [2021-11-20 23:36:26,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:26,662 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1537 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:26,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 311 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:36:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-20 23:36:26,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-20 23:36:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 405 states have (on average 1.3037037037037038) internal successors, (528), 420 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 528 transitions. [2021-11-20 23:36:26,684 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 528 transitions. Word has length 72 [2021-11-20 23:36:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:26,685 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 528 transitions. [2021-11-20 23:36:26,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 528 transitions. [2021-11-20 23:36:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 23:36:26,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:26,687 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] [2021-11-20 23:36:26,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:36:26,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:26,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:26,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1559303919, now seen corresponding path program 1 times [2021-11-20 23:36:26,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:26,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591386198] [2021-11-20 23:36:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:26,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:26,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:26,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591386198] [2021-11-20 23:36:26,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591386198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:26,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:26,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:26,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169483461] [2021-11-20 23:36:26,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:26,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:26,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:26,788 INFO L87 Difference]: Start difference. First operand 421 states and 528 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:27,113 INFO L93 Difference]: Finished difference Result 738 states and 945 transitions. [2021-11-20 23:36:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-20 23:36:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:27,118 INFO L225 Difference]: With dead ends: 738 [2021-11-20 23:36:27,119 INFO L226 Difference]: Without dead ends: 395 [2021-11-20 23:36:27,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:27,123 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 1391 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:27,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 292 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:36:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-20 23:36:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2021-11-20 23:36:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 379 states have (on average 1.3113456464379947) internal successors, (497), 394 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 497 transitions. [2021-11-20 23:36:27,149 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 497 transitions. Word has length 73 [2021-11-20 23:36:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:27,149 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 497 transitions. [2021-11-20 23:36:27,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 497 transitions. [2021-11-20 23:36:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 23:36:27,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:27,153 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] [2021-11-20 23:36:27,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:36:27,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1409781752, now seen corresponding path program 1 times [2021-11-20 23:36:27,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:27,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011956731] [2021-11-20 23:36:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:27,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:27,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:27,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011956731] [2021-11-20 23:36:27,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011956731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:27,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:27,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:27,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690101763] [2021-11-20 23:36:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:27,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:27,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:27,294 INFO L87 Difference]: Start difference. First operand 395 states and 497 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:27,563 INFO L93 Difference]: Finished difference Result 712 states and 913 transitions. [2021-11-20 23:36:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:27,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-20 23:36:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:27,566 INFO L225 Difference]: With dead ends: 712 [2021-11-20 23:36:27,566 INFO L226 Difference]: Without dead ends: 376 [2021-11-20 23:36:27,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:27,568 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 1364 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:27,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 281 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:36:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-20 23:36:27,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-20 23:36:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 360 states have (on average 1.3194444444444444) internal successors, (475), 375 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 475 transitions. [2021-11-20 23:36:27,608 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 475 transitions. Word has length 74 [2021-11-20 23:36:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:27,608 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 475 transitions. [2021-11-20 23:36:27,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 475 transitions. [2021-11-20 23:36:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 23:36:27,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:27,610 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] [2021-11-20 23:36:27,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:36:27,611 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:27,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash 254667180, now seen corresponding path program 1 times [2021-11-20 23:36:27,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:27,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255773005] [2021-11-20 23:36:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:27,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:27,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:27,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255773005] [2021-11-20 23:36:27,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255773005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:27,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:27,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:27,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322528872] [2021-11-20 23:36:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:27,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:27,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:27,687 INFO L87 Difference]: Start difference. First operand 376 states and 475 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:28,115 INFO L93 Difference]: Finished difference Result 693 states and 890 transitions. [2021-11-20 23:36:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:28,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-20 23:36:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:28,118 INFO L225 Difference]: With dead ends: 693 [2021-11-20 23:36:28,118 INFO L226 Difference]: Without dead ends: 371 [2021-11-20 23:36:28,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:28,120 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1268 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:28,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1268 Valid, 256 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:36:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-20 23:36:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-11-20 23:36:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.3183098591549296) internal successors, (468), 370 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 468 transitions. [2021-11-20 23:36:28,145 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 468 transitions. Word has length 75 [2021-11-20 23:36:28,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:28,146 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 468 transitions. [2021-11-20 23:36:28,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 468 transitions. [2021-11-20 23:36:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-20 23:36:28,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:28,148 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] [2021-11-20 23:36:28,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:36:28,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:28,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1435179207, now seen corresponding path program 1 times [2021-11-20 23:36:28,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:28,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849476307] [2021-11-20 23:36:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:28,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:28,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:28,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849476307] [2021-11-20 23:36:28,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849476307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:28,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:28,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:28,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458559812] [2021-11-20 23:36:28,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:28,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:28,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:28,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:28,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:28,362 INFO L87 Difference]: Start difference. First operand 371 states and 468 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:29,414 INFO L93 Difference]: Finished difference Result 721 states and 916 transitions. [2021-11-20 23:36:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-20 23:36:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:29,420 INFO L225 Difference]: With dead ends: 721 [2021-11-20 23:36:29,420 INFO L226 Difference]: Without dead ends: 652 [2021-11-20 23:36:29,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:36:29,424 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 2021 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:29,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2021 Valid, 1251 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-20 23:36:29,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 371. [2021-11-20 23:36:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.315492957746479) internal successors, (467), 370 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 467 transitions. [2021-11-20 23:36:29,460 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 467 transitions. Word has length 76 [2021-11-20 23:36:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:29,461 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 467 transitions. [2021-11-20 23:36:29,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 467 transitions. [2021-11-20 23:36:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-20 23:36:29,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:29,464 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] [2021-11-20 23:36:29,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:36:29,464 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:29,465 INFO L85 PathProgramCache]: Analyzing trace with hash 980279151, now seen corresponding path program 1 times [2021-11-20 23:36:29,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:29,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508830536] [2021-11-20 23:36:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:29,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:29,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508830536] [2021-11-20 23:36:29,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508830536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:29,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:29,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:29,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179585897] [2021-11-20 23:36:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:29,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:29,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:29,689 INFO L87 Difference]: Start difference. First operand 371 states and 467 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:30,829 INFO L93 Difference]: Finished difference Result 764 states and 970 transitions. [2021-11-20 23:36:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:36:30,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-20 23:36:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:30,834 INFO L225 Difference]: With dead ends: 764 [2021-11-20 23:36:30,834 INFO L226 Difference]: Without dead ends: 656 [2021-11-20 23:36:30,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:36:30,835 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1688 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:30,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1688 Valid, 1581 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:36:30,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-20 23:36:30,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 371. [2021-11-20 23:36:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.3126760563380282) internal successors, (466), 370 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 466 transitions. [2021-11-20 23:36:30,871 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 466 transitions. Word has length 76 [2021-11-20 23:36:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:30,871 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 466 transitions. [2021-11-20 23:36:30,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 466 transitions. [2021-11-20 23:36:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-20 23:36:30,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:30,873 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] [2021-11-20 23:36:30,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:36:30,873 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash -612595194, now seen corresponding path program 1 times [2021-11-20 23:36:30,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548454256] [2021-11-20 23:36:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:30,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:30,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:30,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548454256] [2021-11-20 23:36:30,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548454256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:30,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:30,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:36:30,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292471090] [2021-11-20 23:36:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:30,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:36:30,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:36:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:30,987 INFO L87 Difference]: Start difference. First operand 371 states and 466 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:31,702 INFO L93 Difference]: Finished difference Result 696 states and 848 transitions. [2021-11-20 23:36:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:36:31,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-20 23:36:31,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:31,706 INFO L225 Difference]: With dead ends: 696 [2021-11-20 23:36:31,707 INFO L226 Difference]: Without dead ends: 504 [2021-11-20 23:36:31,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:36:31,708 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2038 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:31,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 605 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:36:31,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-11-20 23:36:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 371. [2021-11-20 23:36:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.3098591549295775) internal successors, (465), 370 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 465 transitions. [2021-11-20 23:36:31,752 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 465 transitions. Word has length 76 [2021-11-20 23:36:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:31,752 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 465 transitions. [2021-11-20 23:36:31,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 465 transitions. [2021-11-20 23:36:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:36:31,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:31,755 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] [2021-11-20 23:36:31,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:36:31,755 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -988049107, now seen corresponding path program 1 times [2021-11-20 23:36:31,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:31,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901628814] [2021-11-20 23:36:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:31,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:32,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:32,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901628814] [2021-11-20 23:36:32,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901628814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:32,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:32,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:36:32,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807213134] [2021-11-20 23:36:32,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:32,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:36:32,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:32,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:36:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:32,073 INFO L87 Difference]: Start difference. First operand 371 states and 465 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:34,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:34,399 INFO L93 Difference]: Finished difference Result 1046 states and 1334 transitions. [2021-11-20 23:36:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:36:34,400 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-20 23:36:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:34,407 INFO L225 Difference]: With dead ends: 1046 [2021-11-20 23:36:34,407 INFO L226 Difference]: Without dead ends: 968 [2021-11-20 23:36:34,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:36:34,412 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 3973 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3973 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:34,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3973 Valid, 1668 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:36:34,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-20 23:36:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 375. [2021-11-20 23:36:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.3064066852367688) internal successors, (469), 374 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 469 transitions. [2021-11-20 23:36:34,494 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 469 transitions. Word has length 78 [2021-11-20 23:36:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:34,495 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 469 transitions. [2021-11-20 23:36:34,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 469 transitions. [2021-11-20 23:36:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:36:34,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:34,498 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] [2021-11-20 23:36:34,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:36:34,498 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:34,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:34,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1396894335, now