./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V --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 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:51:52,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:51:52,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:51:52,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:51:52,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:51:52,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:51:52,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:51:52,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:51:52,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:51:52,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:51:52,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:51:52,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:51:52,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:51:52,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:51:52,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:51:52,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:51:52,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:51:52,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:51:52,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:51:52,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:51:52,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:51:52,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:51:52,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:51:52,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:51:52,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:51:52,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:51:52,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:51:52,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:51:52,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:51:52,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:51:52,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:51:52,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:51:52,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:51:52,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:51:52,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:51:52,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:51:52,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:51:52,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:51:52,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:51:52,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:51:52,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:51:52,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:51:52,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:51:52,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:51:52,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:51:52,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:51:52,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:51:52,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:51:52,897 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:51:52,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:51:52,898 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:51:52,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:51:52,899 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:51:52,899 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:51:52,900 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:51:52,900 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:51:52,900 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:51:52,900 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:51:52,900 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:51:52,901 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:51:52,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:51:52,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:51:52,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:51:52,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:51:52,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:51:52,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:51:52,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:51:52,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:51:52,906 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:51:52,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:51:52,906 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:51:52,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:51:52,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:51:52,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:51:52,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:52,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:51:52,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:51:52,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:51:52,909 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:51:52,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:51:52,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:51:52,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:51:52,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:51:52,910 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e [2021-11-23 03:51:53,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:51:53,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:51:53,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:51:53,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:51:53,362 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:51:53,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2021-11-23 03:51:53,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/data/877c5e932/2344571b92ff49da8defedba05097723/FLAGafe4ee0eb [2021-11-23 03:51:54,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:51:54,110 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2021-11-23 03:51:54,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/data/877c5e932/2344571b92ff49da8defedba05097723/FLAGafe4ee0eb [2021-11-23 03:51:54,373 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/data/877c5e932/2344571b92ff49da8defedba05097723 [2021-11-23 03:51:54,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:51:54,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:51:54,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:51:54,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:51:54,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:51:54,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:54" (1/1) ... [2021-11-23 03:51:54,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c877524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:54, skipping insertion in model container [2021-11-23 03:51:54,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:54" (1/1) ... [2021-11-23 03:51:54,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:51:54,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:51:54,688 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-23 03:51:55,095 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47275,47288] [2021-11-23 03:51:55,101 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47463,47476] [2021-11-23 03:51:55,113 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48230,48243] [2021-11-23 03:51:55,115 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48344,48357] [2021-11-23 03:51:55,121 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48816,48829] [2021-11-23 03:51:55,122 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48872,48885] [2021-11-23 03:51:55,130 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49384,49397] [2021-11-23 03:51:55,131 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49443,49456] [2021-11-23 03:51:55,133 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49522,49535] [2021-11-23 03:51:55,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:51:55,142 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:51:55,171 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-23 03:51:55,220 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47275,47288] [2021-11-23 03:51:55,225 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47463,47476] [2021-11-23 03:51:55,241 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48230,48243] [2021-11-23 03:51:55,243 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48344,48357] [2021-11-23 03:51:55,251 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48816,48829] [2021-11-23 03:51:55,256 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48872,48885] [2021-11-23 03:51:55,263 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49384,49397] [2021-11-23 03:51:55,268 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49443,49456] [2021-11-23 03:51:55,277 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_49f8ca1a-32fa-4c57-8624-2009563bf6de/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49522,49535] [2021-11-23 03:51:55,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:51:55,341 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:51:55,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55 WrapperNode [2021-11-23 03:51:55,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:51:55,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:51:55,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:51:55,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:51:55,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,422 INFO L137 Inliner]: procedures = 278, calls = 103, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 416 [2021-11-23 03:51:55,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:51:55,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:51:55,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:51:55,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:51:55,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:51:55,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:51:55,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:51:55,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:51:55,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (1/1) ... [2021-11-23 03:51:55,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:55,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:55,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:51:55,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f8ca1a-32fa-4c57-8624-2009563bf6de/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:51:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2021-11-23 03:51:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2021-11-23 03:51:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:51:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:51:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:51:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:51:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:51:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:51:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:51:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:51:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:51:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:51:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:51:55,602 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 03:51:55,799 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:51:55,800 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:51:56,609 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:51:56,629 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:51:56,629 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:51:56,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:56 BoogieIcfgContainer [2021-11-23 03:51:56,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:51:56,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:51:56,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:51:56,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:51:56,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:51:54" (1/3) ... [2021-11-23 03:51:56,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5846e979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:56, skipping insertion in model container [2021-11-23 03:51:56,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:55" (2/3) ... [2021-11-23 03:51:56,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5846e979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:56, skipping insertion in model container [2021-11-23 03:51:56,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:56" (3/3) ... [2021-11-23 03:51:56,644 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.i [2021-11-23 03:51:56,649 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 03:51:56,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:51:56,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-23 03:51:56,651 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 03:51:56,723 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,723 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,724 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,724 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,724 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,724 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,724 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,725 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,725 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,725 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,725 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,725 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,725 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,726 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,726 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,726 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,726 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,726 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,726 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,727 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,727 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,727 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,728 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,728 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,728 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,728 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,728 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,728 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,729 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,729 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,729 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,729 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,729 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,729 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,730 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,731 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,731 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,731 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,731 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,734 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,735 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,736 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,739 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,741 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,741 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,742 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,750 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,751 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,752 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,752 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,752 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,752 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,752 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,752 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,753 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,753 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,753 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,753 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,753 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,753 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,753 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,754 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,754 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,754 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,754 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,754 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,754 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,755 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,755 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,755 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,755 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,755 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,755 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,774 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,774 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,776 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,776 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,777 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,777 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,777 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,778 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,778 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,778 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,778 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,778 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,779 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,779 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,779 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,779 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,779 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,780 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,780 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,780 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,780 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,780 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,780 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,782 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,782 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,782 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,782 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,782 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,783 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,783 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,783 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,783 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,783 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,793 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,794 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,794 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,794 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,795 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,795 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,795 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,795 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,795 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,796 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,796 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,796 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,796 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,796 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,798 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,798 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,799 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,800 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,800 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,808 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,808 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,808 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,808 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,808 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,816 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,821 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,821 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,821 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,821 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,821 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,821 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,822 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,822 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,822 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,822 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,822 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,823 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,823 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,823 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,823 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,823 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,828 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,828 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,832 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,833 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,833 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,833 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,833 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,834 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,834 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,834 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,834 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,835 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,835 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,835 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,835 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,836 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,836 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,836 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,836 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,836 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,836 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,837 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,837 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,837 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,837 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,837 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,838 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,838 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,838 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,838 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,838 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,839 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,839 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,839 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,839 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,839 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,840 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,840 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,840 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,840 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,840 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,841 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,841 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,841 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,841 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,856 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 03:51:56,861 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-23 03:51:56,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:51:56,911 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 [2021-11-23 03:51:56,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-23 03:51:56,933 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-23 03:51:56,947 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 478 places, 507 transitions, 1022 flow [2021-11-23 03:51:56,950 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 478 places, 507 transitions, 1022 flow [2021-11-23 03:51:56,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 507 transitions, 1022 flow [2021-11-23 03:51:57,146 INFO L129 PetriNetUnfolder]: 33/506 cut-off events. [2021-11-23 03:51:57,146 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-23 03:51:57,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 506 events. 33/506 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1168 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 352. Up to 3 conditions per place. [2021-11-23 03:51:57,189 INFO L116 LiptonReduction]: Number of co-enabled transitions 36864 [2021-11-23 03:52:32,644 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 03:52:41,006 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 241 DAG size of output: 226 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 03:52:44,130 INFO L131 LiptonReduction]: Checked pairs total: 142414 [2021-11-23 03:52:44,130 INFO L133 LiptonReduction]: Total number of compositions: 546 [2021-11-23 03:52:44,139 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 106 places, 123 transitions, 254 flow [2021-11-23 03:52:44,208 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-11-23 03:52:44,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:44,220 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-11-23 03:52:44,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1791, now seen corresponding path program 1 times [2021-11-23 03:52:44,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:44,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901181907] [2021-11-23 03:52:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:44,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:44,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:44,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901181907] [2021-11-23 03:52:44,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901181907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:44,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:44,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-11-23 03:52:44,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871977701] [2021-11-23 03:52:44,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:44,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:52:44,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:44,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:52:44,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:52:44,381 INFO L87 Difference]: Start difference. First operand has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:44,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:44,595 INFO L93 Difference]: Finished difference Result 1450 states and 3256 transitions. [2021-11-23 03:52:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:52:44,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2021-11-23 03:52:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:44,622 INFO L225 Difference]: With dead ends: 1450 [2021-11-23 03:52:44,622 INFO L226 Difference]: Without dead ends: 1450 [2021-11-23 03:52:44,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:52:44,627 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:44,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:52:44,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-23 03:52:44,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2021-11-23 03:52:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1440 states have (on average 2.261111111111111) internal successors, (3256), 1449 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 3256 transitions. [2021-11-23 03:52:44,785 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 3256 transitions. Word has length 1 [2021-11-23 03:52:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:44,785 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 3256 transitions. [2021-11-23 03:52:44,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 3256 transitions. [2021-11-23 03:52:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 03:52:44,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:44,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 03:52:44,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:52:44,788 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:44,789 INFO L85 PathProgramCache]: Analyzing trace with hash 946258214, now seen corresponding path program 1 times [2021-11-23 03:52:44,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:44,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230699144] [2021-11-23 03:52:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:44,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:44,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:44,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230699144] [2021-11-23 03:52:44,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230699144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:44,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:44,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:44,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480350585] [2021-11-23 03:52:44,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:44,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:44,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:44,944 INFO L87 Difference]: Start difference. First operand 1450 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:45,304 INFO L93 Difference]: Finished difference Result 2723 states and 6126 transitions. [2021-11-23 03:52:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:45,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-23 03:52:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:45,327 INFO L225 Difference]: With dead ends: 2723 [2021-11-23 03:52:45,327 INFO L226 Difference]: Without dead ends: 2723 [2021-11-23 03:52:45,327 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 [2021-11-23 03:52:45,329 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 97 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:45,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 48 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:52:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-11-23 03:52:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1469. [2021-11-23 03:52:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1459 states have (on average 2.259081562714188) internal successors, (3296), 1468 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 3296 transitions. [2021-11-23 03:52:45,395 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 3296 transitions. Word has length 6 [2021-11-23 03:52:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:45,395 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 3296 transitions. [2021-11-23 03:52:45,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 3296 transitions. [2021-11-23 03:52:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:52:45,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:45,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:45,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:52:45,397 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:45,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash -729302322, now seen corresponding path program 1 times [2021-11-23 03:52:45,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:45,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786775215] [2021-11-23 