seen corresponding path program 1 times [2021-11-20 23:36:34,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:34,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072418814] [2021-11-20 23:36:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:34,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:34,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:34,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072418814] [2021-11-20 23:36:34,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072418814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:34,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:34,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:34,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035363413] [2021-11-20 23:36:34,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:34,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:34,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:34,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:34,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:34,699 INFO L87 Difference]: Start difference. First operand 375 states and 469 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:35,794 INFO L93 Difference]: Finished difference Result 704 states and 882 transitions. [2021-11-20 23:36:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:35,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-20 23:36:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:35,799 INFO L225 Difference]: With dead ends: 704 [2021-11-20 23:36:35,799 INFO L226 Difference]: Without dead ends: 648 [2021-11-20 23:36:35,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:36:35,801 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1856 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:35,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1856 Valid, 1322 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-20 23:36:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 375. [2021-11-20 23:36:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.3036211699164346) internal successors, (468), 374 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 468 transitions. [2021-11-20 23:36:35,879 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 468 transitions. Word has length 78 [2021-11-20 23:36:35,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:35,880 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 468 transitions. [2021-11-20 23:36:35,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:35,880 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 468 transitions. [2021-11-20 23:36:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:36:35,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:35,882 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] [2021-11-20 23:36:35,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:36:35,882 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1028792160, now seen corresponding path program 1 times [2021-11-20 23:36:35,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:35,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144120129] [2021-11-20 23:36:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:35,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:36,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:36,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144120129] [2021-11-20 23:36:36,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144120129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:36,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:36,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:36,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864926459] [2021-11-20 23:36:36,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:36,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:36,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:36,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:36,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:36,032 INFO L87 Difference]: Start difference. First operand 375 states and 468 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:37,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:37,053 INFO L93 Difference]: Finished difference Result 704 states and 880 transitions. [2021-11-20 23:36:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:37,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-20 23:36:37,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:37,058 INFO L225 Difference]: With dead ends: 704 [2021-11-20 23:36:37,058 INFO L226 Difference]: Without dead ends: 648 [2021-11-20 23:36:37,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:36:37,059 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1837 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:37,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 1350 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-20 23:36:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 375. [2021-11-20 23:36:37,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.3008356545961002) internal successors, (467), 374 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 467 transitions. [2021-11-20 23:36:37,109 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 467 transitions. Word has length 78 [2021-11-20 23:36:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:37,110 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 467 transitions. [2021-11-20 23:36:37,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 467 transitions. [2021-11-20 23:36:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:36:37,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:37,112 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] [2021-11-20 23:36:37,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:36:37,112 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:37,113 INFO L85 PathProgramCache]: Analyzing trace with hash -391975036, now seen corresponding path program 1 times [2021-11-20 23:36:37,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:37,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208430636] [2021-11-20 23:36:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:37,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:37,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:37,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208430636] [2021-11-20 23:36:37,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208430636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:37,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:37,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:37,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972630229] [2021-11-20 23:36:37,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:37,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:37,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:37,258 INFO L87 Difference]: Start difference. First operand 375 states and 467 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:38,223 INFO L93 Difference]: Finished difference Result 700 states and 875 transitions. [2021-11-20 23:36:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:38,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-20 23:36:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:38,227 INFO L225 Difference]: With dead ends: 700 [2021-11-20 23:36:38,227 INFO L226 Difference]: Without dead ends: 648 [2021-11-20 23:36:38,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:36:38,229 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 1852 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:38,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 1310 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-20 23:36:38,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 375. [2021-11-20 23:36:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.298050139275766) internal successors, (466), 374 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 466 transitions. [2021-11-20 23:36:38,276 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 466 transitions. Word has length 78 [2021-11-20 23:36:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:38,277 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 466 transitions. [2021-11-20 23:36:38,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 466 transitions. [2021-11-20 23:36:38,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:36:38,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:38,278 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] [2021-11-20 23:36:38,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:36:38,279 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:38,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1002682727, now seen corresponding path program 1 times [2021-11-20 23:36:38,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:38,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087708723] [2021-11-20 23:36:38,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:38,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:38,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:38,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087708723] [2021-11-20 23:36:38,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087708723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:38,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:38,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:36:38,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222598269] [2021-11-20 23:36:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:38,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:36:38,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:36:38,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:36:38,443 INFO L87 Difference]: Start difference. First operand 375 states and 466 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:39,903 INFO L93 Difference]: Finished difference Result 835 states and 1050 transitions. [2021-11-20 23:36:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 23:36:39,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-20 23:36:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:39,908 INFO L225 Difference]: With dead ends: 835 [2021-11-20 23:36:39,908 INFO L226 Difference]: Without dead ends: 712 [2021-11-20 23:36:39,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:36:39,910 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 1875 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:39,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1875 Valid, 2112 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:36:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-11-20 23:36:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 375. [2021-11-20 23:36:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2952646239554317) internal successors, (465), 374 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 465 transitions. [2021-11-20 23:36:39,974 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 465 transitions. Word has length 78 [2021-11-20 23:36:39,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:39,975 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 465 transitions. [2021-11-20 23:36:39,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 465 transitions. [2021-11-20 23:36:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:36:39,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:39,977 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] [2021-11-20 23:36:39,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:36:39,978 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:39,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 423246883, now seen corresponding path program 1 times [2021-11-20 23:36:39,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:39,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225276053] [2021-11-20 23:36:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:39,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:40,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:40,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225276053] [2021-11-20 23:36:40,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225276053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:40,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:40,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:40,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209135126] [2021-11-20 23:36:40,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:40,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:40,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:40,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:40,104 INFO L87 Difference]: Start difference. First operand 375 states and 465 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:40,944 INFO L93 Difference]: Finished difference Result 704 states and 876 transitions. [2021-11-20 23:36:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-20 23:36:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:40,949 INFO L225 Difference]: With dead ends: 704 [2021-11-20 23:36:40,949 INFO L226 Difference]: Without dead ends: 648 [2021-11-20 23:36:40,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:36:40,951 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1838 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:40,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 1324 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:36:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-20 23:36:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 375. [2021-11-20 23:36:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2924791086350975) internal successors, (464), 374 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 464 transitions. [2021-11-20 23:36:41,032 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 464 transitions. Word has length 78 [2021-11-20 23:36:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:41,033 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 464 transitions. [2021-11-20 23:36:41,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 464 transitions. [2021-11-20 23:36:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 23:36:41,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:41,035 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] [2021-11-20 23:36:41,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:36:41,035 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash 832092111, now seen corresponding path program 1 times [2021-11-20 23:36:41,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:41,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101507658] [2021-11-20 23:36:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:41,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:41,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:41,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101507658] [2021-11-20 23:36:41,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101507658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:41,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:41,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:41,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376798531] [2021-11-20 23:36:41,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:41,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:41,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:41,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:41,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:41,191 INFO L87 Difference]: Start difference. First operand 375 states and 464 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:42,181 INFO L93 Difference]: Finished difference Result 730 states and 913 transitions. [2021-11-20 23:36:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:42,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-20 23:36:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:42,187 INFO L225 Difference]: With dead ends: 730 [2021-11-20 23:36:42,187 INFO L226 Difference]: Without dead ends: 652 [2021-11-20 23:36:42,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:36:42,192 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 1677 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:42,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 1630 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-20 23:36:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 375. [2021-11-20 23:36:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2896935933147633) internal successors, (463), 374 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 463 transitions. [2021-11-20 23:36:42,245 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 463 transitions. Word has length 78 [2021-11-20 23:36:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:42,246 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 463 transitions. [2021-11-20 23:36:42,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 463 transitions. [2021-11-20 23:36:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:36:42,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:42,248 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] [2021-11-20 23:36:42,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:36:42,248 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:42,249 INFO L85 PathProgramCache]: Analyzing trace with hash -508022715, now seen corresponding path program 1 times [2021-11-20 23:36:42,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:42,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431277870] [2021-11-20 23:36:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:42,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:42,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:42,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431277870] [2021-11-20 23:36:42,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431277870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:42,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:42,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:42,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540733791] [2021-11-20 23:36:42,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:42,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:42,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:42,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:42,363 INFO L87 Difference]: Start difference. First operand 375 states and 463 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:43,198 INFO L93 Difference]: Finished difference Result 730 states and 914 transitions. [2021-11-20 23:36:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:43,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-20 23:36:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:43,205 INFO L225 Difference]: With dead ends: 730 [2021-11-20 23:36:43,206 INFO L226 Difference]: Without dead ends: 652 [2021-11-20 23:36:43,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:36:43,207 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 1157 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:43,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 1651 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:36:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-20 23:36:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 371. [2021-11-20 23:36:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.2901408450704226) internal successors, (458), 370 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 458 transitions. [2021-11-20 23:36:43,264 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 458 transitions. Word has length 79 [2021-11-20 23:36:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:43,265 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 458 transitions. [2021-11-20 23:36:43,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 458 transitions. [2021-11-20 23:36:43,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:43,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:43,267 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] [2021-11-20 23:36:43,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:36:43,268 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash 380495892, now seen corresponding path program 1 times [2021-11-20 23:36:43,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:43,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574780468] [2021-11-20 23:36:43,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:43,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:43,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:43,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574780468] [2021-11-20 23:36:43,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574780468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:43,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:43,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:43,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023163436] [2021-11-20 23:36:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:43,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:43,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:43,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:43,392 INFO L87 Difference]: Start difference. First operand 371 states and 458 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:44,303 INFO L93 Difference]: Finished difference Result 677 states and 833 transitions. [2021-11-20 