03:52:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:45,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:45,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:45,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786775215] [2021-11-23 03:52:45,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786775215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:45,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:45,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:52:45,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262318320] [2021-11-23 03:52:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:45,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:45,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:45,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:45,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:45,480 INFO L87 Difference]: Start difference. First operand 1469 states and 3296 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:45,723 INFO L93 Difference]: Finished difference Result 1469 states and 3277 transitions. [2021-11-23 03:52:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:45,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-23 03:52:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:45,735 INFO L225 Difference]: With dead ends: 1469 [2021-11-23 03:52:45,735 INFO L226 Difference]: Without dead ends: 1469 [2021-11-23 03:52:45,736 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 [2021-11-23 03:52:45,737 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 110 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:45,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 27 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:52:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-23 03:52:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2021-11-23 03:52:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1459 states have (on average 2.246058944482522) internal successors, (3277), 1468 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 3277 transitions. [2021-11-23 03:52:45,789 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 3277 transitions. Word has length 7 [2021-11-23 03:52:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:45,789 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 3277 transitions. [2021-11-23 03:52:45,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:45,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 3277 transitions. [2021-11-23 03:52:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:52:45,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:45,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:45,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:52:45,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1122511823, now seen corresponding path program 1 times [2021-11-23 03:52:45,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:45,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231919879] [2021-11-23 03:52:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:45,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:45,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231919879] [2021-11-23 03:52:45,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231919879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:45,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:45,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:52:45,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636185532] [2021-11-23 03:52:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:45,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:52:45,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:52:45,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:52:45,940 INFO L87 Difference]: Start difference. First operand 1469 states and 3277 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:46,702 INFO L93 Difference]: Finished difference Result 1855 states and 4138 transitions. [2021-11-23 03:52:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:52:46,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-23 03:52:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:46,716 INFO L225 Difference]: With dead ends: 1855 [2021-11-23 03:52:46,716 INFO L226 Difference]: Without dead ends: 1855 [2021-11-23 03:52:46,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:52:46,717 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:46,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 25 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 03:52:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-23 03:52:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1576. [2021-11-23 03:52:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1566 states have (on average 2.2490421455938696) internal successors, (3522), 1575 states have internal predecessors, (3522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 3522 transitions. [2021-11-23 03:52:46,771 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 3522 transitions. Word has length 8 [2021-11-23 03:52:46,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:46,772 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 3522 transitions. [2021-11-23 03:52:46,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 3522 transitions. [2021-11-23 03:52:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 03:52:46,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:46,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:46,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:52:46,775 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:46,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash -696730677, now seen corresponding path program 1 times [2021-11-23 03:52:46,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:46,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898615775] [2021-11-23 03:52:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:46,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:46,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:46,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898615775] [2021-11-23 03:52:46,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898615775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:46,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:46,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:52:46,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376123285] [2021-11-23 03:52:46,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:46,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:52:46,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:46,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:52:46,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:46,907 INFO L87 Difference]: Start difference. First operand 1576 states and 3522 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:47,231 INFO L93 Difference]: Finished difference Result 2584 states and 5768 transitions. [2021-11-23 03:52:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:52:47,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-23 03:52:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:47,250 INFO L225 Difference]: With dead ends: 2584 [2021-11-23 03:52:47,250 INFO L226 Difference]: Without dead ends: 2584 [2021-11-23 03:52:47,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:52:47,253 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 73 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:47,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 48 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:52:47,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2021-11-23 03:52:47,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1633. [2021-11-23 03:52:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1623 states have (on average 2.243992606284658) internal successors, (3642), 1632 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 3642 transitions. [2021-11-23 03:52:47,329 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 3642 transitions. Word has length 10 [2021-11-23 03:52:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:47,329 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 3642 transitions. [2021-11-23 03:52:47,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:47,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 3642 transitions. [2021-11-23 03:52:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:52:47,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:47,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:47,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:52:47,338 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:47,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash 344091785, now seen corresponding path program 1 times [2021-11-23 03:52:47,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:47,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733492977] [2021-11-23 03:52:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:47,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:47,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:47,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733492977] [2021-11-23 03:52:47,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733492977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:47,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:47,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:52:47,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936509055] [2021-11-23 03:52:47,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:47,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:52:47,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:52:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:52:47,590 INFO L87 Difference]: Start difference. First operand 1633 states and 3642 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:49,017 INFO L93 Difference]: Finished difference Result 2374 states and 5281 transitions. [2021-11-23 03:52:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 03:52:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-23 03:52:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:49,036 INFO L225 Difference]: With dead ends: 2374 [2021-11-23 03:52:49,036 INFO L226 Difference]: Without dead ends: 2374 [2021-11-23 03:52:49,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:52:49,037 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 387 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:49,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 24 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 03:52:49,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-11-23 03:52:49,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1647. [2021-11-23 03:52:49,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1637 states have (on average 2.244349419670128) internal successors, (3674), 1646 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 3674 transitions. [2021-11-23 03:52:49,098 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 3674 transitions. Word has length 14 [2021-11-23 03:52:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:49,099 INFO L470 AbstractCegarLoop]: Abstraction has 1647 states and 3674 transitions. [2021-11-23 03:52:49,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 3674 transitions. [2021-11-23 03:52:49,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:52:49,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:49,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:49,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:52:49,102 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2033711913, now seen corresponding path program 1 times [2021-11-23 03:52:49,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:49,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401161571] [2021-11-23 03:52:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:49,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:49,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:49,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401161571] [2021-11-23 03:52:49,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401161571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:49,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:49,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:52:49,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370878234] [2021-11-23 03:52:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:49,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:52:49,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:49,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:52:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:52:49,285 INFO L87 Difference]: Start difference. First operand 1647 states and 3674 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:50,144 INFO L93 Difference]: Finished difference Result 2628 states and 5857 transitions. [2021-11-23 03:52:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:52:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-23 03:52:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:50,163 INFO L225 Difference]: With dead ends: 2628 [2021-11-23 03:52:50,163 INFO L226 Difference]: Without dead ends: 2591 [2021-11-23 03:52:50,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:52:50,164 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 120 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:50,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 27 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 03:52:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-11-23 03:52:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1932. [2021-11-23 03:52:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1922 states have (on average 2.27471383975026) internal successors, (4372), 1931 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 4372 transitions. [2021-11-23 03:52:50,243 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 4372 transitions. Word has length 14 [2021-11-23 03:52:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:50,244 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 4372 transitions. [2021-11-23 03:52:50,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 4372 transitions. [2021-11-23 03:52:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:52:50,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:50,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:50,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:52:50,247 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1608731715, now seen corresponding path program 2 times [2021-11-23 03:52:50,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:50,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413079587] [2021-11-23 03:52:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:50,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:50,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:50,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413079587] [2021-11-23 03:52:50,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413079587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:50,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:50,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:52:50,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662815698] [2021-11-23 03:52:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:50,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:52:50,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:52:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:52:50,459 INFO L87 Difference]: Start difference. First operand 1932 states and 4372 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:52,424 INFO L93 Difference]: Finished difference Result 2390 states and 5367 transitions. [2021-11-23 03:52:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 03:52:52,425 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-23 03:52:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:52,441 INFO L225 Difference]: With dead ends: 2390 [2021-11-23 03:52:52,441 INFO L226 Difference]: Without dead ends: 2390 [2021-11-23 03:52:52,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:52:52,443 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 470 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:52,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 22 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 03:52:52,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-23 03:52:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1920. [2021-11-23 03:52:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1910 states have (on average 2.2743455497382197) internal successors, (4344), 1919 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 4344 transitions. [2021-11-23 03:52:52,511 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 4344 transitions. Word has length 14 [2021-11-23 03:52:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:52,512 INFO L470 AbstractCegarLoop]: Abstraction has 1920 states and 4344 transitions. [2021-11-23 03:52:52,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 4344 transitions. [2021-11-23 03:52:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:52:52,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:52,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:52,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:52:52,514 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:52,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:52,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2076579246, now seen corresponding path program 1 times [2021-11-23 03:52:52,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:52,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483108308] [2021-11-23 03:52:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:52,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:52,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:52,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483108308] [2021-11-23 03:52:52,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483108308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:52,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:52,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 03:52:52,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121283026] [2021-11-23 03:52:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:52,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:52:52,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:52,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:52:52,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:52:52,753 INFO L87 Difference]: Start difference. First operand 1920 states and 4344 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:54,606 INFO L93 Difference]: Finished difference Result 2891 states and 6497 transitions. [2021-11-23 03:52:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:52:54,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:52:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:54,627 INFO L225 Difference]: With dead ends: 2891 [2021-11-23 03:52:54,627 INFO L226 Difference]: Without dead ends: 2891 [2021-11-23 03:52:54,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:52:54,629 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 476 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:54,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 24 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 03:52:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-11-23 03:52:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1965. [2021-11-23 03:52:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1955 states have (on average 2.2751918158567777) internal successors, (4448), 1964 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 4448 transitions. [2021-11-23 03:52:54,701 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 4448 transitions. Word has length 15 [2021-11-23 03:52:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:54,701 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 4448 transitions. [2021-11-23 03:52:54,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 4448 transitions. [2021-11-23 03:52:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:52:54,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:54,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:54,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:52:54,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1137616898, now seen corresponding path program 1 times [2021-11-23 03:52:54,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:54,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357543231] [2021-11-23 03:52:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:54,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:54,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:54,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357543231] [2021-11-23 03:52:54,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357543231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:54,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:54,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:52:54,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143610255] [2021-11-23 03:52:54,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:54,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:52:54,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:54,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:52:54,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:52:54,893 INFO L87 Difference]: Start difference. First operand 1965 states and 4448 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:56,116 INFO L93 Difference]: Finished difference Result 2783 states and 6259 transitions. [2021-11-23 03:52:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:52:56,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:52:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:56,126 INFO L225 Difference]: With dead ends: 2783 [2021-11-23 03:52:56,126 INFO L226 Difference]: Without dead ends: 2783 [2021-11-23 03:52:56,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:52:56,127 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 214 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:56,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 12 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 03:52:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2021-11-23 03:52:56,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2121. [2021-11-23 03:52:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2111 states have (on average 2.2837517764092845) internal successors, (4821), 2120 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 4821 transitions. [2021-11-23 03:52:56,228 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 4821 transitions. Word has length 15 [2021-11-23 03:52:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:56,228 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 4821 transitions. [2021-11-23 03:52:56,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 4821 transitions. [2021-11-23 03:52:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:52:56,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:56,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:56,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:52:56,231 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1658931202, now seen corresponding path program 2 times [2021-11-23 03:52:56,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:56,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691171318] [2021-11-23 03:52:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:56,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:56,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:56,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691171318] [2021-11-23 03:52:56,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691171318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:56,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:56,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:52:56,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105798514] [2021-11-23 03:52:56,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:56,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:52:56,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:52:56,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:52:56,687 INFO L87 Difference]: Start difference. First operand 2121 states and 4821 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:58,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:58,377 INFO L93 Difference]: Finished difference Result 2704 states and 6031 transitions. [2021-11-23 03:52:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:52:58,378 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:52:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:58,385 INFO L225 Difference]: With dead ends: 2704 [2021-11-23 03:52:58,385 INFO L226 Difference]: Without dead ends: 2704 [2021-11-23 03:52:58,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2021-11-23 03:52:58,387 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 400 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:58,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 24 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 03:52:58,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2021-11-23 03:52:58,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1929. [2021-11-23 03:52:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1919 states have (on average 2.2652423137050546) internal successors, (4347), 1928 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 4347 transitions. [2021-11-23 03:52:58,450 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 4347 transitions. Word has length 15 [2021-11-23 03:52:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:58,451 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 4347 transitions. [2021-11-23 03:52:58,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:52:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 4347 transitions. [2021-11-23 03:52:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:52:58,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:58,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:58,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:52:58,453 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:52:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:58,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2109978108, now seen corresponding path program 3 times [2021-11-23 03:52:58,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:58,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255120965] [2021-11-23 03:52:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:58,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:52:58,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255120965] [2021-11-23 03:52:58,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255120965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:52:58,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:52:58,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:52:58,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877146499] [2021-11-23 03:52:58,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:52:58,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:52:58,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:52:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:52:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:52:58,795 INFO L87 Difference]: Start difference. First operand 1929 states and 4347 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:01,827 INFO L93 Difference]: Finished difference Result 2686 states and 5999 transitions. [2021-11-23 03:53:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 03:53:01,827 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:01,835 INFO L225 Difference]: With dead ends: 2686 [2021-11-23 03:53:01,835 INFO L226 Difference]: Without dead ends: 2686 [2021-11-23 03:53:01,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 03:53:01,836 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 493 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:01,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 35 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:53:01,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-11-23 03:53:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1973. [2021-11-23 03:53:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1963 states have (on average 2.270504330106979) internal successors, (4457), 1972 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4457 transitions. [2021-11-23 03:53:01,914 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4457 transitions. Word has length 15 [2021-11-23 03:53:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:01,914 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4457 transitions. [2021-11-23 03:53:01,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4457 transitions. [2021-11-23 03:53:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:01,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:01,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:01,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:53:01,917 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:01,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1589137872, now seen corresponding path program 4 times [2021-11-23 03:53:01,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:01,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215645784] [2021-11-23 03:53:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:01,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:02,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:02,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215645784] [2021-11-23 03:53:02,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215645784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:02,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:02,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:02,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729787711] [2021-11-23 03:53:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:02,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:02,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:02,283 INFO L87 Difference]: Start difference. First operand 1973 states and 4457 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:05,778 INFO L93 Difference]: Finished difference Result 2664 states and 5973 transitions. [2021-11-23 03:53:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:53:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:05,786 INFO L225 Difference]: With dead ends: 2664 [2021-11-23 03:53:05,786 INFO L226 Difference]: Without dead ends: 2664 [2021-11-23 03:53:05,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 03:53:05,788 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 428 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:05,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 35 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:53:05,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-11-23 03:53:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1973. [2021-11-23 03:53:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1963 states have (on average 2.270504330106979) internal successors, (4457), 1972 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4457 transitions. [2021-11-23 03:53:05,849 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4457 transitions. Word has length 15 [2021-11-23 03:53:05,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:05,850 