23:36:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:36:44,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:44,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:44,308 INFO L225 Difference]: With dead ends: 677 [2021-11-20 23:36:44,309 INFO L226 Difference]: Without dead ends: 628 [2021-11-20 23:36:44,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:36:44,315 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1489 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:44,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1648 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:44,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-20 23:36:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 371. [2021-11-20 23:36:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.287323943661972) internal successors, (457), 370 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 457 transitions. [2021-11-20 23:36:44,374 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 457 transitions. Word has length 80 [2021-11-20 23:36:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:44,374 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 457 transitions. [2021-11-20 23:36:44,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 457 transitions. [2021-11-20 23:36:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:44,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:44,376 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] [2021-11-20 23:36:44,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:36:44,377 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:44,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2002274302, now seen corresponding path program 1 times [2021-11-20 23:36:44,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:44,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460340265] [2021-11-20 23:36:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:44,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:44,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:44,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460340265] [2021-11-20 23:36:44,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460340265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:44,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:44,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:44,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148002554] [2021-11-20 23:36:44,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:44,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:44,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:44,516 INFO L87 Difference]: Start difference. First operand 371 states and 457 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:45,579 INFO L93 Difference]: Finished difference Result 705 states and 872 transitions. [2021-11-20 23:36:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:45,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:45,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:45,584 INFO L225 Difference]: With dead ends: 705 [2021-11-20 23:36:45,584 INFO L226 Difference]: Without dead ends: 644 [2021-11-20 23:36:45,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:36:45,586 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1117 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:45,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 1544 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-11-20 23:36:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 371. [2021-11-20 23:36:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.2845070422535212) internal successors, (456), 370 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 456 transitions. [2021-11-20 23:36:45,645 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 456 transitions. Word has length 80 [2021-11-20 23:36:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:45,646 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 456 transitions. [2021-11-20 23:36:45,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 456 transitions. [2021-11-20 23:36:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:45,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:45,648 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] [2021-11-20 23:36:45,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 23:36:45,649 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash 891103228, now seen corresponding path program 1 times [2021-11-20 23:36:45,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:45,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150463261] [2021-11-20 23:36:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:45,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:45,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:45,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150463261] [2021-11-20 23:36:45,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150463261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:45,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:45,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:45,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874304863] [2021-11-20 23:36:45,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:45,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:45,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:45,774 INFO L87 Difference]: Start difference. First operand 371 states and 456 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:46,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:46,889 INFO L93 Difference]: Finished difference Result 674 states and 828 transitions. [2021-11-20 23:36:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:36:46,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:46,893 INFO L225 Difference]: With dead ends: 674 [2021-11-20 23:36:46,893 INFO L226 Difference]: Without dead ends: 628 [2021-11-20 23:36:46,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:36:46,894 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1490 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:46,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1750 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-20 23:36:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 371. [2021-11-20 23:36:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.2816901408450705) internal successors, (455), 370 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 455 transitions. [2021-11-20 23:36:46,958 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 455 transitions. Word has length 80 [2021-11-20 23:36:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:46,958 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 455 transitions. [2021-11-20 23:36:46,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 455 transitions. [2021-11-20 23:36:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:46,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:46,960 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] [2021-11-20 23:36:46,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 23:36:46,961 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash -374640683, now seen corresponding path program 1 times [2021-11-20 23:36:46,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:46,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872835090] [2021-11-20 23:36:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:46,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:47,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872835090] [2021-11-20 23:36:47,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872835090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:47,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:47,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:36:47,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796014351] [2021-11-20 23:36:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:47,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:36:47,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:47,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:36:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:47,164 INFO L87 Difference]: Start difference. First operand 371 states and 455 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:49,041 INFO L93 Difference]: Finished difference Result 909 states and 1131 transitions. [2021-11-20 23:36:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:36:49,041 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:49,045 INFO L225 Difference]: With dead ends: 909 [2021-11-20 23:36:49,045 INFO L226 Difference]: Without dead ends: 860 [2021-11-20 23:36:49,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:36:49,046 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 3014 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:49,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3014 Valid, 1529 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:36:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-20 23:36:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 375. [2021-11-20 23:36:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2785515320334262) internal successors, (459), 374 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:49,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 459 transitions. [2021-11-20 23:36:49,115 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 459 transitions. Word has length 80 [2021-11-20 23:36:49,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:49,115 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 459 transitions. [2021-11-20 23:36:49,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 459 transitions. [2021-11-20 23:36:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:49,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:49,117 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] [2021-11-20 23:36:49,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 23:36:49,118 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:49,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1845105563, now seen corresponding path program 1 times [2021-11-20 23:36:49,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:49,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739604431] [2021-11-20 23:36:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:49,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:49,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:49,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739604431] [2021-11-20 23:36:49,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739604431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:49,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:49,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:49,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227022137] [2021-11-20 23:36:49,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:49,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:49,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:49,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:49,244 INFO L87 Difference]: Start difference. First operand 375 states and 459 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:50,331 INFO L93 Difference]: Finished difference Result 674 states and 826 transitions. [2021-11-20 23:36:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:36:50,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:50,348 INFO L225 Difference]: With dead ends: 674 [2021-11-20 23:36:50,348 INFO L226 Difference]: Without dead ends: 628 [2021-11-20 23:36:50,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:36:50,350 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1483 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:50,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 1752 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-20 23:36:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 375. [2021-11-20 23:36:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.275766016713092) internal successors, (458), 374 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 458 transitions. [2021-11-20 23:36:50,427 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 458 transitions. Word has length 80 [2021-11-20 23:36:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:50,427 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 458 transitions. [2021-11-20 23:36:50,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 458 transitions. [2021-11-20 23:36:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:50,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:50,429 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] [2021-11-20 23:36:50,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 23:36:50,430 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1184234996, now seen corresponding path program 1 times [2021-11-20 23:36:50,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:50,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123215120] [2021-11-20 23:36:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:50,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:50,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123215120] [2021-11-20 23:36:50,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123215120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:50,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:50,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:36:50,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687100313] [2021-11-20 23:36:50,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:50,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:36:50,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:36:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:50,655 INFO L87 Difference]: Start difference. First operand 375 states and 458 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:52,471 INFO L93 Difference]: Finished difference Result 865 states and 1070 transitions. [2021-11-20 23:36:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:36:52,473 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:52,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:52,477 INFO L225 Difference]: With dead ends: 865 [2021-11-20 23:36:52,477 INFO L226 Difference]: Without dead ends: 860 [2021-11-20 23:36:52,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:36:52,479 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 2856 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:52,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 1565 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:36:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-20 23:36:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 379. [2021-11-20 23:36:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.2727272727272727) internal successors, (462), 378 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 462 transitions. [2021-11-20 23:36:52,545 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 462 transitions. Word has length 80 [2021-11-20 23:36:52,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:52,545 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 462 transitions. [2021-11-20 23:36:52,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:52,546 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 462 transitions. [2021-11-20 23:36:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:52,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:52,547 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] [2021-11-20 23:36:52,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 23:36:52,547 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:52,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1196411487, now seen corresponding path program 1 times [2021-11-20 23:36:52,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:52,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125447691] [2021-11-20 23:36:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:52,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:52,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:52,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125447691] [2021-11-20 23:36:52,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125447691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:52,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:52,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:36:52,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873900953] [2021-11-20 23:36:52,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:52,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:36:52,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:52,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:36:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:52,738 INFO L87 Difference]: Start difference. First operand 379 states and 462 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:54,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:54,565 INFO L93 Difference]: Finished difference Result 909 states and 1131 transitions. [2021-11-20 23:36:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:36:54,565 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:54,569 INFO L225 Difference]: With dead ends: 909 [2021-11-20 23:36:54,569 INFO L226 Difference]: Without dead ends: 863 [2021-11-20 23:36:54,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:36:54,570 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 3090 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:54,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3090 Valid, 1491 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:36:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-11-20 23:36:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 383. [2021-11-20 23:36:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 367 states have (on average 1.2697547683923707) internal successors, (466), 382 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 466 transitions. [2021-11-20 23:36:54,643 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 466 transitions. Word has length 80 [2021-11-20 23:36:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:54,644 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 466 transitions. [2021-11-20 23:36:54,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 466 transitions. [2021-11-20 23:36:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:54,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:54,646 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] [2021-11-20 23:36:54,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 23:36:54,646 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1992159898, now seen corresponding path program 1 times [2021-11-20 23:36:54,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:54,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609496640] [2021-11-20 23:36:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:54,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:54,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:54,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609496640] [2021-11-20 23:36:54,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609496640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:54,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:54,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:54,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623230680] [2021-11-20 23:36:54,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:54,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:54,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:54,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:54,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:54,761 INFO L87 Difference]: Start difference. First operand 383 states and 466 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:55,691 INFO L93 Difference]: Finished difference Result 672 states and 821 transitions. [2021-11-20 23:36:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:36:55,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:55,696 INFO L225 Difference]: With dead ends: 672 [2021-11-20 23:36:55,696 INFO L226 Difference]: Without dead ends: 628 [2021-11-20 23:36:55,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:36:55,697 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1482 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:55,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 1642 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:36:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-20 23:36:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 383. [2021-11-20 23:36:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 367 states have (on average 1.2670299727520435) internal successors, (465), 382 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 465 transitions. [2021-11-20 23:36:55,763 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 465 transitions. Word has length 80 [2021-11-20 23:36:55,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:55,764 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 465 transitions. [2021-11-20 23:36:55,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:55,764 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 465 transitions. [2021-11-20 23:36:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:55,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:55,766 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] [2021-11-20 