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4457 transitions. [2021-11-23 03:53:05,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4457 transitions. [2021-11-23 03:53:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:05,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:05,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:05,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:53:05,852 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:05,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:05,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1218008820, now seen corresponding path program 2 times [2021-11-23 03:53:05,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:05,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228560633] [2021-11-23 03:53:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:05,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:06,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:06,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228560633] [2021-11-23 03:53:06,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228560633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:06,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:06,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:53:06,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568539301] [2021-11-23 03:53:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:06,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:53:06,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:53:06,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:53:06,044 INFO L87 Difference]: Start difference. First operand 1973 states and 4457 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:08,213 INFO L93 Difference]: Finished difference Result 2480 states and 5547 transitions. [2021-11-23 03:53:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 03:53:08,215 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:08,223 INFO L225 Difference]: With dead ends: 2480 [2021-11-23 03:53:08,223 INFO L226 Difference]: Without dead ends: 2480 [2021-11-23 03:53:08,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:53:08,224 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 689 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:08,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 22 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 03:53:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2021-11-23 03:53:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1965. [2021-11-23 03:53:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1955 states have (on average 2.2705882352941176) internal successors, (4439), 1964 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 4439 transitions. [2021-11-23 03:53:08,294 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 4439 transitions. Word has length 15 [2021-11-23 03:53:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:08,294 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 4439 transitions. [2021-11-23 03:53:08,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 4439 transitions. [2021-11-23 03:53:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:08,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:08,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:08,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:53:08,296 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:08,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1157488478, now seen corresponding path program 3 times [2021-11-23 03:53:08,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:08,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851298337] [2021-11-23 03:53:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:08,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:08,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:08,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851298337] [2021-11-23 03:53:08,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851298337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:08,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:08,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:53:08,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216203936] [2021-11-23 03:53:08,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:08,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:53:08,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:08,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:53:08,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:53:08,484 INFO L87 Difference]: Start difference. First operand 1965 states and 4439 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:09,873 INFO L93 Difference]: Finished difference Result 2387 states and 5352 transitions. [2021-11-23 03:53:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 03:53:09,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:09,888 INFO L225 Difference]: With dead ends: 2387 [2021-11-23 03:53:09,888 INFO L226 Difference]: Without dead ends: 2387 [2021-11-23 03:53:09,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2021-11-23 03:53:09,889 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 627 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:09,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 22 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 03:53:09,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2021-11-23 03:53:09,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 1967. [2021-11-23 03:53:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1957 states have (on average 2.270311701584057) internal successors, (4443), 1966 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 4443 transitions. [2021-11-23 03:53:09,969 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 4443 transitions. Word has length 15 [2021-11-23 03:53:09,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:09,969 INFO L470 AbstractCegarLoop]: Abstraction has 1967 states and 4443 transitions. [2021-11-23 03:53:09,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 4443 transitions. [2021-11-23 03:53:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:09,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:09,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:09,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 03:53:09,971 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2097695960, now seen corresponding path program 4 times [2021-11-23 03:53:09,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:09,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257927342] [2021-11-23 03:53:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:09,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:10,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:10,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257927342] [2021-11-23 03:53:10,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257927342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:10,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:10,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:53:10,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376198539] [2021-11-23 03:53:10,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:10,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:53:10,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:53:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:53:10,145 INFO L87 Difference]: Start difference. First operand 1967 states and 4443 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:11,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:11,955 INFO L93 Difference]: Finished difference Result 2340 states and 5250 transitions. [2021-11-23 03:53:11,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:53:11,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:11,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:11,962 INFO L225 Difference]: With dead ends: 2340 [2021-11-23 03:53:11,962 INFO L226 Difference]: Without dead ends: 2340 [2021-11-23 03:53:11,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:53:11,964 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 464 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:11,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 22 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 03:53:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-11-23 03:53:12,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1953. [2021-11-23 03:53:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1943 states have (on average 2.2702007205352546) internal successors, (4411), 1952 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 4411 transitions. [2021-11-23 03:53:12,010 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 4411 transitions. Word has length 15 [2021-11-23 03:53:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:12,011 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 4411 transitions. [2021-11-23 03:53:12,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 4411 transitions. [2021-11-23 03:53:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:12,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:12,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:12,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 03:53:12,013 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:12,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:12,013 INFO L85 PathProgramCache]: Analyzing trace with hash -608276146, now seen corresponding path program 5 times [2021-11-23 03:53:12,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:12,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961330834] [2021-11-23 03:53:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:12,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:12,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:12,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961330834] [2021-11-23 03:53:12,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961330834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:12,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:12,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:12,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157090624] [2021-11-23 03:53:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:12,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:12,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:12,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:12,298 INFO L87 Difference]: Start difference. First operand 1953 states and 4411 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:15,894 INFO L93 Difference]: Finished difference Result 2499 states and 5589 transitions. [2021-11-23 03:53:15,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:53:15,894 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:15,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:15,900 INFO L225 Difference]: With dead ends: 2499 [2021-11-23 03:53:15,901 INFO L226 Difference]: Without dead ends: 2499 [2021-11-23 03:53:15,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=452, Invalid=1108, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:53:15,902 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 430 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:15,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 35 Invalid, 3078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:53:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-11-23 03:53:15,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1953. [2021-11-23 03:53:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1943 states have (on average 2.2702007205352546) internal successors, (4411), 1952 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 4411 transitions. [2021-11-23 03:53:15,951 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 4411 transitions. Word has length 15 [2021-11-23 03:53:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:15,951 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 4411 transitions. [2021-11-23 03:53:15,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:15,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 4411 transitions. [2021-11-23 03:53:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:15,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:15,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:15,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 03:53:15,953 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:15,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1652178058, now seen corresponding path program 6 times [2021-11-23 03:53:15,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:15,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351696382] [2021-11-23 03:53:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:15,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:16,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:16,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351696382] [2021-11-23 03:53:16,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351696382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:16,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:16,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:16,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112082774] [2021-11-23 03:53:16,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:16,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:16,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:16,223 INFO L87 Difference]: Start difference. First operand 1953 states and 4411 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:19,654 INFO L93 Difference]: Finished difference Result 2457 states and 5502 transitions. [2021-11-23 03:53:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:53:19,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:19,660 INFO L225 Difference]: With dead ends: 2457 [2021-11-23 03:53:19,660 INFO L226 Difference]: Without dead ends: 2457 [2021-11-23 03:53:19,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=471, Invalid=1169, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 03:53:19,661 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 405 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3104 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:19,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 35 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3104 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:53:19,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-11-23 03:53:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1957. [2021-11-23 03:53:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-23 03:53:19,709 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-23 03:53:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:19,709 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-23 03:53:19,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-23 03:53:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:19,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:19,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:19,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 03:53:19,712 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash 293412896, now seen corresponding path program 7 times [2021-11-23 03:53:19,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:19,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824050411] [2021-11-23 03:53:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:19,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:20,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824050411] [2021-11-23 03:53:20,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824050411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:20,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:20,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:20,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911194088] [2021-11-23 03:53:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:20,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:20,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:20,013 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:24,033 INFO L93 Difference]: Finished difference Result 2431 states and 5447 transitions. [2021-11-23 03:53:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:53:24,033 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:24,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:24,036 INFO L225 Difference]: With dead ends: 2431 [2021-11-23 03:53:24,036 INFO L226 Difference]: Without dead ends: 2431 [2021-11-23 03:53:24,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 03:53:24,037 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 396 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 3400 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:24,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 35 Invalid, 3438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3400 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:53:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-23 03:53:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1957. [2021-11-23 03:53:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-23 03:53:24,085 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-23 03:53:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:24,085 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-23 03:53:24,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-23 03:53:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:24,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:24,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:24,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 03:53:24,087 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1087560822, now seen corresponding path program 8 times [2021-11-23 03:53:24,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:24,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148871684] [2021-11-23 03:53:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:24,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:24,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:24,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148871684] [2021-11-23 03:53:24,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148871684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:24,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:24,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:24,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879577487] [2021-11-23 03:53:24,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:24,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:24,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:24,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:24,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:24,358 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:28,401 INFO L93 Difference]: Finished difference Result 2747 states and 6144 transitions. [2021-11-23 03:53:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 03:53:28,401 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:28,405 INFO L225 Difference]: With dead ends: 2747 [2021-11-23 03:53:28,405 INFO L226 Difference]: Without dead ends: 2747 [2021-11-23 03:53:28,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:53:28,406 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 430 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 3372 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:28,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 35 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3372 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 03:53:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-11-23 03:53:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1957. [2021-11-23 03:53:28,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-23 03:53:28,474 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-23 03:53:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:28,475 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-23 03:53:28,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-23 03:53:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:53:28,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:28,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:28,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 03:53:28,476 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -495046284, now seen corresponding path program 9 times [2021-11-23 03:53:28,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:28,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396778576] [2021-11-23 03:53:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:28,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:28,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:28,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396778576] [2021-11-23 03:53:28,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396778576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:28,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:28,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:28,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74975707] [2021-11-23 03:53:28,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:28,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:28,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:28,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:28,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:28,764 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:32,168 INFO L93 Difference]: Finished difference Result 2921 states and 6520 transitions. [2021-11-23 03:53:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 03:53:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-23 03:53:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:32,171 INFO L225 Difference]: With dead ends: 2921 [2021-11-23 03:53:32,171 INFO L226 Difference]: Without dead ends: 2921 [2021-11-23 03:53:32,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=409, Invalid=923, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 03:53:32,173 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 478 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:32,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 35 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 03:53:32,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-11-23 03:53:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1913. [2021-11-23 03:53:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1903 states have (on average 2.2643194955333685) internal successors, (4309), 1912 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 4309 transitions. [2021-11-23 03:53:32,251 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 4309 transitions. Word has length 15 [2021-11-23 03:53:32,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:32,251 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 4309 transitions. [2021-11-23 03:53:32,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 4309 transitions. [2021-11-23 03:53:32,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:53:32,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:32,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:32,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 03:53:32,253 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:32,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash 509178348, now seen corresponding path program 1 times [2021-11-23 03:53:32,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:32,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481706224] [2021-11-23 03:53:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:32,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:32,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:32,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481706224] [2021-11-23 03:53:32,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481706224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:32,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:32,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:53:32,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619117256] [2021-11-23 03:53:32,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:32,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:53:32,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:53:32,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:53:32,513 INFO L87 Difference]: Start difference. First operand 1913 states and 4309 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:34,945 INFO L93 Difference]: Finished difference Result 2945 states and 6553 transitions. [2021-11-23 03:53:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 03:53:34,946 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-23 03:53:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:34,950 INFO L225 Difference]: With dead ends: 2945 [2021-11-23 03:53:34,950 INFO L226 Difference]: Without dead ends: 2945 [2021-11-23 03:53:34,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:53:34,951 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 517 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:34,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 24 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:53:34,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-11-23 03:53:34,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1987. [2021-11-23 03:53:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1977 states have (on average 2.2660596863935254) internal successors, (4480), 1986 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 4480 transitions. [2021-11-23 03:53:35,006 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 4480 transitions. Word has length 16 [2021-11-23 03:53:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:35,006 INFO L470 AbstractCegarLoop]: Abstraction has 1987 states and 4480 transitions. [2021-11-23 03:53:35,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 4480 transitions. [2021-11-23 03:53:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:53:35,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:35,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:35,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 03:53:35,009 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash 424315018, now seen corresponding path program 2 times [2021-11-23 03:53:35,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:35,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077515025] [2021-11-23 03:53:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:35,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:35,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:35,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077515025] [2021-11-23 03:53:35,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077515025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:35,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:35,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:53:35,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659721973] [2021-11-23 03:53:35,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:35,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:53:35,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:53:35,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:53:35,246 INFO L87 Difference]: Start difference. First operand 1987 states and 4480 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:37,612 INFO L93 Difference]: Finished difference Result 3097 states and 6900 transitions. [2021-11-23 03:53:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 03:53:37,612 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-23 03:53:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:37,616 INFO L225 Difference]: With dead ends: 3097 [2021-11-23 03:53:37,616 INFO L226 Difference]: Without dead ends: 3097 [2021-11-23 03:53:37,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=368, Invalid=822, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 03:53:37,617 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 609 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:37,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 24 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 03:53:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-11-23 03:53:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 1982. [2021-11-23 03:53:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1972 states have (on average 2.265720081135903) internal successors, (4468), 1981 states have internal predecessors, (4468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 4468 transitions. [2021-11-23 03:53:37,663 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 4468 transitions. Word has length 16 [2021-11-23 03:53:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:37,664 INFO L470 AbstractCegarLoop]: Abstraction has 1982 states and 4468 transitions. [2021-11-23 03:53:37,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 4468 transitions. [2021-11-23 03:53:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:53:37,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:37,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:37,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 03:53:37,666 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:37,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash -962239554, now seen corresponding path program 3 times [2021-11-23 03:53:37,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:37,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237466006] [2021-11-23 03:53:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:37,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:37,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:37,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237466006] [2021-11-23 03:53:37,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237466006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:37,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:37,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:37,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699556553] [2021-11-23 03:53:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:37,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:37,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:37,863 INFO L87 Difference]: Start difference. First operand 1982 states and 4468 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:39,929 INFO L93 Difference]: Finished difference Result 2569 states and 5732 transitions. [2021-11-23 03:53:39,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 03:53:39,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-23 03:53:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:39,932 INFO L225 Difference]: With dead ends: 2569 [2021-11-23 03:53:39,932 INFO L226 Difference]: Without dead ends: 2569 [2021-11-23 03:53:39,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=396, Invalid=1010, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 03:53:39,934 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 680 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:39,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 22 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 03:53:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-11-23 03:53:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1974. [2021-11-23 03:53:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1964 states have (on average 2.2657841140529533) internal successors, (4450), 1973 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 4450 transitions. [2021-11-23 03:53:39,979 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 4450 transitions. Word has length 16 [2021-11-23 03:53:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:39,979 INFO L470 AbstractCegarLoop]: Abstraction has 1974 states and 4450 transitions. [2021-11-23 03:53:39,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:39,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 4450 transitions. [2021-11-23 03:53:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:53:39,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:39,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:39,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 03:53:39,981 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:39,982 INFO L85 PathProgramCache]: Analyzing trace with hash -815264520, now seen corresponding path program 4 times [2021-11-23 03:53:39,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:39,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154616781] [2021-11-23 03:53:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:39,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:40,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:40,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154616781] [2021-11-23 03:53:40,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154616781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:40,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:40,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:40,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734743382] [2021-11-23 03:53:40,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:40,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:40,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:40,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:40,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:40,173 INFO L87 Difference]: Start difference. First operand 1974 states and 4450 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:41,958 INFO L93 Difference]: Finished difference Result 2614 states and 5829 transitions. [2021-11-23 03:53:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 03:53:41,958 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-23 03:53:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:41,961 INFO L225 Difference]: With dead ends: 2614 [2021-11-23 03:53:41,961 INFO L226 Difference]: Without dead ends: 2614 [2021-11-23 03:53:41,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=331, Invalid=725, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 03:53:41,963 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 586 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:41,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 22 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 03:53:41,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2021-11-23 03:53:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 1978. [2021-11-23 03:53:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1968 states have (on average 2.2652439024390243) internal successors, (4458), 1977 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 4458 transitions. [2021-11-23 03:53:42,008 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 4458 transitions. Word has length 16 [2021-11-23 03:53:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:42,008 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 4458 transitions. [2021-11-23 03:53:42,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 4458 transitions. [2021-11-23 03:53:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:53:42,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:42,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:42,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 03:53:42,010 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:42,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1456597140, now seen corresponding path program 5 times [2021-11-23 03:53:42,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:42,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605508475] [2021-11-23 03:53:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:42,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:42,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:42,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605508475] [2021-11-23 03:53:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605508475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:42,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:42,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:42,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152167783] [2021-11-23 03:53:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:42,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:42,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:42,234 INFO L87 Difference]: Start difference. First operand 1978 states and 4458 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:44,207 INFO L93 Difference]: Finished difference Result 2650 states and 5911 transitions. [2021-11-23 03:53:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 03:53:44,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-23 03:53:44,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:44,221 INFO L225 Difference]: With dead ends: 2650 [2021-11-23 03:53:44,221 INFO L226 Difference]: Without dead ends: 2650 [2021-11-23 03:53:44,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=748, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 03:53:44,223 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 576 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:44,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 22 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 03:53:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2021-11-23 03:53:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 1978. [2021-11-23 03:53:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1968 states have (on average 2.2652439024390243) internal successors, (4458), 1977 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 4458 transitions. [2021-11-23 03:53:44,270 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 4458 transitions. Word has length 16 [2021-11-23 03:53:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:44,270 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 4458 transitions. [2021-11-23 03:53:44,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 4458 transitions. [2021-11-23 03:53:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:53:44,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:44,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:44,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 03:53:44,272 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:44,273 INFO L85 PathProgramCache]: Analyzing trace with hash 538258010, now seen corresponding path program 6 times [2021-11-23 03:53:44,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:44,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530242612] [2021-11-23 03:53:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:44,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:44,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:44,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530242612] [2021-11-23 03:53:44,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530242612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:44,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:44,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:44,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414589585] [2021-11-23 03:53:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:44,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:44,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:44,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:44,485 INFO L87 Difference]: Start difference. First operand 1978 states and 4458 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:46,651 INFO L93 Difference]: Finished difference Result 2617 states and 5835 transitions. [2021-11-23 03:53:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 03:53:46,652 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-23 03:53:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:46,655 INFO L225 Difference]: With dead ends: 2617 [2021-11-23 03:53:46,655 INFO L226 Difference]: Without dead ends: 2617 [2021-11-23 03:53:46,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=749, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 03:53:46,656 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 602 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:46,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 22 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 03:53:46,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2021-11-23 03:53:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1949. [2021-11-23 03:53:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1939 states have (on average 2.264569365652398) internal successors, (4391), 1948 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 4391 transitions. [2021-11-23 03:53:46,689 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 4391 transitions. Word has length 16 [2021-11-23 03:53:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:46,690 INFO L470 AbstractCegarLoop]: Abstraction has 1949 states and 4391 transitions. [2021-11-23 03:53:46,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 4391 transitions. [2021-11-23 03:53:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:53:46,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:46,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:46,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 03:53:46,691 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1065326767, now seen corresponding path program 1 times [2021-11-23 03:53:46,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:46,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184417352] [2021-11-23 03:53:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:46,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:47,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184417352] [2021-11-23 03:53:47,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184417352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:47,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:47,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:53:47,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213201710] [2021-11-23 03:53:47,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:47,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:53:47,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:53:47,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:53:47,960 INFO L87 Difference]: Start difference. First operand 1949 states and 4391 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:51,704 INFO L93 Difference]: Finished difference Result 3332 states and 7481 transitions. [2021-11-23 03:53:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 03:53:51,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:53:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:51,709 INFO L225 Difference]: With dead ends: 3332 [2021-11-23 03:53:51,709 INFO L226 Difference]: Without dead ends: 3332 [2021-11-23 03:53:51,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 03:53:51,710 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 529 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:51,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 35 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:53:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2021-11-23 03:53:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2156. [2021-11-23 03:53:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2146 states have (on average 2.284249767008388) internal successors, (4902), 2155 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 4902 transitions. [2021-11-23 03:53:51,767 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 4902 transitions. Word has length 17 [2021-11-23 03:53:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:51,768 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 4902 transitions. [2021-11-23 03:53:51,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 4902 transitions. [2021-11-23 03:53:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:53:51,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:51,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:51,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 03:53:51,770 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:51,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1079395807, now seen corresponding path program 2 times [2021-11-23 03:53:51,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:51,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742824227] [2021-11-23 03:53:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:51,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:52,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:52,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742824227] [2021-11-23 03:53:52,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742824227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:52,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:52,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:53:52,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121022979] [2021-11-23 03:53:52,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:52,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:53:52,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:53:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:53:52,923 INFO L87 Difference]: Start difference. First operand 2156 states and 4902 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:59,288 INFO L93 Difference]: Finished difference Result 4913 states and 11152 transitions. [2021-11-23 03:53:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:53:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:53:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:59,295 INFO L225 Difference]: With dead ends: 4913 [2021-11-23 03:53:59,295 INFO L226 Difference]: Without dead ends: 4913 [2021-11-23 03:53:59,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:53:59,297 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 773 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:59,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 24 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 03:53:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2021-11-23 03:53:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 2196. [2021-11-23 03:53:59,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2186 states have (on average 2.294602012808783) internal successors, (5016), 2195 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 5016 transitions. [2021-11-23 03:53:59,365 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 5016 transitions. Word has length 17 [2021-11-23 03:53:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:59,365 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 5016 transitions. [2021-11-23 03:53:59,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:53:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 5016 transitions. [2021-11-23 03:53:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:53:59,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:59,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:59,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 03:53:59,367 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:53:59,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:59,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1918027967, now seen corresponding path program 3 times [2021-11-23 03:53:59,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:59,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784447147] [2021-11-23 03:53:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:59,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:53:59,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:59,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784447147] [2021-11-23 03:53:59,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784447147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:59,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:59,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:53:59,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931520908] [2021-11-23 03:53:59,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:59,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:53:59,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:59,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:53:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:53:59,907 INFO L87 Difference]: Start difference. First operand 2196 states and 5016 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:02,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:02,787 INFO L93 Difference]: Finished difference Result 3681 states and 8405 transitions. [2021-11-23 03:54:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:54:02,787 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:02,792 INFO L225 Difference]: With dead ends: 3681 [2021-11-23 03:54:02,792 INFO L226 Difference]: Without dead ends: 3681 [2021-11-23 03:54:02,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:54:02,793 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 439 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:02,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 35 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 03:54:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-11-23 03:54:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2216. [2021-11-23 03:54:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-23 03:54:02,850 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-23 03:54:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:02,850 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-23 03:54:02,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-23 03:54:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:54:02,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:02,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:02,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 03:54:02,853 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash 303068501, now seen corresponding path program 4 times [2021-11-23 03:54:02,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:02,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772629317] [2021-11-23 03:54:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:02,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:03,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:03,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772629317] [2021-11-23 03:54:03,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772629317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:03,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:03,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:54:03,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950933140] [2021-11-23 03:54:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:03,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:54:03,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:54:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:54:03,816 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:09,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:09,141 INFO L93 Difference]: Finished difference Result 4524 states and 10339 transitions. [2021-11-23 03:54:09,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:54:09,142 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:09,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:09,147 INFO L225 Difference]: With dead ends: 4524 [2021-11-23 03:54:09,147 INFO L226 Difference]: Without dead ends: 4524 [2021-11-23 03:54:09,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=380, Invalid=1260, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 03:54:09,149 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 497 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:09,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 34 Invalid, 3733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 03:54:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2021-11-23 03:54:09,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 2231. [2021-11-23 03:54:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2221 states have (on average 2.295812696983341) internal successors, (5099), 2230 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 5099 transitions. [2021-11-23 03:54:09,212 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 5099 transitions. Word has length 17 [2021-11-23 03:54:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:09,213 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 5099 transitions. [2021-11-23 03:54:09,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 5099 transitions. [2021-11-23 03:54:09,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:54:09,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:09,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:09,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 03:54:09,216 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash -994475021, now seen corresponding path program 5 times [2021-11-23 03:54:09,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:09,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874726117] [2021-11-23 03:54:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:09,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:09,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:09,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874726117] [2021-11-23 03:54:09,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874726117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:09,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:09,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:54:09,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61371511] [2021-11-23 03:54:09,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:09,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:54:09,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:09,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:54:09,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:54:09,709 INFO L87 Difference]: Start difference. First operand 2231 states and 5099 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:12,974 INFO L93 Difference]: Finished difference Result 3653 states and 8364 transitions. [2021-11-23 03:54:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 03:54:12,975 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:12,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:12,980 INFO L225 Difference]: With dead ends: 3653 [2021-11-23 03:54:12,980 INFO L226 Difference]: Without dead ends: 3653 [2021-11-23 03:54:12,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:54:12,995 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 500 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:12,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 35 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:54:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2021-11-23 03:54:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 2216. [2021-11-23 03:54:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-23 03:54:13,034 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-23 03:54:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:13,035 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-23 03:54:13,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-23 03:54:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:54:13,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:13,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:13,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 03:54:13,038 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1015805841, now seen corresponding path program 6 times [2021-11-23 03:54:13,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237388817] [2021-11-23 03:54:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:13,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:13,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:13,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237388817] [2021-11-23 03:54:13,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237388817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:13,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:13,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:54:13,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401984085] [2021-11-23 03:54:13,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:13,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:54:13,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:13,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:54:13,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:54:13,488 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:17,052 INFO L93 Difference]: Finished difference Result 3508 states and 8025 transitions. [2021-11-23 03:54:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-23 03:54:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:17,057 INFO L225 Difference]: With dead ends: 3508 [2021-11-23 03:54:17,057 INFO L226 Difference]: Without dead ends: 3508 [2021-11-23 03:54:17,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 03:54:17,058 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 500 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:17,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 35 Invalid, 3026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 03:54:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2021-11-23 03:54:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 2216. [2021-11-23 03:54:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-23 03:54:17,113 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-23 03:54:17,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:17,113 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-23 03:54:17,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-23 03:54:17,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:54:17,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:17,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:17,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 03:54:17,116 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:17,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:17,116 INFO L85 PathProgramCache]: Analyzing trace with hash 89765701, now seen corresponding path program 7 times [2021-11-23 03:54:17,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:17,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083268172] [2021-11-23 03:54:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:17,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:17,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:17,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083268172] [2021-11-23 03:54:17,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083268172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:17,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:17,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:54:17,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586113193] [2021-11-23 03:54:17,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:17,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:54:17,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:17,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:54:17,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:54:17,600 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:21,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:21,925 INFO L93 Difference]: Finished difference Result 3933 states and 8976 transitions. [2021-11-23 03:54:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:54:21,925 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:21,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:21,945 INFO L225 Difference]: With dead ends: 3933 [2021-11-23 03:54:21,945 INFO L226 Difference]: Without dead ends: 3933 [2021-11-23 03:54:21,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=457, Invalid=1265, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:54:21,946 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 605 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:21,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 35 Invalid, 3625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3585 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 03:54:21,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2021-11-23 03:54:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 2238. [2021-11-23 03:54:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-23 03:54:21,990 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-23 03:54:21,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:21,990 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-23 03:54:21,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-23 03:54:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:54:21,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:21,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:21,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 03:54:21,993 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash -44418589, now seen corresponding path program 8 times [2021-11-23 03:54:21,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:21,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184816638] [2021-11-23 03:54:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:21,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:22,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:22,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184816638] [2021-11-23 03:54:22,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184816638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:22,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:22,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:54:22,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016583536] [2021-11-23 03:54:22,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:22,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:54:22,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:54:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:54:22,512 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:27,114 INFO L93 Difference]: Finished difference Result 3295 states and 7487 transitions. [2021-11-23 03:54:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:54:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:27,118 INFO L225 Difference]: With dead ends: 3295 [2021-11-23 03:54:27,118 INFO L226 Difference]: Without dead ends: 3295 [2021-11-23 03:54:27,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 03:54:27,119 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 471 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:27,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 35 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 03:54:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-11-23 03:54:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2238. [2021-11-23 03:54:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-23 03:54:27,158 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-23 03:54:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:27,158 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-23 03:54:27,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-23 03:54:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:54:27,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:27,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:27,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 03:54:27,160 