23:36:55,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 23:36:55,766 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash -144938974, now seen corresponding path program 1 times [2021-11-20 23:36:55,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:55,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053371210] [2021-11-20 23:36:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:55,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:55,870 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:55,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053371210] [2021-11-20 23:36:55,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053371210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:55,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:55,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:55,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048089900] [2021-11-20 23:36:55,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:55,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:55,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:55,873 INFO L87 Difference]: Start difference. First operand 383 states and 465 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:56,671 INFO L93 Difference]: Finished difference Result 721 states and 882 transitions. [2021-11-20 23:36:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:56,675 INFO L225 Difference]: With dead ends: 721 [2021-11-20 23:36:56,676 INFO L226 Difference]: Without dead ends: 660 [2021-11-20 23:36:56,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:36:56,677 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1760 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:56,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 1491 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:36:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-20 23:36:56,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 383. [2021-11-20 23:36:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 367 states have (on average 1.2643051771117166) internal successors, (464), 382 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 464 transitions. [2021-11-20 23:36:56,739 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 464 transitions. Word has length 80 [2021-11-20 23:36:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:56,740 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 464 transitions. [2021-11-20 23:36:56,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 464 transitions. [2021-11-20 23:36:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:56,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:56,741 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] [2021-11-20 23:36:56,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 23:36:56,742 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:56,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2057136076, now seen corresponding path program 1 times [2021-11-20 23:36:56,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:56,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841160136] [2021-11-20 23:36:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:56,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:56,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:56,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841160136] [2021-11-20 23:36:56,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841160136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:56,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:56,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:56,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294724188] [2021-11-20 23:36:56,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:56,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:56,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:56,856 INFO L87 Difference]: Start difference. First operand 383 states and 464 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:57,812 INFO L93 Difference]: Finished difference Result 677 states and 824 transitions. [2021-11-20 23:36:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:36:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:36:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:57,815 INFO L225 Difference]: With dead ends: 677 [2021-11-20 23:36:57,815 INFO L226 Difference]: Without dead ends: 628 [2021-11-20 23:36:57,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:36:57,816 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1467 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:57,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 1722 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:36:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-20 23:36:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 383. [2021-11-20 23:36:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 367 states have (on average 1.2615803814713897) internal successors, (463), 382 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 463 transitions. [2021-11-20 23:36:57,904 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 463 transitions. Word has length 80 [2021-11-20 23:36:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:57,904 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 463 transitions. [2021-11-20 23:36:57,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 463 transitions. [2021-11-20 23:36:57,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:36:57,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:57,906 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] [2021-11-20 23:36:57,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 23:36:57,907 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:36:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2041843904, now seen corresponding path program 1 times [2021-11-20 23:36:57,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:57,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118247084] [2021-11-20 23:36:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:57,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:58,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118247084] [2021-11-20 23:36:58,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118247084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:58,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:58,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:36:58,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604100448] [2021-11-20 23:36:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:58,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:36:58,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:58,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:36:58,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:58,107 INFO L87 Difference]: Start difference. First operand 383 states and 463 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:00,396 INFO L93 Difference]: Finished difference Result 1067 states and 1329 transitions. [2021-11-20 23:37:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:37:00,397 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:37:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:00,400 INFO L225 Difference]: With dead ends: 1067 [2021-11-20 23:37:00,400 INFO L226 Difference]: Without dead ends: 983 [2021-11-20 23:37:00,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:00,402 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 3147 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:00,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3147 Valid, 2445 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:37:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2021-11-20 23:37:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 387. [2021-11-20 23:37:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.2587601078167117) internal successors, (467), 386 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 467 transitions. [2021-11-20 23:37:00,469 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 467 transitions. Word has length 80 [2021-11-20 23:37:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:00,469 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 467 transitions. [2021-11-20 23:37:00,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 467 transitions. [2021-11-20 23:37:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:37:00,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:00,471 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] [2021-11-20 23:37:00,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 23:37:00,471 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1484508438, now seen corresponding path program 1 times [2021-11-20 23:37:00,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:00,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612045818] [2021-11-20 23:37:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:00,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:00,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:00,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612045818] [2021-11-20 23:37:00,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612045818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:00,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:00,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:00,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566299834] [2021-11-20 23:37:00,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:00,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:00,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:00,600 INFO L87 Difference]: Start difference. First operand 387 states and 467 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:01,520 INFO L93 Difference]: Finished difference Result 637 states and 769 transitions. [2021-11-20 23:37:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:01,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:37:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:01,523 INFO L225 Difference]: With dead ends: 637 [2021-11-20 23:37:01,523 INFO L226 Difference]: Without dead ends: 632 [2021-11-20 23:37:01,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:01,524 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1463 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:01,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 1723 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-20 23:37:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 387. [2021-11-20 23:37:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.256064690026954) internal successors, (466), 386 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 466 transitions. [2021-11-20 23:37:01,591 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 466 transitions. Word has length 80 [2021-11-20 23:37:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:01,591 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 466 transitions. [2021-11-20 23:37:01,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 466 transitions. [2021-11-20 23:37:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:37:01,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:01,593 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] [2021-11-20 23:37:01,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 23:37:01,594 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:01,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:01,594 INFO L85 PathProgramCache]: Analyzing trace with hash -898261756, now seen corresponding path program 1 times [2021-11-20 23:37:01,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:01,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318435341] [2021-11-20 23:37:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:01,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:01,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:01,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318435341] [2021-11-20 23:37:01,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318435341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:01,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:01,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:01,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184648258] [2021-11-20 23:37:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:01,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:01,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:01,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:01,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:01,697 INFO L87 Difference]: Start difference. First operand 387 states and 466 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:02,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:02,711 INFO L93 Difference]: Finished difference Result 681 states and 824 transitions. [2021-11-20 23:37:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:02,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:37:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:02,714 INFO L225 Difference]: With dead ends: 681 [2021-11-20 23:37:02,714 INFO L226 Difference]: Without dead ends: 664 [2021-11-20 23:37:02,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:02,716 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 1591 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:02,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 1580 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-20 23:37:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 387. [2021-11-20 23:37:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.2533692722371967) internal successors, (465), 386 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 465 transitions. [2021-11-20 23:37:02,777 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 465 transitions. Word has length 80 [2021-11-20 23:37:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:02,777 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 465 transitions. [2021-11-20 23:37:02,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 465 transitions. [2021-11-20 23:37:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:37:02,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:02,778 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] [2021-11-20 23:37:02,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 23:37:02,779 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1995378919, now seen corresponding path program 1 times [2021-11-20 23:37:02,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:02,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831923046] [2021-11-20 23:37:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:02,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:02,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:02,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831923046] [2021-11-20 23:37:02,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831923046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:02,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:02,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:02,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120244643] [2021-11-20 23:37:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:02,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:02,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:02,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:02,889 INFO L87 Difference]: Start difference. First operand 387 states and 465 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:03,880 INFO L93 Difference]: Finished difference Result 678 states and 822 transitions. [2021-11-20 23:37:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:03,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:37:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:03,883 INFO L225 Difference]: With dead ends: 678 [2021-11-20 23:37:03,883 INFO L226 Difference]: Without dead ends: 632 [2021-11-20 23:37:03,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:37:03,885 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1462 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:03,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 1754 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:03,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-20 23:37:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 387. [2021-11-20 23:37:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.2506738544474394) internal successors, (464), 386 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 464 transitions. [2021-11-20 23:37:03,943 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 464 transitions. Word has length 80 [2021-11-20 23:37:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:03,943 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 464 transitions. [2021-11-20 23:37:03,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 464 transitions. [2021-11-20 23:37:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:37:03,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:03,945 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] [2021-11-20 23:37:03,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 23:37:03,945 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:03,946 INFO L85 PathProgramCache]: Analyzing trace with hash 729371863, now seen corresponding path program 1 times [2021-11-20 23:37:03,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:03,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388471947] [2021-11-20 23:37:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:03,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:04,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:04,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388471947] [2021-11-20 23:37:04,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388471947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:04,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:04,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:37:04,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954322935] [2021-11-20 23:37:04,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:04,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:04,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:04,134 INFO L87 Difference]: Start difference. First operand 387 states and 464 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:05,875 INFO L93 Difference]: Finished difference Result 869 states and 1066 transitions. [2021-11-20 23:37:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 23:37:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-20 23:37:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:05,879 INFO L225 Difference]: With dead ends: 869 [2021-11-20 23:37:05,880 INFO L226 Difference]: Without dead ends: 864 [2021-11-20 23:37:05,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:05,881 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 2929 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:05,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2929 Valid, 1587 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:37:05,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-20 23:37:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 391. [2021-11-20 23:37:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 375 states have (on average 1.248) internal successors, (468), 390 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 468 transitions. [2021-11-20 23:37:05,945 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 468 transitions. Word has length 80 [2021-11-20 23:37:05,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:05,946 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 468 transitions. [2021-11-20 23:37:05,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 468 transitions. [2021-11-20 23:37:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:05,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:05,947 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] [2021-11-20 23:37:05,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 23:37:05,948 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1004873075, now seen corresponding path program 1 times [2021-11-20 23:37:05,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:05,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132467873] [2021-11-20 23:37:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:05,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:06,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:06,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132467873] [2021-11-20 23:37:06,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132467873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:06,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:06,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:06,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684905759] [2021-11-20 23:37:06,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:06,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:06,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:06,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:06,059 INFO L87 Difference]: Start difference. First operand 391 states and 468 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:07,077 INFO L93 Difference]: Finished difference Result 681 states and 823 transitions. [2021-11-20 23:37:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:07,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-20 