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:27,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:27,160 INFO L85 PathProgramCache]: Analyzing trace with hash -15267123, now seen corresponding path program 9 times [2021-11-23 03:54:27,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:27,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535692] [2021-11-23 03:54:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:27,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:27,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:27,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535692] [2021-11-23 03:54:27,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:27,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:27,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:54:27,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874610545] [2021-11-23 03:54:27,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:27,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:54:27,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:54:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:54:27,610 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:31,096 INFO L93 Difference]: Finished difference Result 3767 states and 8607 transitions. [2021-11-23 03:54:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 03:54:31,096 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:31,100 INFO L225 Difference]: With dead ends: 3767 [2021-11-23 03:54:31,101 INFO L226 Difference]: Without dead ends: 3767 [2021-11-23 03:54:31,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 03:54:31,102 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 542 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:31,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 35 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:54:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-23 03:54:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 2238. [2021-11-23 03:54:31,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:31,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-23 03:54:31,139 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-23 03:54:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:31,140 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-23 03:54:31,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-23 03:54:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:54:31,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:31,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:31,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 03:54:31,142 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:31,142 INFO L85 PathProgramCache]: Analyzing trace with hash -541902951, now seen corresponding path program 10 times [2021-11-23 03:54:31,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:31,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653917591] [2021-11-23 03:54:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:31,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:32,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:32,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653917591] [2021-11-23 03:54:32,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653917591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:32,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:32,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:54:32,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592949706] [2021-11-23 03:54:32,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:32,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:54:32,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:32,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:54:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:54:32,016 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:37,778 INFO L93 Difference]: Finished difference Result 4956 states and 11280 transitions. [2021-11-23 03:54:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 03:54:37,779 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:37,784 INFO L225 Difference]: With dead ends: 4956 [2021-11-23 03:54:37,784 INFO L226 Difference]: Without dead ends: 4956 [2021-11-23 03:54:37,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=446, Invalid=1360, Unknown=0, NotChecked=0, Total=1806 [2021-11-23 03:54:37,785 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 644 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 3165 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:37,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 34 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3165 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 03:54:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2021-11-23 03:54:37,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 2241. [2021-11-23 03:54:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2231 states have (on average 2.292693859255939) internal successors, (5115), 2240 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 5115 transitions. [2021-11-23 03:54:37,829 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 5115 transitions. Word has length 17 [2021-11-23 03:54:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:37,829 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 5115 transitions. [2021-11-23 03:54:37,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 5115 transitions. [2021-11-23 03:54:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:54:37,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:37,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:37,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 03:54:37,831 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1839446473, now seen corresponding path program 11 times [2021-11-23 03:54:37,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:37,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621097337] [2021-11-23 03:54:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:37,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:38,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:38,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621097337] [2021-11-23 03:54:38,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621097337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:38,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:38,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:54:38,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578185614] [2021-11-23 03:54:38,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:38,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:54:38,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:54:38,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:54:38,237 INFO L87 Difference]: Start difference. First operand 2241 states and 5115 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:41,513 INFO L93 Difference]: Finished difference Result 3901 states and 8879 transitions. [2021-11-23 03:54:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 03:54:41,514 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-23 03:54:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:41,519 INFO L225 Difference]: With dead ends: 3901 [2021-11-23 03:54:41,519 INFO L226 Difference]: Without dead ends: 3901 [2021-11-23 03:54:41,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-11-23 03:54:41,520 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 479 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:41,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 35 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 03:54:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-11-23 03:54:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 2147. [2021-11-23 03:54:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2137 states have (on average 2.2826392138511933) internal successors, (4878), 2146 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 4878 transitions. [2021-11-23 03:54:41,567 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 4878 transitions. Word has length 17 [2021-11-23 03:54:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:41,568 INFO L470 AbstractCegarLoop]: Abstraction has 2147 states and 4878 transitions. [2021-11-23 03:54:41,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 4878 transitions. [2021-11-23 03:54:41,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:54:41,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:41,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:41,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 03:54:41,570 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash -306874337, now seen corresponding path program 1 times [2021-11-23 03:54:41,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:41,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156664530] [2021-11-23 03:54:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:41,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:41,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:41,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156664530] [2021-11-23 03:54:41,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156664530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:41,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:41,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:54:41,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91735804] [2021-11-23 03:54:41,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:41,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:54:41,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:41,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:54:41,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:54:41,870 INFO L87 Difference]: Start difference. First operand 2147 states and 4878 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:43,861 INFO L93 Difference]: Finished difference Result 3006 states and 6724 transitions. [2021-11-23 03:54:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:54:43,861 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:54:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:43,864 INFO L225 Difference]: With dead ends: 3006 [2021-11-23 03:54:43,864 INFO L226 Difference]: Without dead ends: 3006 [2021-11-23 03:54:43,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2021-11-23 03:54:43,865 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 398 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:43,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 17 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 03:54:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-23 03:54:43,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2247. [2021-11-23 03:54:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2237 states have (on average 2.282074206526598) internal successors, (5105), 2246 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 5105 transitions. [2021-11-23 03:54:43,898 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 5105 transitions. Word has length 18 [2021-11-23 03:54:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:43,898 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 5105 transitions. [2021-11-23 03:54:43,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 5105 transitions. [2021-11-23 03:54:43,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:54:43,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:43,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:43,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 03:54:43,900 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash -509289767, now seen corresponding path program 2 times [2021-11-23 03:54:43,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:43,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73470603] [2021-11-23 03:54:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:43,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:44,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73470603] [2021-11-23 03:54:44,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73470603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:44,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:44,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:54:44,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166258833] [2021-11-23 03:54:44,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:44,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:54:44,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:54:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:54:44,205 INFO L87 Difference]: Start difference. First operand 2247 states and 5105 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:47,070 INFO L93 Difference]: Finished difference Result 3447 states and 7699 transitions. [2021-11-23 03:54:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 03:54:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:54:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:47,075 INFO L225 Difference]: With dead ends: 3447 [2021-11-23 03:54:47,075 INFO L226 Difference]: Without dead ends: 3447 [2021-11-23 03:54:47,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:54:47,076 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 627 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:47,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 34 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:54:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-11-23 03:54:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2353. [2021-11-23 03:54:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2343 states have (on average 2.2842509603072982) internal successors, (5352), 2352 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 5352 transitions. [2021-11-23 03:54:47,110 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 5352 transitions. Word has length 18 [2021-11-23 03:54:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:47,110 INFO L470 AbstractCegarLoop]: Abstraction has 2353 states and 5352 transitions. [2021-11-23 03:54:47,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 5352 transitions. [2021-11-23 03:54:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:54:47,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:47,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:47,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-23 03:54:47,112 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:47,113 INFO L85 PathProgramCache]: Analyzing trace with hash -256155843, now seen corresponding path program 3 times [2021-11-23 03:54:47,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:47,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194427902] [2021-11-23 03:54:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:47,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:47,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:47,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194427902] [2021-11-23 03:54:47,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194427902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:47,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:47,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:54:47,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621694582] [2021-11-23 03:54:47,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:47,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:54:47,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:54:47,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:54:47,378 INFO L87 Difference]: Start difference. First operand 2353 states and 5352 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:49,363 INFO L93 Difference]: Finished difference Result 3370 states and 7516 transitions. [2021-11-23 03:54:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 03:54:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:54:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:49,368 INFO L225 Difference]: With dead ends: 3370 [2021-11-23 03:54:49,368 INFO L226 Difference]: Without dead ends: 3370 [2021-11-23 03:54:49,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2021-11-23 03:54:49,369 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 939 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:49,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 17 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 03:54:49,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-11-23 03:54:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 2273. [2021-11-23 03:54:49,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2263 states have (on average 2.280159080866107) internal successors, (5160), 2272 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 5160 transitions. [2021-11-23 03:54:49,402 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 5160 transitions. Word has length 18 [2021-11-23 03:54:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:49,403 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 5160 transitions. [2021-11-23 03:54:49,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 5160 transitions. [2021-11-23 03:54:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:54:49,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:49,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:49,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-23 03:54:49,405 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:49,405 INFO L85 PathProgramCache]: Analyzing trace with hash -458571273, now seen corresponding path program 4 times [2021-11-23 03:54:49,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:49,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418082627] [2021-11-23 03:54:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:49,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:49,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:49,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418082627] [2021-11-23 03:54:49,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418082627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:49,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:49,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:54:49,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964627572] [2021-11-23 03:54:49,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:49,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:54:49,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:54:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:54:49,720 INFO L87 Difference]: Start difference. First operand 2273 states and 5160 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:52,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:52,788 INFO L93 Difference]: Finished difference Result 3517 states and 7849 transitions. [2021-11-23 03:54:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-23 03:54:52,788 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:54:52,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:52,792 INFO L225 Difference]: With dead ends: 3517 [2021-11-23 03:54:52,792 INFO L226 Difference]: Without dead ends: 3517 [2021-11-23 03:54:52,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=666, Invalid=1590, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 03:54:52,793 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 827 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:52,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 34 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:54:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-23 03:54:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2245. [2021-11-23 03:54:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2245 states, 2235 states have (on average 2.280089485458613) internal successors, (5096), 2244 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 5096 transitions. [2021-11-23 03:54:52,829 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 5096 transitions. Word has length 18 [2021-11-23 03:54:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:52,829 INFO L470 AbstractCegarLoop]: Abstraction has 2245 states and 5096 transitions. [2021-11-23 03:54:52,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:52,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 5096 transitions. [2021-11-23 03:54:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:54:52,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:52,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:52,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-23 03:54:52,831 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:52,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1151511107, now seen corresponding path program 5 times [2021-11-23 03:54:52,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:52,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791561650] [2021-11-23 03:54:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:52,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:53,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791561650] [2021-11-23 03:54:53,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791561650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:53,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:53,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:54:53,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746664566] [2021-11-23 03:54:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:53,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:54:53,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:53,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:54:53,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:54:53,117 INFO L87 Difference]: Start difference. First operand 2245 states and 5096 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:56,561 INFO L93 Difference]: Finished difference Result 3407 states and 7609 transitions. [2021-11-23 03:54:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 03:54:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:54:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:56,566 INFO L225 Difference]: With dead ends: 3407 [2021-11-23 03:54:56,566 INFO L226 Difference]: Without dead ends: 3407 [2021-11-23 03:54:56,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=698, Invalid=1654, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 03:54:56,568 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 944 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:56,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 34 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 03:54:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2021-11-23 03:54:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 2229. [2021-11-23 03:54:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2219 states have (on average 2.280757097791798) internal successors, (5061), 2228 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 5061 transitions. [2021-11-23 03:54:56,605 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 5061 transitions. Word has length 18 [2021-11-23 03:54:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:56,606 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 5061 transitions. [2021-11-23 03:54:56,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:54:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 5061 transitions. [2021-11-23 03:54:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:54:56,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:56,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:54:56,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-23 03:54:56,608 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:54:56,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1322906576, now seen corresponding path program 1 times [2021-11-23 03:54:56,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:56,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546130604] [2021-11-23 03:54:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:56,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:56,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:56,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546130604] [2021-11-23 03:54:56,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546130604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:56,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:56,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:54:56,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364701058] [2021-11-23 03:54:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:56,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:54:56,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:56,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:54:56,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:54:56,877 INFO L87 Difference]: Start difference. First operand 2229 states and 5061 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:00,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:00,021 INFO L93 Difference]: Finished difference Result 4440 states and 10020 transitions. [2021-11-23 03:55:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:55:00,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:00,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:00,026 INFO L225 Difference]: With dead ends: 4440 [2021-11-23 03:55:00,026 INFO L226 Difference]: Without dead ends: 4440 [2021-11-23 03:55:00,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:55:00,027 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 523 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 3654 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:00,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 54 Invalid, 3694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3654 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 03:55:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2021-11-23 03:55:00,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 2524. [2021-11-23 03:55:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2514 states have (on average 2.290373906125696) internal successors, (5758), 2523 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 5758 transitions. [2021-11-23 03:55:00,064 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 5758 transitions. Word has length 18 [2021-11-23 03:55:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:00,064 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 5758 transitions. [2021-11-23 03:55:00,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 5758 transitions. [2021-11-23 03:55:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:00,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:00,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:00,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-23 03:55:00,066 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:00,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:00,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1295237775, now seen corresponding path program 6 times [2021-11-23 03:55:00,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:00,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488951806] [2021-11-23 03:55:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:00,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:00,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:00,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488951806] [2021-11-23 03:55:00,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488951806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:00,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:00,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:55:00,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155373739] [2021-11-23 03:55:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:00,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:55:00,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:55:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:55:00,310 INFO L87 Difference]: Start difference. First operand 2524 states and 5758 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:02,816 INFO L93 Difference]: Finished difference Result 3071 states and 6923 transitions. [2021-11-23 03:55:02,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:55:02,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:02,822 INFO L225 Difference]: With dead ends: 3071 [2021-11-23 03:55:02,822 INFO L226 Difference]: Without dead ends: 3071 [2021-11-23 03:55:02,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:55:02,823 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 622 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:02,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 16 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:55:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2021-11-23 03:55:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 2558. [2021-11-23 03:55:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2548 states have (on average 2.2892464678178963) internal successors, (5833), 2557 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:02,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 5833 transitions. [2021-11-23 03:55:02,874 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 5833 transitions. Word has length 18 [2021-11-23 03:55:02,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:02,874 INFO L470 AbstractCegarLoop]: Abstraction has 2558 states and 5833 transitions. [2021-11-23 03:55:02,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 5833 transitions. [2021-11-23 03:55:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:02,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:02,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:02,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-23 03:55:02,877 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1497653205, now seen corresponding path program 7 times [2021-11-23 03:55:02,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:02,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610067431] [2021-11-23 03:55:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:02,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:03,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610067431] [2021-11-23 03:55:03,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610067431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:03,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:03,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:55:03,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656887152] [2021-11-23 03:55:03,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:03,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:55:03,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:03,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:55:03,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:55:03,161 INFO L87 Difference]: Start difference. First operand 2558 states and 5833 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:06,617 INFO L93 Difference]: Finished difference Result 3233 states and 7274 transitions. [2021-11-23 03:55:06,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 03:55:06,618 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:06,622 INFO L225 Difference]: With dead ends: 3233 [2021-11-23 03:55:06,622 INFO L226 Difference]: Without dead ends: 3233 [2021-11-23 03:55:06,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 03:55:06,623 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 622 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 4250 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:06,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 32 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4250 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 03:55:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2021-11-23 