23:37:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:07,080 INFO L225 Difference]: With dead ends: 681 [2021-11-20 23:37:07,080 INFO L226 Difference]: Without dead ends: 632 [2021-11-20 23:37:07,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:07,081 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1092 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:07,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 1479 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-20 23:37:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 387. [2021-11-20 23:37:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.247978436657682) internal successors, (463), 386 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 463 transitions. [2021-11-20 23:37:07,146 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 463 transitions. Word has length 81 [2021-11-20 23:37:07,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:07,146 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 463 transitions. [2021-11-20 23:37:07,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 463 transitions. [2021-11-20 23:37:07,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:07,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:07,148 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] [2021-11-20 23:37:07,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 23:37:07,149 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:07,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:07,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2085378986, now seen corresponding path program 1 times [2021-11-20 23:37:07,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:07,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358249174] [2021-11-20 23:37:07,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:07,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:07,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:07,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358249174] [2021-11-20 23:37:07,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358249174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:07,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:07,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:07,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872170082] [2021-11-20 23:37:07,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:07,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:07,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:07,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:07,266 INFO L87 Difference]: Start difference. First operand 387 states and 463 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:08,159 INFO L93 Difference]: Finished difference Result 637 states and 764 transitions. [2021-11-20 23:37:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:08,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-20 23:37:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:08,162 INFO L225 Difference]: With dead ends: 637 [2021-11-20 23:37:08,162 INFO L226 Difference]: Without dead ends: 632 [2021-11-20 23:37:08,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:08,163 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1557 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:08,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 1497 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-20 23:37:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 383. [2021-11-20 23:37:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 367 states have (on average 1.2479564032697548) internal successors, (458), 382 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:08,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 458 transitions. [2021-11-20 23:37:08,248 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 458 transitions. Word has length 81 [2021-11-20 23:37:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:08,248 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 458 transitions. [2021-11-20 23:37:08,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 458 transitions. [2021-11-20 23:37:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:08,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:08,250 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] [2021-11-20 23:37:08,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 23:37:08,251 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1507957345, now seen corresponding path program 1 times [2021-11-20 23:37:08,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:08,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058381859] [2021-11-20 23:37:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:08,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:08,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:08,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058381859] [2021-11-20 23:37:08,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058381859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:08,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:08,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:08,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190452620] [2021-11-20 23:37:08,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:08,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:08,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:08,358 INFO L87 Difference]: Start difference. First operand 383 states and 458 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:09,333 INFO L93 Difference]: Finished difference Result 678 states and 818 transitions. [2021-11-20 23:37:09,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:09,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-20 23:37:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:09,336 INFO L225 Difference]: With dead ends: 678 [2021-11-20 23:37:09,336 INFO L226 Difference]: Without dead ends: 632 [2021-11-20 23:37:09,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:09,337 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 1566 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:09,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1566 Valid, 1499 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:09,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-20 23:37:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 379. [2021-11-20 23:37:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.2479338842975207) internal successors, (453), 378 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 453 transitions. [2021-11-20 23:37:09,424 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 453 transitions. Word has length 81 [2021-11-20 23:37:09,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:09,424 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 453 transitions. [2021-11-20 23:37:09,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 453 transitions. [2021-11-20 23:37:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:09,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:09,425 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] [2021-11-20 23:37:09,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-20 23:37:09,426 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:09,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1069510264, now seen corresponding path program 1 times [2021-11-20 23:37:09,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:09,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364961161] [2021-11-20 23:37:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:09,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:09,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:09,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364961161] [2021-11-20 23:37:09,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364961161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:09,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:09,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:09,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828474410] [2021-11-20 23:37:09,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:09,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:09,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:09,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:09,532 INFO L87 Difference]: Start difference. First operand 379 states and 453 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:10,697 INFO L93 Difference]: Finished difference Result 740 states and 902 transitions. [2021-11-20 23:37:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:10,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-20 23:37:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:10,701 INFO L225 Difference]: With dead ends: 740 [2021-11-20 23:37:10,702 INFO L226 Difference]: Without dead ends: 656 [2021-11-20 23:37:10,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:10,703 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 1496 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:10,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 1733 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:37:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-20 23:37:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 375. [2021-11-20 23:37:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2479108635097493) internal successors, (448), 374 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:10,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 448 transitions. [2021-11-20 23:37:10,788 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 448 transitions. Word has length 81 [2021-11-20 23:37:10,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:10,788 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 448 transitions. [2021-11-20 23:37:10,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:10,789 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 448 transitions. [2021-11-20 23:37:10,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 23:37:10,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:10,790 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] [2021-11-20 23:37:10,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-20 23:37:10,790 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:10,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash 869523368, now seen corresponding path program 1 times [2021-11-20 23:37:10,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:10,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566050985] [2021-11-20 23:37:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:10,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:10,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:10,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566050985] [2021-11-20 23:37:10,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566050985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:10,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:10,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:10,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421411460] [2021-11-20 23:37:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:10,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:10,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:10,904 INFO L87 Difference]: Start difference. First operand 375 states and 448 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:11,842 INFO L93 Difference]: Finished difference Result 633 states and 757 transitions. [2021-11-20 23:37:11,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:37:11,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-20 23:37:11,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:11,846 INFO L225 Difference]: With dead ends: 633 [2021-11-20 23:37:11,846 INFO L226 Difference]: Without dead ends: 628 [2021-11-20 23:37:11,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:37:11,847 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 1468 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:11,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 1567 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:37:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-20 23:37:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 371. [2021-11-20 23:37:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 355 states have (on average 1.2478873239436619) internal successors, (443), 370 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 443 transitions. [2021-11-20 23:37:11,934 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 443 transitions. Word has length 81 [2021-11-20 23:37:11,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:11,935 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 443 transitions. [2021-11-20 23:37:11,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:11,935 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 443 transitions. [2021-11-20 23:37:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 23:37:11,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:11,936 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] [2021-11-20 23:37:11,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-20 23:37:11,936 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1274155887, now seen corresponding path program 1 times [2021-11-20 23:37:11,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:11,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510058370] [2021-11-20 23:37:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:11,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:13,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:13,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510058370] [2021-11-20 23:37:13,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510058370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:13,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:13,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-20 23:37:13,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327307688] [2021-11-20 23:37:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:13,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-20 23:37:13,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:13,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-20 23:37:13,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2021-11-20 23:37:13,282 INFO L87 Difference]: Start difference. First operand 371 states and 443 transitions. Second operand has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:20,076 INFO L93 Difference]: Finished difference Result 1312 states and 1550 transitions. [2021-11-20 23:37:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:37:20,076 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-20 23:37:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:20,082 INFO L225 Difference]: With dead ends: 1312 [2021-11-20 23:37:20,082 INFO L226 Difference]: Without dead ends: 1264 [2021-11-20 23:37:20,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=461, Invalid=2191, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 23:37:20,083 INFO L933 BasicCegarLoop]: 1037 mSDtfsCounter, 3891 mSDsluCounter, 14910 mSDsCounter, 0 mSdLazyCounter, 8572 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3891 SdHoareTripleChecker+Valid, 15856 SdHoareTripleChecker+Invalid, 8769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 8572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:20,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3891 Valid, 15856 Invalid, 8769 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 8572 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 23:37:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-11-20 23:37:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 387. [2021-11-20 23:37:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 371 states have (on average 1.247978436657682) internal successors, (463), 386 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 463 transitions. [2021-11-20 23:37:20,177 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 463 transitions. Word has length 82 [2021-11-20 23:37:20,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:20,177 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 463 transitions. [2021-11-20 23:37:20,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:20,178 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 463 transitions. [2021-11-20 23:37:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 23:37:20,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:20,179 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] [2021-11-20 23:37:20,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-20 23:37:20,179 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1240294261, now seen corresponding path program 1 times [2021-11-20 23:37:20,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:20,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200672680] [2021-11-20 23:37:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:20,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:20,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:20,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200672680] [2021-11-20 23:37:20,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200672680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:20,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:20,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:37:20,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509937486] [2021-11-20 23:37:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:20,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:20,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:20,493 INFO L87 Difference]: Start difference. First operand 387 states and 463 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:21,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:21,756 INFO L93 Difference]: Finished difference Result 904 states and 1076 transitions. [2021-11-20 23:37:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:37:21,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-20 23:37:21,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:21,759 INFO L225 Difference]: With dead ends: 904 [2021-11-20 23:37:21,759 INFO L226 Difference]: Without dead ends: 726 [2021-11-20 23:37:21,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:37:21,760 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 2165 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:21,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2165 Valid, 2049 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:37:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-20 23:37:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 253. [2021-11-20 23:37:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 242 states have (on average 1.21900826446281) internal successors, (295), 252 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 295 transitions. [2021-11-20 23:37:21,818 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 295 transitions. Word has length 82 [2021-11-20 23:37:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:21,819 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 295 transitions. [2021-11-20 23:37:21,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 295 transitions. [2021-11-20 23:37:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 23:37:21,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:21,819 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] [2021-11-20 23:37:21,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-20 23:37:21,820 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1213653297, now seen corresponding path program 1 times [2021-11-20 23:37:21,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:21,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149686937] [2021-11-20 23:37:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:21,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:22,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:22,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149686937] [2021-11-20 23:37:22,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149686937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:22,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:22,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:22,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784609481] [2021-11-20 23:37:22,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:22,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:37:22,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:22,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:37:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:22,175 INFO L87 Difference]: Start difference. First operand 253 states and 295 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:23,262 INFO L93 Difference]: Finished difference Result 646 states and 789 transitions. [2021-11-20 23:37:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:23,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-20 23:37:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:23,264 INFO L225 Difference]: With dead ends: 646 [2021-11-20 23:37:23,264 INFO L226 Difference]: Without dead ends: 569 [2021-11-20 23:37:23,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:37:23,265 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1576 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:23,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 2568 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:37:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-11-20 23:37:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 220. [2021-11-20 23:37:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 212 states have (on average 1.2028301886792452) internal successors, (255), 219 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 255 transitions. [2021-11-20 23:37:23,343 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 255 transitions. Word has length 82 [2021-11-20 23:37:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:23,344 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 255 transitions. [2021-11-20 23:37:23,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 255 transitions. [2021-11-20 23:37:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 23:37:23,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:23,344 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] [2021-11-20 23:37:23,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-20 23:37:23,345 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash -910264626, now seen corresponding path program 1 times [2021-11-20 23:37:23,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:23,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413072186] [2021-11-20 23:37:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:23,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:23,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:23,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413072186] [2021-11-20 23:37:23,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413072186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:23,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:23,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:23,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011894153] [2021-11-20 23:37:23,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:23,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:37:23,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:37:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:23,673 INFO L87 Difference]: Start difference. First operand 220 states and 255 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:24,683 INFO L93 Difference]: Finished difference Result 366 states and 430 transitions. [2021-11-20 23:37:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:37:24,684 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-20 23:37:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:24,686 INFO L225 Difference]: With dead ends: 366 [2021-11-20 23:37:24,686 INFO L226 Difference]: Without dead ends: 318 [2021-11-20 23:37:24,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:37:24,686 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1121 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:24,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 1341 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:37:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-20 23:37:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 216. [2021-11-20 23:37:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.1961722488038278) internal successors, (250), 215 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 250 transitions. [2021-11-20 23:37:24,752 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 250 transitions. Word has length 82 [2021-11-20 23:37:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:24,752 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 250 transitions. [2021-11-20 23:37:24,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 250 transitions. [2021-11-20 23:37:24,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 23:37:24,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:24,753 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] [2021-11-20 23:37:24,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-20 23:37:24,753 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:24,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1175029773, now seen corresponding path program 1 times [2021-11-20 23:37:24,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:24,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874741761] [2021-11-20 23:37:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:24,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:25,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:25,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874741761] [2021-11-20 23:37:25,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874741761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:25,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:25,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:37:25,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169034790] [2021-11-20 23:37:25,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:25,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:37:25,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:37:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:37:25,401 INFO L87 Difference]: Start difference. First operand 216 states and 250 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:27,327 INFO L93 Difference]: Finished difference Result 626 states and 756 transitions. [2021-11-20 23:37:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:37:27,327 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-20 23:37:27,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:27,330 INFO L225 Difference]: With dead ends: 626 [2021-11-20 23:37:27,330 INFO L226 Difference]: Without dead ends: 523 [2021-11-20 23:37:27,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:37:27,332 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 1699 mSDsluCounter, 5130 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 5447 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:27,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 5447 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:37:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-20 23:37:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 226. [2021-11-20 23:37:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.1963470319634704) internal successors, (262), 225 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 262 transitions. [2021-11-20 23:37:27,402 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 262 transitions. Word has length 82 [2021-11-20 23:37:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:27,402 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 262 transitions. [2021-11-20 23:37:27,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 262 transitions. [2021-11-20 23:37:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 23:37:27,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:27,403 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] [2021-11-20 23:37:27,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-20 23:37:27,403 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash -618515849, now seen corresponding path program 1 times [2021-11-20 23:37:27,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398441330] [2021-11-20 23:37:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:27,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:27,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:27,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398441330] [2021-11-20 23:37:27,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398441330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:27,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:27,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:27,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103163446] [2021-11-20 23:37:27,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:27,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:37:27,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:27,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:37:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:27,654 INFO L87 Difference]: Start difference. First operand 226 states and 262 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:28,435 INFO L93 Difference]: Finished difference Result 531 states and 640 transitions. [2021-11-20 23:37:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:28,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-20 23:37:28,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:28,437 INFO L225 Difference]: With dead ends: 531 [2021-11-20 23:37:28,437 INFO L226 Difference]: Without dead ends: 420 [2021-11-20 23:37:28,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-11-20 23:37:28,439 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 1017 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:28,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 1777 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:37:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-20 23:37:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 153. [2021-11-20 23:37:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 150 states have (on average 1.1666666666666667) internal successors, (175), 152 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 175 transitions. [2021-11-20 23:37:28,494 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 175 transitions. Word has length 83 [2021-11-20 23:37:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:28,494 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 175 transitions. [2021-11-20 23:37:28,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 175 transitions. [2021-11-20 23:37:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 23:37:28,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:28,495 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] [2021-11-20 23:37:28,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-20 23:37:28,496 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:28,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1732888836, now seen corresponding path program 1 times [2021-11-20 23:37:28,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:28,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030274531] [2021-11-20 23:37:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:28,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:28,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030274531] [2021-11-20 23:37:28,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030274531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:28,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:28,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:28,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84779145] [2021-11-20 23:37:28,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:28,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:28,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:28,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:28,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:28,603 INFO L87 Difference]: Start difference. First operand 153 states and 175 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:29,019 INFO L93 Difference]: Finished difference Result 225 states and 261 transitions. [2021-11-20 23:37:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:37:29,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-20 23:37:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:29,021 INFO L225 Difference]: With dead ends: 225 [2021-11-20 23:37:29,021 INFO L226 Difference]: Without dead ends: 218 [2021-11-20 23:37:29,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:37:29,022 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 516 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:29,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 556 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:37:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-20 23:37:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 153. [2021-11-20 23:37:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 150 states have (on average 1.16) internal successors, (174), 152 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2021-11-20 23:37:29,088 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 83 [2021-11-20 23:37:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:29,089 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2021-11-20 23:37:29,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2021-11-20 23:37:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 23:37:29,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:29,090 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] [2021-11-20 23:37:29,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-20 23:37:29,090 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:29,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:29,091 INFO L85 PathProgramCache]: Analyzing trace with hash 956701402, now seen corresponding path program 1 times [2021-11-20 23:37:29,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:29,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663359978] [2021-11-20 23:37:29,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:29,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:29,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:29,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663359978] [2021-11-20 23:37:29,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663359978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:29,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:29,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:29,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167529195] [2021-11-20 23:37:29,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:29,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:37:29,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:29,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:37:29,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:37:29,181 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:29,596 INFO L93 Difference]: Finished difference Result 298 states and 352 transitions. [2021-11-20 23:37:29,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:37:29,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-20 23:37:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:29,598 INFO L225 Difference]: With dead ends: 298 [2021-11-20 23:37:29,598 INFO L226 Difference]: Without dead ends: 236 [2021-11-20 23:37:29,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:37:29,600 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 607 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:29,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 510 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:37:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-20 23:37:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 153. [2021-11-20 23:37:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 150 states have (on average 1.1533333333333333) internal successors, (173), 152 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 173 transitions. [2021-11-20 23:37:29,665 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 173 transitions. Word has length 83 [2021-11-20 23:37:29,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:29,665 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 173 transitions. [2021-11-20 23:37:29,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 173 transitions. [2021-11-20 23:37:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 23:37:29,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:29,666 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] [2021-11-20 23:37:29,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-20 23:37:29,666 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:29,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:29,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1737767892, now seen corresponding path program 1 times [2021-11-20 23:37:29,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:29,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485335957] [2021-11-20 23:37:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:29,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:30,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:30,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485335957] [2021-11-20 23:37:30,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485335957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:30,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:30,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-20 23:37:30,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639911687] [2021-11-20 23:37:30,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:30,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 23:37:30,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:30,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 23:37:30,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:37:30,578 INFO L87 Difference]: Start difference. First operand 153 states and 173 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:34,234 INFO L93 Difference]: Finished difference Result 577 states and 680 transitions. [2021-11-20 23:37:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 23:37:34,234 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-20 23:37:34,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:34,235 INFO L225 Difference]: With dead ends: 577 [2021-11-20 23:37:34,236 INFO L226 Difference]: Without dead ends: 569 [2021-11-20 23:37:34,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=337, Invalid=1825, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 23:37:34,237 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 1299 mSDsluCounter, 6665 mSDsCounter, 0 mSdLazyCounter, 3224 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 6994 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:34,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 6994 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3224 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:37:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-11-20 23:37:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 172. [2021-11-20 23:37:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 169 states have (on average 1.1597633136094674) internal successors, (196), 171 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 196 transitions. [2021-11-20 23:37:34,299 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 196 transitions. Word has length 85 [2021-11-20 23:37:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:34,300 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 196 transitions. [2021-11-20 23:37:34,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 196 transitions. [2021-11-20 23:37:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 23:37:34,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:34,301 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] [2021-11-20 23:37:34,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-20 23:37:34,301 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:34,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2073632219, now seen corresponding path program 1 times [2021-11-20 23:37:34,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:34,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898460204] [2021-11-20 23:37:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:34,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:35,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:35,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898460204] [2021-11-20 23:37:35,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898460204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:35,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:35,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-20 23:37:35,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108191463] [2021-11-20 23:37:35,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:35,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 23:37:35,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 23:37:35,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-11-20 23:37:35,249 INFO L87 Difference]: Start difference. First operand 172 states and 196 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:38,813 INFO L93 Difference]: Finished difference Result 671 states and 803 transitions. [2021-11-20 23:37:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 23:37:38,814 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-20 23:37:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:38,814 INFO L225 Difference]: With dead ends: 671 [2021-11-20 23:37:38,815 INFO L226 Difference]: Without dead ends: 665 [2021-11-20 23:37:38,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=396, Invalid=2054, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 23:37:38,816 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 1528 mSDsluCounter, 6887 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 7229 SdHoareTripleChecker+Invalid, 3409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:38,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 7229 Invalid, 3409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:37:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-11-20 23:37:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 178. [2021-11-20 23:37:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 175 states have (on average 1.1657142857142857) internal