03:55:06,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 2514. [2021-11-23 03:55:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 2504 states have (on average 2.2895367412140577) internal successors, (5733), 2513 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 5733 transitions. [2021-11-23 03:55:06,697 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 5733 transitions. Word has length 18 [2021-11-23 03:55:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:06,697 INFO L470 AbstractCegarLoop]: Abstraction has 2514 states and 5733 transitions. [2021-11-23 03:55:06,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 5733 transitions. [2021-11-23 03:55:06,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:06,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:06,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:06,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-23 03:55:06,700 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2104374257, now seen corresponding path program 8 times [2021-11-23 03:55:06,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:06,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490349398] [2021-11-23 03:55:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:06,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:06,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:06,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490349398] [2021-11-23 03:55:06,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490349398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:06,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:06,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:55:06,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876926731] [2021-11-23 03:55:06,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:06,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:55:06,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:06,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:55:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:55:06,947 INFO L87 Difference]: Start difference. First operand 2514 states and 5733 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:09,974 INFO L93 Difference]: Finished difference Result 3260 states and 7339 transitions. [2021-11-23 03:55:09,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 03:55:09,975 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:09,978 INFO L225 Difference]: With dead ends: 3260 [2021-11-23 03:55:09,978 INFO L226 Difference]: Without dead ends: 3260 [2021-11-23 03:55:09,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=504, Invalid=1752, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 03:55:09,980 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 818 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 3141 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:09,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 32 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3141 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:55:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-11-23 03:55:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 2503. [2021-11-23 03:55:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2493 states have (on average 2.2904131568391497) internal successors, (5710), 2502 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 5710 transitions. [2021-11-23 03:55:10,013 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 5710 transitions. Word has length 18 [2021-11-23 03:55:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:10,014 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 5710 transitions. [2021-11-23 03:55:10,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 5710 transitions. [2021-11-23 03:55:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:10,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:10,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:10,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-23 03:55:10,016 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1786150869, now seen corresponding path program 9 times [2021-11-23 03:55:10,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:10,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543945784] [2021-11-23 03:55:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:10,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:10,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:10,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543945784] [2021-11-23 03:55:10,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543945784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:10,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:10,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:55:10,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160740817] [2021-11-23 03:55:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:10,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:55:10,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:55:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:55:10,266 INFO L87 Difference]: Start difference. First operand 2503 states and 5710 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:12,467 INFO L93 Difference]: Finished difference Result 3045 states and 6869 transitions. [2021-11-23 03:55:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:55:12,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:12,471 INFO L225 Difference]: With dead ends: 3045 [2021-11-23 03:55:12,471 INFO L226 Difference]: Without dead ends: 3045 [2021-11-23 03:55:12,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:55:12,472 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 535 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:12,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 16 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 03:55:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-11-23 03:55:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2527. [2021-11-23 03:55:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2517 states have (on average 2.2888359157727454) internal successors, (5761), 2526 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 5761 transitions. [2021-11-23 03:55:12,505 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 5761 transitions. Word has length 18 [2021-11-23 03:55:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:12,505 INFO L470 AbstractCegarLoop]: Abstraction has 2527 states and 5761 transitions. [2021-11-23 03:55:12,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:12,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 5761 transitions. [2021-11-23 03:55:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:12,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:12,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:12,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-23 03:55:12,506 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:12,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1988566299, now seen corresponding path program 10 times [2021-11-23 03:55:12,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:12,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619349887] [2021-11-23 03:55:12,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:12,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:12,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:12,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619349887] [2021-11-23 03:55:12,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619349887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:12,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:12,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:55:12,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582070420] [2021-11-23 03:55:12,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:12,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:55:12,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:55:12,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:55:12,778 INFO L87 Difference]: Start difference. First operand 2527 states and 5761 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:16,300 INFO L93 Difference]: Finished difference Result 3238 states and 7284 transitions. [2021-11-23 03:55:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 03:55:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:16,305 INFO L225 Difference]: With dead ends: 3238 [2021-11-23 03:55:16,305 INFO L226 Difference]: Without dead ends: 3238 [2021-11-23 03:55:16,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=524, Invalid=1368, Unknown=0, NotChecked=0, Total=1892 [2021-11-23 03:55:16,306 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 626 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 4018 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:16,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 32 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4018 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 03:55:16,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2021-11-23 03:55:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 2521. [2021-11-23 03:55:16,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2511 states have (on average 2.2891278375149344) internal successors, (5748), 2520 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 5748 transitions. [2021-11-23 03:55:16,367 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 5748 transitions. Word has length 18 [2021-11-23 03:55:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:16,367 INFO L470 AbstractCegarLoop]: Abstraction has 2521 states and 5748 transitions. [2021-11-23 03:55:16,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 5748 transitions. [2021-11-23 03:55:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:16,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:16,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:16,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-23 03:55:16,369 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:16,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:16,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1613461163, now seen corresponding path program 11 times [2021-11-23 03:55:16,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:16,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364608445] [2021-11-23 03:55:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:16,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:16,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:16,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364608445] [2021-11-23 03:55:16,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364608445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:16,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:16,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:55:16,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521985640] [2021-11-23 03:55:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:16,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:55:16,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:55:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:55:16,581 INFO L87 Difference]: Start difference. First operand 2521 states and 5748 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:20,072 INFO L93 Difference]: Finished difference Result 3300 states and 7422 transitions. [2021-11-23 03:55:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-23 03:55:20,073 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:20,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:20,077 INFO L225 Difference]: With dead ends: 3300 [2021-11-23 03:55:20,077 INFO L226 Difference]: Without dead ends: 3300 [2021-11-23 03:55:20,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=540, Invalid=1352, Unknown=0, NotChecked=0, Total=1892 [2021-11-23 03:55:20,078 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 615 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:20,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 32 Invalid, 4121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:55:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2021-11-23 03:55:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2520. [2021-11-23 03:55:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2510 states have (on average 2.289243027888446) internal successors, (5746), 2519 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 5746 transitions. [2021-11-23 03:55:20,121 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 5746 transitions. Word has length 18 [2021-11-23 03:55:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:20,121 INFO L470 AbstractCegarLoop]: Abstraction has 2520 states and 5746 transitions. [2021-11-23 03:55:20,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 5746 transitions. [2021-11-23 03:55:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:20,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:20,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:20,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-23 03:55:20,124 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:20,124 INFO L85 PathProgramCache]: Analyzing trace with hash -441864539, now seen corresponding path program 12 times [2021-11-23 03:55:20,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:20,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411273479] [2021-11-23 03:55:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:20,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:20,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411273479] [2021-11-23 03:55:20,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411273479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:20,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:20,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:55:20,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474926118] [2021-11-23 03:55:20,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:20,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:55:20,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:20,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:55:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:55:20,354 INFO L87 Difference]: Start difference. First operand 2520 states and 5746 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:24,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:24,021 INFO L93 Difference]: Finished difference Result 3322 states and 7469 transitions. [2021-11-23 03:55:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-23 03:55:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:24,027 INFO L225 Difference]: With dead ends: 3322 [2021-11-23 03:55:24,027 INFO L226 Difference]: Without dead ends: 3322 [2021-11-23 03:55:24,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=618, Invalid=1452, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 03:55:24,028 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 773 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:24,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 32 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 03:55:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2021-11-23 03:55:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 2524. [2021-11-23 03:55:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2514 states have (on average 2.288782816229117) internal successors, (5754), 2523 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 5754 transitions. [2021-11-23 03:55:24,081 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 5754 transitions. Word has length 18 [2021-11-23 03:55:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:24,081 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 5754 transitions. [2021-11-23 03:55:24,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 5754 transitions. [2021-11-23 03:55:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:24,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:24,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:24,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-23 03:55:24,083 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:24,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1800629701, now seen corresponding path program 13 times [2021-11-23 03:55:24,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:24,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966387248] [2021-11-23 03:55:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:24,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:24,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:24,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966387248] [2021-11-23 03:55:24,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966387248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:24,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:24,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:55:24,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560083443] [2021-11-23 03:55:24,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:24,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:55:24,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:55:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:55:24,353 INFO L87 Difference]: Start difference. First operand 2524 states and 5754 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:28,962 INFO L93 Difference]: Finished difference Result 3411 states and 7663 transitions. [2021-11-23 03:55:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 03:55:28,963 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:28,967 INFO L225 Difference]: With dead ends: 3411 [2021-11-23 03:55:28,967 INFO L226 Difference]: Without dead ends: 3411 [2021-11-23 03:55:28,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=688, Invalid=1664, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 03:55:28,968 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 687 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 4924 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:28,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 32 Invalid, 4962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4924 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 03:55:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-11-23 03:55:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2517. [2021-11-23 03:55:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2507 states have (on average 2.289190267251695) internal successors, (5739), 2516 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 5739 transitions. [2021-11-23 03:55:29,006 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 5739 transitions. Word has length 18 [2021-11-23 03:55:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:29,006 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 5739 transitions. [2021-11-23 03:55:29,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 5739 transitions. [2021-11-23 03:55:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:29,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:29,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:29,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-23 03:55:29,007 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash -370481977, now seen corresponding path program 14 times [2021-11-23 03:55:29,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:29,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061671738] [2021-11-23 03:55:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:29,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:29,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:29,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061671738] [2021-11-23 03:55:29,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061671738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:29,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:29,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:55:29,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393516546] [2021-11-23 03:55:29,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:29,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:55:29,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:29,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:55:29,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:55:29,265 INFO L87 Difference]: Start difference. First operand 2517 states and 5739 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:32,211 INFO L93 Difference]: Finished difference Result 3109 states and 7007 transitions. [2021-11-23 03:55:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 03:55:32,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:32,217 INFO L225 Difference]: With dead ends: 3109 [2021-11-23 03:55:32,217 INFO L226 Difference]: Without dead ends: 3109 [2021-11-23 03:55:32,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:55:32,218 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 510 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:32,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 16 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 03:55:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-11-23 03:55:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2540. [2021-11-23 03:55:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2530 states have (on average 2.2889328063241106) internal successors, (5791), 2539 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 5791 transitions. [2021-11-23 03:55:32,272 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 5791 transitions. Word has length 18 [2021-11-23 03:55:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:32,272 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 5791 transitions. [2021-11-23 03:55:32,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 5791 transitions. [2021-11-23 03:55:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:32,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:32,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:32,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-23 03:55:32,274 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:32,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash -572897407, now seen corresponding path program 15 times [2021-11-23 03:55:32,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:32,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143650070] [2021-11-23 03:55:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:32,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:32,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:32,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143650070] [2021-11-23 03:55:32,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143650070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:32,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:32,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:55:32,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688678260] [2021-11-23 03:55:32,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:32,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:55:32,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:55:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:55:32,585 INFO L87 Difference]: Start difference. First operand 2540 states and 5791 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:36,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:36,193 INFO L93 Difference]: Finished difference Result 3340 states and 7500 transitions. [2021-11-23 03:55:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:55:36,194 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:36,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:36,198 INFO L225 Difference]: With dead ends: 3340 [2021-11-23 03:55:36,198 INFO L226 Difference]: Without dead ends: 3340 [2021-11-23 03:55:36,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=490, Invalid=1232, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:55:36,199 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 635 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:36,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 32 Invalid, 3433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3383 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 03:55:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2021-11-23 03:55:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 2518. [2021-11-23 03:55:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2508 states have (on average 2.2890749601275915) internal successors, (5741), 2517 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 5741 transitions. [2021-11-23 03:55:36,236 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 5741 transitions. Word has length 18 [2021-11-23 03:55:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:36,237 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 5741 transitions. [2021-11-23 03:55:36,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 5741 transitions. [2021-11-23 03:55:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:36,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:36,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:36,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-23 03:55:36,238 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1265837241, now seen corresponding path program 16 times [2021-11-23 03:55:36,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:36,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385670321] [2021-11-23 03:55:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:36,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:36,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:36,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385670321] [2021-11-23 03:55:36,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385670321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:36,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:36,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:55:36,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194310126] [2021-11-23 03:55:36,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:36,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:55:36,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:36,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:55:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:55:36,522 INFO L87 Difference]: Start difference. First operand 2518 states and 5741 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:40,450 INFO L93 Difference]: Finished difference Result 3367 states and 7565 transitions. [2021-11-23 03:55:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:55:40,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:40,454 INFO L225 Difference]: With dead ends: 3367 [2021-11-23 03:55:40,454 INFO L226 Difference]: Without dead ends: 3367 [2021-11-23 03:55:40,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=505, Invalid=1217, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:55:40,455 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 606 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:40,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 32 Invalid, 3911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 03:55:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2021-11-23 03:55:40,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 2509. [2021-11-23 03:55:40,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2499 states have (on average 2.289715886354542) internal successors, (5722), 2508 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 5722 transitions. [2021-11-23 03:55:40,497 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 5722 transitions. Word has length 18 [2021-11-23 03:55:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:40,498 INFO L470 AbstractCegarLoop]: Abstraction has 2509 states and 5722 transitions. [2021-11-23 03:55:40,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 5722 transitions. [2021-11-23 03:55:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:40,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:40,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:40,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-23 03:55:40,499 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:40,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:40,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1868877069, now seen corresponding path program 17 times [2021-11-23 03:55:40,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:40,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377043221] [2021-11-23 03:55:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:40,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:40,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:40,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377043221] [2021-11-23 03:55:40,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377043221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:40,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:40,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:55:40,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94862865] [2021-11-23 03:55:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:40,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:55:40,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:40,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:55:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:55:40,760 INFO L87 Difference]: Start difference. First operand 2509 states and 5722 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:43,033 INFO L93 Difference]: Finished difference Result 3090 states and 6956 transitions. [2021-11-23 03:55:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 03:55:43,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:43,038 INFO L225 Difference]: With dead ends: 3090 [2021-11-23 03:55:43,038 INFO L226 Difference]: Without dead ends: 3090 [2021-11-23 03:55:43,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:55:43,038 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 595 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:43,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 16 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:55:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-23 03:55:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2502. [2021-11-23 03:55:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2492 states have (on average 2.289325842696629) internal successors, (5705), 2501 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 5705 transitions. [2021-11-23 03:55:43,081 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 5705 transitions. Word has length 18 [2021-11-23 03:55:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:43,082 INFO L470 AbstractCegarLoop]: Abstraction has 2502 states and 5705 transitions. [2021-11-23 03:55:43,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 5705 transitions. [2021-11-23 03:55:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:43,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:43,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:43,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-23 03:55:43,084 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:43,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1666461639, now seen corresponding path program 18 times [2021-11-23 03:55:43,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:43,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462690597] [2021-11-23 03:55:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:43,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:43,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:43,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462690597] [2021-11-23 03:55:43,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462690597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:43,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:43,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:55:43,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559520325] [2021-11-23 03:55:43,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:43,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:55:43,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:55:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:55:43,351 INFO L87 Difference]: Start difference. First operand 2502 states and 5705 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:46,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:46,491 INFO L93 Difference]: Finished difference Result 3362 states and 7546 transitions. [2021-11-23 03:55:46,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:55:46,492 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:46,496 INFO L225 Difference]: With dead ends: 3362 [2021-11-23 03:55:46,496 INFO L226 Difference]: Without dead ends: 3362 [2021-11-23 03:55:46,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:55:46,497 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 693 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:46,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 32 Invalid, 3024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:55:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2021-11-23 03:55:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 2469. [2021-11-23 03:55:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2459 states have (on average 2.2895485969906466) internal successors, (5630), 2468 states have internal predecessors, (5630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 5630 transitions. [2021-11-23 03:55:46,537 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 5630 transitions. Word has length 18 [2021-11-23 03:55:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:46,537 INFO L470 AbstractCegarLoop]: Abstraction has 2469 states and 5630 transitions. [2021-11-23 03:55:46,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 5630 transitions. [2021-11-23 03:55:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:55:46,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:46,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:46,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-23 03:55:46,538 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:46,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash 973521805, now seen corresponding path program 19 times [2021-11-23 03:55:46,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:46,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336194349] [2021-11-23 03:55:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:46,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:46,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:46,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336194349] [2021-11-23 03:55:46,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336194349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:46,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:46,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:55:46,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904835217] [2021-11-23 03:55:46,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:46,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 03:55:46,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:46,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 03:55:46,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:55:46,790 INFO L87 Difference]: Start difference. First operand 2469 states and 5630 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:49,762 INFO L93 Difference]: Finished difference Result 3311 states and 7435 transitions. [2021-11-23 03:55:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:55:49,763 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-23 03:55:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:49,767 INFO L225 Difference]: With dead ends: 3311 [2021-11-23 03:55:49,767 INFO L226 Difference]: Without dead ends: 3311 [2021-11-23 03:55:49,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=504, Invalid=1218, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:55:49,768 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 706 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:49,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 32 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 03:55:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-11-23 03:55:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2459. [2021-11-23 03:55:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2449 states have (on average 2.2903225806451615) internal successors, (5609), 2458 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 5609 transitions. [2021-11-23 03:55:49,816 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 5609 transitions. Word has length 18 [2021-11-23 03:55:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:49,816 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 5609 transitions. [2021-11-23 03:55:49,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 5609 transitions. [2021-11-23 03:55:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:55:49,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:49,817 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] [2021-11-23 03:55:49,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-23 03:55:49,817 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash -66502804, now seen corresponding path program 1 times [2021-11-23 03:55:49,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:49,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946806524] [2021-11-23 03:55:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:49,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:50,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:50,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946806524] [2021-11-23 03:55:50,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946806524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:50,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:50,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:55:50,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786849125] [2021-11-23 03:55:50,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:50,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:55:50,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:55:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:55:50,208 INFO L87 Difference]: Start difference. First operand 2459 states and 5609 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:54,380 INFO L93 Difference]: Finished difference Result 5464 states and 12399 transitions. [2021-11-23 03:55:54,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 03:55:54,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:55:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:54,389 INFO L225 Difference]: With dead ends: 5464 [2021-11-23 03:55:54,390 INFO L226 Difference]: Without dead ends: 5464 [2021-11-23 03:55:54,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=663, Invalid=1689, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 03:55:54,390 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 924 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3636 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:54,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 34 Invalid, 3765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3636 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 03:55:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2021-11-23 03:55:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 2753. [2021-11-23 03:55:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2743 states have (on average 2.3117025154939848) internal successors, (6341), 2752 states have internal predecessors, (6341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 6341 transitions. [2021-11-23 03:55:54,446 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 6341 transitions. Word has length 20 [2021-11-23 03:55:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:54,446 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 6341 transitions. [2021-11-23 03:55:54,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:55:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 6341 transitions. [2021-11-23 03:55:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:55:54,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:54,448 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] [2021-11-23 03:55:54,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-23 03:55:54,448 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:55:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:54,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1810355950, now seen corresponding path program 1 times [2021-11-23 03:55:54,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:54,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085285404] [2021-11-23 03:55:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:54,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:56,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:56,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085285404] [2021-11-23 03:55:56,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085285404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:56,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:56,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 03:55:56,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719561742] [2021-11-23 03:55:56,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:56,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:55:56,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:55:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:55:56,823 INFO L87 Difference]: Start difference. First operand 2753 states and 6341 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:05,012 INFO L93 Difference]: Finished difference Result 4191 states and 9520 transitions. [2021-11-23 03:56:05,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:56:05,013 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:05,019 INFO L225 Difference]: With dead ends: 4191 [2021-11-23 03:56:05,019 INFO L226 Difference]: Without dead ends: 4191 [2021-11-23 03:56:05,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=323, Invalid=1483, Unknown=0, NotChecked=0, Total=1806 [2021-11-23 03:56:05,020 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 667 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:05,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 24 Invalid, 4572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:56:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2021-11-23 03:56:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 2901. [2021-11-23 03:56:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2891 states have (on average 2.3220338983050848) internal successors, (6713), 2900 states have internal predecessors, (6713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 6713 transitions. [2021-11-23 03:56:05,076 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 6713 transitions. Word has length 20 [2021-11-23 03:56:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:05,077 INFO L470 AbstractCegarLoop]: Abstraction has 2901 states and 6713 transitions. [2021-11-23 03:56:05,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 6713 transitions. [2021-11-23 03:56:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:05,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:05,079 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] [2021-11-23 03:56:05,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-23 03:56:05,080 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1778596980, now seen corresponding path program 2 times [2021-11-23 03:56:05,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:05,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204702855] [2021-11-23 03:56:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:05,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:06,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:06,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204702855] [2021-11-23 03:56:06,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204702855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:06,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:06,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:56:06,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672108490] [2021-11-23 03:56:06,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:06,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:56:06,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:56:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:56:06,803 INFO L87 Difference]: Start difference. First operand 2901 states and 6713 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:13,077 INFO L93 Difference]: Finished difference Result 4081 states and 9320 transitions. [2021-11-23 03:56:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 03:56:13,078 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:13,083 INFO L225 Difference]: With dead ends: 4081 [2021-11-23 03:56:13,083 INFO L226 Difference]: Without dead ends: 4081 [2021-11-23 03:56:13,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 03:56:13,084 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 702 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 3516 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:13,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 24 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3516 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 03:56:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-11-23 03:56:13,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 2914. [2021-11-23 03:56:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2904 states have (on average 2.3209366391184574) internal successors, (6740), 2913 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 6740 transitions. [2021-11-23 03:56:13,128 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 6740 transitions. Word has length 20 [2021-11-23 03:56:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:13,128 INFO L470 AbstractCegarLoop]: Abstraction has 2914 states and 6740 transitions. [2021-11-23 03:56:13,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 6740 transitions. [2021-11-23 03:56:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:13,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:13,131 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] [2021-11-23 03:56:13,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-23 03:56:13,132 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1429329674, now seen corresponding path program 2 times [2021-11-23 03:56:13,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:13,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383214035] [2021-11-23 03:56:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:13,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:13,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:13,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383214035] [2021-11-23 03:56:13,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383214035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:13,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:13,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:56:13,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557511535] [2021-11-23 03:56:13,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:13,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:56:13,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:13,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:56:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:56:13,499 INFO L87 Difference]: Start difference. First operand 2914 states and 6740 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:17,858 INFO L93 Difference]: Finished difference Result 7182 states and 16436 transitions. [2021-11-23 03:56:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 03:56:17,858 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:17,869 INFO L225 Difference]: With dead ends: 7182 [2021-11-23 03:56:17,869 INFO L226 Difference]: Without dead ends: 7182 [2021-11-23 03:56:17,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=825, Invalid=2145, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 03:56:17,870 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1252 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:17,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 34 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 3064 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:56:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7182 states. [2021-11-23 03:56:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7182 to 3199. [2021-11-23 03:56:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 3189 states have (on average 2.3361555346503606) internal successors, (7450), 3198 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 7450 transitions. [2021-11-23 03:56:17,942 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 7450 transitions. Word has length 20 [2021-11-23 03:56:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:17,942 INFO L470 AbstractCegarLoop]: Abstraction has 3199 states and 7450 transitions. [2021-11-23 03:56:17,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 7450 transitions. [2021-11-23 03:56:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:17,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:17,945 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] [2021-11-23 03:56:17,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-23 03:56:17,945 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:17,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1341948864, now seen corresponding path program 3 times [2021-11-23 03:56:17,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:17,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922349482] [2021-11-23 03:56:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:17,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:18,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:18,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922349482] [2021-11-23 03:56:18,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922349482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:18,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:18,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:56:18,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136714096] [2021-11-23 03:56:18,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:18,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:56:18,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:56:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:56:18,303 INFO L87 Difference]: Start difference. First operand 3199 states and 7450 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:22,710 INFO L93 Difference]: Finished difference Result 7664 states and 17657 transitions. [2021-11-23 03:56:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 03:56:22,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:22,724 INFO L225 Difference]: With dead ends: 7664 [2021-11-23 03:56:22,724 INFO L226 Difference]: Without dead ends: 7664 [2021-11-23 03:56:22,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=866, Invalid=2104, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 03:56:22,725 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1428 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:22,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 34 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 03:56:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2021-11-23 03:56:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 2906. [2021-11-23 03:56:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2896 states have (on average 2.320441988950276) internal successors, (6720), 2905 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 6720 transitions. [2021-11-23 03:56:22,801 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 6720 transitions. Word has length 20 [2021-11-23 03:56:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:22,801 INFO L470 AbstractCegarLoop]: Abstraction has 2906 states and 6720 transitions. [2021-11-23 03:56:22,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 6720 transitions. [2021-11-23 03:56:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:22,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:22,804 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] [2021-11-23 03:56:22,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-23 03:56:22,804 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1515230971, now seen corresponding path program 1 times [2021-11-23 03:56:22,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:22,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669483956] [2021-11-23 03:56:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:22,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:23,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:23,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669483956] [2021-11-23 03:56:23,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669483956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:23,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:23,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 03:56:23,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374912010] [2021-11-23 03:56:23,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:23,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:56:23,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:23,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:56:23,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:56:23,053 INFO L87 Difference]: Start difference. First operand 2906 states and 6720 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:27,190 INFO L93 Difference]: Finished difference Result 12443 states and 28036 transitions. [2021-11-23 03:56:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:56:27,191 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:27,242 INFO L225 Difference]: With dead ends: 12443 [2021-11-23 03:56:27,242 INFO L226 Difference]: Without dead ends: 12403 [2021-11-23 03:56:27,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=484, Invalid=1322, Unknown=0, NotChecked=0, Total=1806 [2021-11-23 03:56:27,243 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1642 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:27,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 166 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 03:56:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12403 states. [2021-11-23 03:56:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12403 to 3003. [2021-11-23 03:56:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2993 states have (on average 2.317741396592048) internal successors, (6937), 3002 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 6937 transitions. [2021-11-23 03:56:27,390 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 6937 transitions. Word has length 20 [2021-11-23 03:56:27,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:27,391 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 6937 transitions. [2021-11-23 03:56:27,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 6937 transitions. [2021-11-23 03:56:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:27,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:27,394 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] [2021-11-23 03:56:27,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-23 03:56:27,394 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1257557666, now seen corresponding path program 3 times [2021-11-23 03:56:27,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:27,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536165510] [2021-11-23 03:56:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:27,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:29,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:29,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536165510] [2021-11-23 03:56:29,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536165510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:29,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:29,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 03:56:29,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498591644] [2021-11-23 03:56:29,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:29,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:56:29,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:56:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:56:29,408 INFO L87 Difference]: Start difference. First operand 3003 states and 6937 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:39,187 INFO L93 Difference]: Finished difference Result 4202 states and 9607 transitions. [2021-11-23 03:56:39,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 03:56:39,188 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:39,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:39,194 INFO L225 Difference]: With dead ends: 4202 [2021-11-23 03:56:39,194 INFO L226 Difference]: Without dead ends: 4202 [2021-11-23 03:56:39,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=370, Invalid=1792, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 03:56:39,195 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 686 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 6119 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 6119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:39,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 35 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 6119 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 03:56:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-11-23 03:56:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3038. [2021-11-23 03:56:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3028 states have (on average 2.3183619550858654) internal successors, (7020), 3037 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 7020 transitions. [2021-11-23 03:56:39,252 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 7020 transitions. Word has length 20 [2021-11-23 03:56:39,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:39,253 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 7020 transitions. [2021-11-23 03:56:39,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:39,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 7020 transitions. [2021-11-23 03:56:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:39,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:39,256 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] [2021-11-23 03:56:39,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-23 03:56:39,256 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1225798696, now seen corresponding path program 4 times [2021-11-23 03:56:39,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:39,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349540185] [2021-11-23 03:56:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:39,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:41,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:41,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349540185] [2021-11-23 03:56:41,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349540185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:41,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:41,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:56:41,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748814631] [2021-11-23 03:56:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:41,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:56:41,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:56:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:56:41,130 INFO L87 Difference]: Start difference. First operand 3038 states and 7020 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:49,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:49,878 INFO L93 Difference]: Finished difference Result 4285 states and 9815 transitions. [2021-11-23 03:56:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:56:49,879 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:49,890 INFO L225 Difference]: With dead ends: 4285 [2021-11-23 03:56:49,890 INFO L226 Difference]: Without dead ends: 4285 [2021-11-23 03:56:49,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=356, Invalid=1284, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 03:56:49,891 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 556 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 5553 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 5553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:49,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 34 Invalid, 5591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 5553 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 03:56:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2021-11-23 03:56:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 3003. [2021-11-23 03:56:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2993 states have (on average 2.317741396592048) internal successors, (6937), 3002 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 6937 transitions. [2021-11-23 03:56:49,965 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 6937 transitions. Word has length 20 [2021-11-23 03:56:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:49,965 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 6937 transitions. [2021-11-23 03:56:49,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 6937 transitions. [2021-11-23 03:56:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:49,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:49,968 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] [2021-11-23 03:56:49,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-23 03:56:49,969 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash -695994306, now seen corresponding path program 4 times [2021-11-23 03:56:49,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:49,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333968297] [2021-11-23 03:56:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:49,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:50,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:50,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333968297] [2021-11-23 03:56:50,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333968297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:50,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:50,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:56:50,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118875126] [2021-11-23 03:56:50,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:50,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:56:50,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:50,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:56:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:56:50,289 INFO L87 Difference]: Start difference. First operand 3003 states and 6937 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:54,111 INFO L93 Difference]: Finished difference Result 4492 states and 10268 transitions. [2021-11-23 03:56:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-23 03:56:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:54,124 