successors, (204), 177 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:38,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 204 transitions. [2021-11-20 23:37:38,885 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 204 transitions. Word has length 85 [2021-11-20 23:37:38,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:38,886 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 204 transitions. [2021-11-20 23:37:38,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 204 transitions. [2021-11-20 23:37:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-20 23:37:38,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:38,886 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] [2021-11-20 23:37:38,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-20 23:37:38,887 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1205220568, now seen corresponding path program 1 times [2021-11-20 23:37:38,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:38,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103175641] [2021-11-20 23:37:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:38,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:39,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:39,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103175641] [2021-11-20 23:37:39,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103175641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:39,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:39,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:37:39,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624304600] [2021-11-20 23:37:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:39,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:39,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:39,236 INFO L87 Difference]: Start difference. First operand 178 states and 204 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:40,460 INFO L93 Difference]: Finished difference Result 461 states and 560 transitions. [2021-11-20 23:37:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 23:37:40,461 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-20 23:37:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:40,462 INFO L225 Difference]: With dead ends: 461 [2021-11-20 23:37:40,462 INFO L226 Difference]: Without dead ends: 446 [2021-11-20 23:37:40,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:37:40,463 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1028 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:40,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 2219 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:37:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-20 23:37:40,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 162. [2021-11-20 23:37:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.1625) internal successors, (186), 161 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 186 transitions. [2021-11-20 23:37:40,534 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 186 transitions. Word has length 86 [2021-11-20 23:37:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:40,534 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 186 transitions. [2021-11-20 23:37:40,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 186 transitions. [2021-11-20 23:37:40,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-20 23:37:40,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:40,535 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] [2021-11-20 23:37:40,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-20 23:37:40,536 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:40,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1688787753, now seen corresponding path program 1 times [2021-11-20 23:37:40,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:40,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992483692] [2021-11-20 23:37:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:40,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:41,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992483692] [2021-11-20 23:37:41,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992483692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:41,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:41,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:37:41,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598827894] [2021-11-20 23:37:41,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:41,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:37:41,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:41,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:37:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:37:41,067 INFO L87 Difference]: Start difference. First operand 162 states and 186 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:44,938 INFO L93 Difference]: Finished difference Result 881 states and 1096 transitions. [2021-11-20 23:37:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:37:44,939 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-20 23:37:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:44,940 INFO L225 Difference]: With dead ends: 881 [2021-11-20 23:37:44,940 INFO L226 Difference]: Without dead ends: 875 [2021-11-20 23:37:44,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=417, Invalid=1475, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 23:37:44,942 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1293 mSDsluCounter, 5405 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 5783 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:44,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 5783 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:37:44,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-20 23:37:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 175. [2021-11-20 23:37:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.1618497109826589) internal successors, (201), 174 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2021-11-20 23:37:45,033 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 86 [2021-11-20 23:37:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:45,033 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2021-11-20 23:37:45,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2021-11-20 23:37:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-20 23:37:45,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:45,034 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] [2021-11-20 23:37:45,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-20 23:37:45,034 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:45,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash -612658842, now seen corresponding path program 1 times [2021-11-20 23:37:45,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:45,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266556959] [2021-11-20 23:37:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:45,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:45,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:45,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266556959] [2021-11-20 23:37:45,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266556959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:45,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:45,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:45,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10245718] [2021-11-20 23:37:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:45,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:37:45,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:37:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:45,402 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:46,449 INFO L93 Difference]: Finished difference Result 340 states and 410 transitions. [2021-11-20 23:37:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:37:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-20 23:37:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:46,451 INFO L225 Difference]: With dead ends: 340 [2021-11-20 23:37:46,451 INFO L226 Difference]: Without dead ends: 334 [2021-11-20 23:37:46,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:37:46,452 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 794 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:46,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1594 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:37:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-20 23:37:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 135. [2021-11-20 23:37:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 134 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2021-11-20 23:37:46,568 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 86 [2021-11-20 23:37:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:46,569 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2021-11-20 23:37:46,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2021-11-20 23:37:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 23:37:46,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:46,570 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] [2021-11-20 23:37:46,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-20 23:37:46,571 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:46,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:46,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1279914286, now seen corresponding path program 1 times [2021-11-20 23:37:46,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935493441] [2021-11-20 23:37:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:46,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:46,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935493441] [2021-11-20 23:37:46,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935493441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:46,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:46,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:46,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333548291] [2021-11-20 23:37:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:46,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:46,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:46,631 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:46,852 INFO L93 Difference]: Finished difference Result 223 states and 268 transitions. [2021-11-20 23:37:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-20 23:37:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:46,853 INFO L225 Difference]: With dead ends: 223 [2021-11-20 23:37:46,853 INFO L226 Difference]: Without dead ends: 179 [2021-11-20 23:37:46,854 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 [2021-11-20 23:37:46,854 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 64 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:46,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 294 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-20 23:37:46,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2021-11-20 23:37:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.186046511627907) internal successors, (204), 172 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2021-11-20 23:37:46,978 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 103 [2021-11-20 23:37:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:46,978 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2021-11-20 23:37:46,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2021-11-20 23:37:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-20 23:37:46,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:46,979 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] [2021-11-20 23:37:46,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-20 23:37:46,979 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1764263082, now seen corresponding path program 1 times [2021-11-20 23:37:46,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:46,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49381402] [2021-11-20 23:37:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:46,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:47,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:47,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49381402] [2021-11-20 23:37:47,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49381402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:47,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:47,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:47,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076111938] [2021-11-20 23:37:47,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:47,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:47,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:47,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:47,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:47,038 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:47,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:47,370 INFO L93 Difference]: Finished difference Result 337 states and 418 transitions. [2021-11-20 23:37:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:47,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-20 23:37:47,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:47,372 INFO L225 Difference]: With dead ends: 337 [2021-11-20 23:37:47,372 INFO L226 Difference]: Without dead ends: 255 [2021-11-20 23:37:47,372 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 [2021-11-20 23:37:47,373 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 57 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:47,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 294 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-20 23:37:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2021-11-20 23:37:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.221311475409836) internal successors, (298), 244 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 298 transitions. [2021-11-20 23:37:47,611 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 298 transitions. Word has length 106 [2021-11-20 23:37:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:47,611 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 298 transitions. [2021-11-20 23:37:47,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 298 transitions. [2021-11-20 23:37:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-20 23:37:47,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:47,612 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] [2021-11-20 23:37:47,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-20 23:37:47,613 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1482616109, now seen corresponding path program 1 times [2021-11-20 23:37:47,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:47,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563909658] [2021-11-20 23:37:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:47,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:47,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:47,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563909658] [2021-11-20 23:37:47,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563909658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:47,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:47,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:47,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559156003] [2021-11-20 23:37:47,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:47,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:47,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:47,671 INFO L87 Difference]: Start difference. First operand 245 states and 298 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:48,152 INFO L93 Difference]: Finished difference Result 553 states and 700 transitions. [2021-11-20 23:37:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-20 23:37:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:48,153 INFO L225 Difference]: With dead ends: 553 [2021-11-20 23:37:48,153 INFO L226 Difference]: Without dead ends: 399 [2021-11-20 23:37:48,153 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 [2021-11-20 23:37:48,154 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 50 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:48,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 294 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-20 23:37:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 381. [2021-11-20 23:37:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.2473684210526317) internal successors, (474), 380 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 474 transitions. [2021-11-20 23:37:48,518 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 474 transitions. Word has length 109 [2021-11-20 23:37:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:48,518 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 474 transitions. [2021-11-20 23:37:48,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 474 transitions. [2021-11-20 23:37:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 23:37:48,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:48,519 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] [2021-11-20 23:37:48,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-20 23:37:48,519 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1831546139, now seen corresponding path program 1 times [2021-11-20 23:37:48,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:48,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252029623] [2021-11-20 23:37:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:48,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:48,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:48,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252029623] [2021-11-20 23:37:48,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252029623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:48,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:48,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:48,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986890882] [2021-11-20 23:37:48,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:48,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:48,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:48,571 INFO L87 Difference]: Start difference. First operand 381 states and 474 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:49,411 INFO L93 Difference]: Finished difference Result 961 states and 1228 transitions. [2021-11-20 23:37:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:49,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-20 23:37:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:49,412 INFO L225 Difference]: With dead ends: 961 [2021-11-20 23:37:49,412 INFO L226 Difference]: Without dead ends: 671 [2021-11-20 23:37:49,413 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 [2021-11-20 23:37:49,413 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 43 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:49,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 294 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-11-20 23:37:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 637. [2021-11-20 23:37:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.2610062893081762) internal successors, (802), 636 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 802 transitions. [2021-11-20 23:37:50,212 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 802 transitions. Word has length 112 [2021-11-20 23:37:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:50,213 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 802 transitions. [2021-11-20 23:37:50,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 802 transitions. [2021-11-20 23:37:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 23:37:50,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:50,213 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] [2021-11-20 23:37:50,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-20 23:37:50,214 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1847435234, now seen corresponding path program 1 times [2021-11-20 23:37:50,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:50,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384948742] [2021-11-20 23:37:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:50,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:50,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:50,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384948742] [2021-11-20 23:37:50,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384948742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:50,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:50,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:50,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024324567] [2021-11-20 23:37:50,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:50,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:50,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:50,269 INFO L87 Difference]: Start difference. First operand 637 states and 802 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:51,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:51,868 INFO L93 Difference]: Finished difference Result 1729 states and 2212 transitions. [2021-11-20 23:37:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:51,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-20 23:37:51,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:51,871 INFO L225 Difference]: With dead ends: 1729 [2021-11-20 23:37:51,871 INFO L226 Difference]: Without dead ends: 1183 [2021-11-20 23:37:51,872 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 [2021-11-20 23:37:51,872 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 33 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:51,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 294 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:37:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-20 23:37:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1117. [2021-11-20 23:37:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.2634408602150538) internal successors, (1410), 1116 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1410 transitions. [2021-11-20 23:37:53,353 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1410 transitions. Word has length 115 [2021-11-20 23:37:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:53,353 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 1410 transitions. [2021-11-20 23:37:53,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1410 transitions. [2021-11-20 23:37:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 23:37:53,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:53,355 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] [2021-11-20 23:37:53,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-20 23:37:53,355 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:37:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:53,356 INFO L85 PathProgramCache]: Analyzing trace with hash 208761750, now seen corresponding path program 1 times [2021-11-20 23:37:53,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:53,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608260433] [2021-11-20 23:37:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:53,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:53,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:53,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608260433] [2021-11-20 23:37:53,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608260433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:53,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:53,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:37:53,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25193959] [2021-11-20 23:37:53,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:53,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:37:53,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:37:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:37:53,427 INFO L87 Difference]: Start difference. First operand 1117 states and 1410 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:58,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:58,283 INFO L93 Difference]: Finished difference Result 4416 states and 5607 transitions. [2021-11-20 23:37:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:37:58,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-20 23:37:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:58,288 INFO L225 Difference]: With dead ends: 4416 [2021-11-20 23:37:58,288 INFO L226 Difference]: Without dead ends: 3390 [2021-11-20 23:37:58,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:37:58,291 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 814 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:58,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 1355 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:37:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2021-11-20 23:38:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 1563. [2021-11-20 23:38:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 1.2496798975672214) internal successors, (1952), 1562 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1952 transitions. [2021-11-20 23:38:00,380 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1952 transitions. Word has length 118 [2021-11-20 23:38:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:00,381 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 1952 transitions. [2021-11-20 23:38:00,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1952 transitions. [2021-11-20 23:38:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 23:38:00,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:00,381 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] [2021-11-20 23:38:00,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-20 23:38:00,382 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:00,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:00,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1759867255, now seen corresponding path program 1 times [2021-11-20 23:38:00,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:00,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869229497] [2021-11-20 23:38:00,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:00,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:00,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:00,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869229497] [2021-11-20 23:38:00,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869229497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:00,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:00,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:38:00,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652015302] [2021-11-20 23:38:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:00,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:38:00,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:38:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:38:00,570 INFO L87 Difference]: Start difference. First operand 1563 states and 1952 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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) [2021-11-20 23:38:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:02,872 INFO L93 Difference]: Finished difference Result 3037 states and 3808 transitions. [2021-11-20 23:38:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:38:02,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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 [2021-11-20 23:38:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:02,875 INFO L225 Difference]: With dead ends: 3037 [2021-11-20 23:38:02,875 INFO L226 Difference]: Without dead ends: 1565 [2021-11-20 23:38:02,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:38:02,880 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 568 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:02,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 354 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:38:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-11-20 23:38:05,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1563. [2021-11-20 23:38:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 1.2490396927016645) internal successors, (1951), 1562 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1951 transitions. [2021-11-20 23:38:05,087 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1951 transitions. Word has length 120 [2021-11-20 23:38:05,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:05,088 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 1951 transitions. [2021-11-20 23:38:05,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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) [2021-11-20 23:38:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1951 transitions. [2021-11-20 23:38:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 23:38:05,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:05,090 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] [2021-11-20 23:38:05,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-20 23:38:05,090 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:05,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1095330802, now seen corresponding path program 1 times [2021-11-20 23:38:05,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:05,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342237961] [2021-11-20 23:38:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:05,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:05,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342237961] [2021-11-20 23:38:05,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342237961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:05,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:05,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:05,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175248037] [2021-11-20 23:38:05,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:05,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:05,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:05,156 INFO L87 Difference]: Start difference. First operand 1563 states and 1951 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2021-11-20 23:38:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:08,377 INFO L93 Difference]: Finished difference Result 3661 states and 4590 transitions. [2021-11-20 23:38:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:38:08,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 [2021-11-20 23:38:08,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:08,380 INFO L225 Difference]: With dead ends: 3661 [2021-11-20 23:38:08,380 INFO L226 Difference]: Without dead ends: 2189 [2021-11-20 23:38:08,382 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 [2021-11-20 23:38:08,382 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 79 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:08,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 226 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:38:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2021-11-20 23:38:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2021-11-20 23:38:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.2433668801463862) internal successors, (2718), 2186 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2718 transitions. [2021-11-20 23:38:11,594 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2718 transitions. Word has length 120 [2021-11-20 23:38:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:11,594 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 2718 transitions. [2021-11-20 23:38:11,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2021-11-20 23:38:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2718 transitions. [2021-11-20 23:38:11,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 23:38:11,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:11,596 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] [2021-11-20 23:38:11,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-20 23:38:11,596 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash 871204805, now seen corresponding path program 1 times [2021-11-20 23:38:11,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:11,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620838451] [2021-11-20 23:38:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:11,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:11,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:11,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620838451] [2021-11-20 23:38:11,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620838451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:11,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:11,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:38:11,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366701630] [2021-11-20 23:38:11,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:11,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:38:11,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:11,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:38:11,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:38:11,698 INFO L87 Difference]: Start difference. First operand 2187 states and 2718 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:16,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:16,726 INFO L93 Difference]: Finished difference Result 3014 states and 3724 transitions. [2021-11-20 23:38:16,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:38:16,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-20 23:38:16,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:16,730 INFO L225 Difference]: With dead ends: 3014 [2021-11-20 23:38:16,730 INFO L226 Difference]: Without dead ends: 3012 [2021-11-20 23:38:16,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:38:16,731 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 326 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:16,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 942 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:38:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2021-11-20 23:38:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2187. [2021-11-20 23:38:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.2287282708142726) internal successors, (2686), 2186 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2686 transitions. [2021-11-20 23:38:19,927 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2686 transitions. Word has length 121 [2021-11-20 23:38:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:19,928 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 2686 transitions. [2021-11-20 23:38:19,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2686 transitions. [2021-11-20 23:38:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-20 23:38:19,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:19,929 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:19,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-20 23:38:19,930 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1902278096, now seen corresponding path program 1 times [2021-11-20 23:38:19,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:19,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255502908] [2021-11-20 23:38:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:19,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 23:38:20,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:20,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255502908] [2021-11-20 23:38:20,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255502908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:20,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:20,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:38:20,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143934850] [2021-11-20 23:38:20,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:20,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:38:20,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:38:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:38:20,108 INFO L87 Difference]: Start difference. First operand 2187 states and 2686 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:25,333 INFO L93 Difference]: Finished difference Result 5483 states and 6753 transitions. [2021-11-20 23:38:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:38:25,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 140 [2021-11-20 23:38:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:25,366 INFO L225 Difference]: With dead ends: 5483 [2021-11-20 23:38:25,366 INFO L226 Difference]: Without dead ends: 3381 [2021-11-20 23:38:25,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:38:25,370 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 511 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:25,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 405 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:38:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2021-11-20 23:38:28,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 2187. [2021-11-20 23:38:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.2282708142726442) internal successors, (2685), 2186 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2685 transitions. [2021-11-20 23:38:28,615 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2685 transitions. Word has length 140 [2021-11-20 23:38:28,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:28,615 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 2685 transitions. [2021-11-20 23:38:28,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:28,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2685 transitions. [2021-11-20 23:38:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-20 23:38:28,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:28,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:28,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-20 23:38:28,618 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:28,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 292618243, now seen corresponding path program 1 times [2021-11-20 23:38:28,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:28,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015160705] [2021-11-20 23:38:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:28,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 23:38:29,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015160705] [2021-11-20 23:38:29,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015160705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:29,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:29,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-20 23:38:29,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643897974] [2021-11-20 23:38:29,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:29,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 23:38:29,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 23:38:29,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:38:29,646 INFO L87 Difference]: Start difference. First operand 2187 states and 2685 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:41,239 INFO L93 Difference]: Finished difference Result 8395 states and 10356 transitions. [2021-11-20 23:38:41,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 23:38:41,240 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 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 [2021-11-20 23:38:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:41,253 INFO L225 Difference]: With dead ends: 8395 [2021-11-20 23:38:41,253 INFO L226 Difference]: Without dead ends: 6292 [2021-11-20 23:38:41,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=394, Invalid=1862, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:38:41,258 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 1714 mSDsluCounter, 4681 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:41,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1714 Valid, 4970 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:38:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6292 states. [2021-11-20 23:38:44,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6292 to 2207. [2021-11-20 23:38:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2206 states have (on average 1.2275611967361741) internal successors, (2708), 2206 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2708 transitions. [2021-11-20 23:38:44,450 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2708 transitions. Word has length 142 [2021-11-20 23:38:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:44,451 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2708 transitions. [2021-11-20 23:38:44,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2708 transitions. [2021-11-20 23:38:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-20 23:38:44,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:44,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:44,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-20 23:38:44,452 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-20 23:38:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:44,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1130396807, now seen corresponding path program 1 times [2021-11-20 23:38:44,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:44,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734753875] [2021-11-20 23:38:44,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:44,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:49,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:49,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734753875] [2021-11-20 23:38:49,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734753875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:38:49,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475130676] [2021-11-20 23:38:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:49,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:38:49,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:49,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:38:49,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35c9cb49-22f8-4dee-b149-17b42ae900a3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:38:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:50,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-20 23:38:50,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:33,543 INFO L328 TraceCheckSpWp]: Computing backward predicates...