INFO L225 Difference]: With dead ends: 4492 [2021-11-23 03:56:54,124 INFO L226 Difference]: Without dead ends: 4492 [2021-11-23 03:56:54,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2021-11-23 03:56:54,126 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 883 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 3948 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:54,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 32 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3948 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 03:56:54,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2021-11-23 03:56:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 3040. [2021-11-23 03:56:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3030 states have (on average 2.3165016501650166) internal successors, (7019), 3039 states have internal predecessors, (7019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 7019 transitions. [2021-11-23 03:56:54,212 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 7019 transitions. Word has length 20 [2021-11-23 03:56:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:54,213 INFO L470 AbstractCegarLoop]: Abstraction has 3040 states and 7019 transitions. [2021-11-23 03:56:54,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 7019 transitions. [2021-11-23 03:56:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:54,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:54,216 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] [2021-11-23 03:56:54,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-23 03:56:54,217 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:54,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash 827694452, now seen corresponding path program 5 times [2021-11-23 03:56:54,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:54,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264261208] [2021-11-23 03:56:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:54,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:54,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:54,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264261208] [2021-11-23 03:56:54,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264261208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:54,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:54,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:56:54,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726806048] [2021-11-23 03:56:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:54,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:56:54,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:54,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:56:54,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:56:54,544 INFO L87 Difference]: Start difference. First operand 3040 states and 7019 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:58,326 INFO L93 Difference]: Finished difference Result 4931 states and 11323 transitions. [2021-11-23 03:56:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 03:56:58,326 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:56:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:58,340 INFO L225 Difference]: With dead ends: 4931 [2021-11-23 03:56:58,340 INFO L226 Difference]: Without dead ends: 4931 [2021-11-23 03:56:58,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=456, Invalid=1800, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 03:56:58,342 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 912 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 3988 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:58,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 32 Invalid, 4041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3988 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 03:56:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2021-11-23 03:56:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 3039. [2021-11-23 03:56:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 3029 states have (on average 2.3169362826015187) internal successors, (7018), 3038 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 7018 transitions. [2021-11-23 03:56:58,430 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 7018 transitions. Word has length 20 [2021-11-23 03:56:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:58,430 INFO L470 AbstractCegarLoop]: Abstraction has 3039 states and 7018 transitions. [2021-11-23 03:56:58,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:56:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 7018 transitions. [2021-11-23 03:56:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:56:58,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:58,434 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] [2021-11-23 03:56:58,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-23 03:56:58,434 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:56:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash 654412345, now seen corresponding path program 2 times [2021-11-23 03:56:58,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:58,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771557706] [2021-11-23 03:56:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:58,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:58,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:58,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771557706] [2021-11-23 03:56:58,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771557706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:58,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:58,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:56:58,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95070214] [2021-11-23 03:56:58,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:58,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:56:58,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:56:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:56:58,702 INFO L87 Difference]: Start difference. First operand 3039 states and 7018 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:03,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:03,070 INFO L93 Difference]: Finished difference Result 9504 states and 21443 transitions. [2021-11-23 03:57:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:57:03,072 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:03,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:03,093 INFO L225 Difference]: With dead ends: 9504 [2021-11-23 03:57:03,093 INFO L226 Difference]: Without dead ends: 9468 [2021-11-23 03:57:03,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=425, Invalid=1135, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:57:03,094 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 1149 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 4109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:03,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 193 Invalid, 4109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 03:57:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9468 states. [2021-11-23 03:57:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9468 to 2958. [2021-11-23 03:57:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2948 states have (on average 2.3181818181818183) internal successors, (6834), 2957 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 6834 transitions. [2021-11-23 03:57:03,216 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 6834 transitions. Word has length 20 [2021-11-23 03:57:03,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:03,216 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 6834 transitions. [2021-11-23 03:57:03,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 6834 transitions. [2021-11-23 03:57:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:03,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:03,219 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] [2021-11-23 03:57:03,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-23 03:57:03,219 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:03,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:03,220 INFO L85 PathProgramCache]: Analyzing trace with hash -17075080, now seen corresponding path program 6 times [2021-11-23 03:57:03,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:03,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461685422] [2021-11-23 03:57:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:03,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:03,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:03,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461685422] [2021-11-23 03:57:03,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461685422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:03,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:03,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:57:03,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012259833] [2021-11-23 03:57:03,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:03,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:57:03,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:57:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:57:03,593 INFO L87 Difference]: Start difference. First operand 2958 states and 6834 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:08,248 INFO L93 Difference]: Finished difference Result 4387 states and 10036 transitions. [2021-11-23 03:57:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:57:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:08,256 INFO L225 Difference]: With dead ends: 4387 [2021-11-23 03:57:08,257 INFO L226 Difference]: Without dead ends: 4387 [2021-11-23 03:57:08,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=427, Invalid=1213, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 03:57:08,257 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 635 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 4665 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:08,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 32 Invalid, 4711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4665 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 03:57:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-11-23 03:57:08,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 2959. [2021-11-23 03:57:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2949 states have (on average 2.318073923363852) internal successors, (6836), 2958 states have internal predecessors, (6836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 6836 transitions. [2021-11-23 03:57:08,318 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 6836 transitions. Word has length 20 [2021-11-23 03:57:08,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:08,318 INFO L470 AbstractCegarLoop]: Abstraction has 2959 states and 6836 transitions. [2021-11-23 03:57:08,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 6836 transitions. [2021-11-23 03:57:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:08,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:08,321 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] [2021-11-23 03:57:08,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-23 03:57:08,321 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:08,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:08,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1506613678, now seen corresponding path program 7 times [2021-11-23 03:57:08,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:08,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676362527] [2021-11-23 03:57:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:08,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:08,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:08,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676362527] [2021-11-23 03:57:08,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676362527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:08,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:08,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:57:08,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377588565] [2021-11-23 03:57:08,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:08,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:57:08,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:08,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:57:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:57:08,605 INFO L87 Difference]: Start difference. First operand 2959 states and 6836 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:12,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:12,437 INFO L93 Difference]: Finished difference Result 4653 states and 10682 transitions. [2021-11-23 03:57:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:57:12,438 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:12,445 INFO L225 Difference]: With dead ends: 4653 [2021-11-23 03:57:12,446 INFO L226 Difference]: Without dead ends: 4653 [2021-11-23 03:57:12,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=442, Invalid=1198, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 03:57:12,446 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 731 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:12,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 32 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 03:57:12,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-11-23 03:57:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 2958. [2021-11-23 03:57:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2948 states have (on average 2.3181818181818183) internal successors, (6834), 2957 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 6834 transitions. [2021-11-23 03:57:12,524 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 6834 transitions. Word has length 20 [2021-11-23 03:57:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:12,524 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 6834 transitions. [2021-11-23 03:57:12,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 6834 transitions. [2021-11-23 03:57:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:12,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:12,527 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] [2021-11-23 03:57:12,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-23 03:57:12,527 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2054491808, now seen corresponding path program 8 times [2021-11-23 03:57:12,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:12,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070348865] [2021-11-23 03:57:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:12,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:12,902 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:12,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070348865] [2021-11-23 03:57:12,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070348865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:12,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:12,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:57:12,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402641163] [2021-11-23 03:57:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:12,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:57:12,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:57:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:57:12,904 INFO L87 Difference]: Start difference. First operand 2958 states and 6834 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:17,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:17,558 INFO L93 Difference]: Finished difference Result 5670 states and 13061 transitions. [2021-11-23 03:57:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-23 03:57:17,558 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:17,567 INFO L225 Difference]: With dead ends: 5670 [2021-11-23 03:57:17,568 INFO L226 Difference]: Without dead ends: 5670 [2021-11-23 03:57:17,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=597, Invalid=1565, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 03:57:17,568 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1140 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:17,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 32 Invalid, 4828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 03:57:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-11-23 03:57:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 3020. [2021-11-23 03:57:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3010 states have (on average 2.317607973421927) internal successors, (6976), 3019 states have internal predecessors, (6976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 6976 transitions. [2021-11-23 03:57:17,640 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 6976 transitions. Word has length 20 [2021-11-23 03:57:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:17,640 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 6976 transitions. [2021-11-23 03:57:17,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 6976 transitions. [2021-11-23 03:57:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:17,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:17,643 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] [2021-11-23 03:57:17,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-23 03:57:17,643 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1920307518, now seen corresponding path program 9 times [2021-11-23 03:57:17,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:17,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699023665] [2021-11-23 03:57:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:17,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:17,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:17,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699023665] [2021-11-23 03:57:17,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699023665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:17,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:17,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:57:17,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9345720] [2021-11-23 03:57:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:17,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:57:17,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:57:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:57:17,973 INFO L87 Difference]: Start difference. First operand 3020 states and 6976 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:22,470 INFO L93 Difference]: Finished difference Result 5253 states and 12057 transitions. [2021-11-23 03:57:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-23 03:57:22,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:22,479 INFO L225 Difference]: With dead ends: 5253 [2021-11-23 03:57:22,479 INFO L226 Difference]: Without dead ends: 5253 [2021-11-23 03:57:22,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 03:57:22,481 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1032 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4477 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:22,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 32 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 4477 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 03:57:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5253 states. [2021-11-23 03:57:22,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5253 to 3020. [2021-11-23 03:57:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3010 states have (on average 2.317607973421927) internal successors, (6976), 3019 states have internal predecessors, (6976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 6976 transitions. [2021-11-23 03:57:22,542 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 6976 transitions. Word has length 20 [2021-11-23 03:57:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:22,542 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 6976 transitions. [2021-11-23 03:57:22,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 6976 transitions. [2021-11-23 03:57:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:22,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:22,544 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] [2021-11-23 03:57:22,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-23 03:57:22,544 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1063902700, now seen corresponding path program 10 times [2021-11-23 03:57:22,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:22,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466112875] [2021-11-23 03:57:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:22,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:22,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:22,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466112875] [2021-11-23 03:57:22,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466112875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:22,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:22,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:57:22,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151090194] [2021-11-23 03:57:22,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:22,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:57:22,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:57:22,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:57:22,880 INFO L87 Difference]: Start difference. First operand 3020 states and 6976 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:26,578 INFO L93 Difference]: Finished difference Result 4576 states and 10442 transitions. [2021-11-23 03:57:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:57:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:26,585 INFO L225 Difference]: With dead ends: 4576 [2021-11-23 03:57:26,585 INFO L226 Difference]: Without dead ends: 4576 [2021-11-23 03:57:26,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=427, Invalid=1133, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:57:26,586 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 795 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:26,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 32 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 03:57:26,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2021-11-23 03:57:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 3019. [2021-11-23 03:57:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 3009 states have (on average 2.3177135260884016) internal successors, (6974), 3018 states have internal predecessors, (6974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 6974 transitions. [2021-11-23 03:57:26,640 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 6974 transitions. Word has length 20 [2021-11-23 03:57:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:26,640 INFO L470 AbstractCegarLoop]: Abstraction has 3019 states and 6974 transitions. [2021-11-23 03:57:26,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 6974 transitions. [2021-11-23 03:57:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:26,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:26,642 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] [2021-11-23 03:57:26,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-23 03:57:26,643 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash 459786058, now seen corresponding path program 11 times [2021-11-23 03:57:26,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:26,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986311942] [2021-11-23 03:57:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:26,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:26,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:26,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986311942] [2021-11-23 03:57:26,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986311942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:26,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:26,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:57:26,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360980002] [2021-11-23 03:57:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:26,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:57:26,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:57:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:57:26,941 INFO L87 Difference]: Start difference. First operand 3019 states and 6974 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:31,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:31,009 INFO L93 Difference]: Finished difference Result 4977 states and 11409 transitions. [2021-11-23 03:57:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:57:31,009 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:31,016 INFO L225 Difference]: With dead ends: 4977 [2021-11-23 03:57:31,017 INFO L226 Difference]: Without dead ends: 4977 [2021-11-23 03:57:31,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=488, Invalid=1234, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 03:57:31,017 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 795 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:31,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 32 Invalid, 4251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4199 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 03:57:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2021-11-23 03:57:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 2939. [2021-11-23 03:57:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2929 states have (on average 2.3188801638784566) internal successors, (6792), 2938 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 6792 transitions. [2021-11-23 03:57:31,087 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 6792 transitions. Word has length 20 [2021-11-23 03:57:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:31,087 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 6792 transitions. [2021-11-23 03:57:31,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 6792 transitions. [2021-11-23 03:57:31,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:31,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:31,089 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] [2021-11-23 03:57:31,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-23 03:57:31,089 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:31,089 INFO L85 PathProgramCache]: Analyzing trace with hash -247937146, now seen corresponding path program 5 times [2021-11-23 03:57:31,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:31,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633647006] [2021-11-23 03:57:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:31,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:33,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:33,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633647006] [2021-11-23 03:57:33,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633647006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:33,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:33,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 03:57:33,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720692339] [2021-11-23 03:57:33,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:33,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:57:33,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:57:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:57:33,069 INFO L87 Difference]: Start difference. First operand 2939 states and 6792 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:41,571 INFO L93 Difference]: Finished difference Result 4017 states and 9184 transitions. [2021-11-23 03:57:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:57:41,571 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:41,576 INFO L225 Difference]: With dead ends: 4017 [2021-11-23 03:57:41,576 INFO L226 Difference]: Without dead ends: 4017 [2021-11-23 03:57:41,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=409, Invalid=1753, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 03:57:41,577 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 761 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 5700 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 5700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:41,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 35 Invalid, 5761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 5700 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 03:57:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2021-11-23 03:57:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 2955. [2021-11-23 03:57:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2945 states have (on average 2.3185059422750425) internal successors, (6828), 2954 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 6828 transitions. [2021-11-23 03:57:41,640 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 6828 transitions. Word has length 20 [2021-11-23 03:57:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:41,641 INFO L470 AbstractCegarLoop]: Abstraction has 2955 states and 6828 transitions. [2021-11-23 03:57:41,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 6828 transitions. [2021-11-23 03:57:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:41,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:41,643 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] [2021-11-23 03:57:41,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-23 03:57:41,644 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash -216178176, now seen corresponding path program 6 times [2021-11-23 03:57:41,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:41,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132377721] [2021-11-23 03:57:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:41,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:43,259 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:43,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132377721] [2021-11-23 03:57:43,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132377721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:43,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:43,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:57:43,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638364490] [2021-11-23 03:57:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:43,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:57:43,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:57:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:57:43,261 INFO L87 Difference]: Start difference. First operand 2955 states and 6828 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:51,422 INFO L93 Difference]: Finished difference Result 4115 states and 9425 transitions. [2021-11-23 03:57:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:57:51,423 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:57:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:51,445 INFO L225 Difference]: With dead ends: 4115 [2021-11-23 03:57:51,445 INFO L226 Difference]: Without dead ends: 4115 [2021-11-23 03:57:51,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=395, Invalid=1411, Unknown=0, NotChecked=0, Total=1806 [2021-11-23 03:57:51,446 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 742 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 4973 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:51,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 35 Invalid, 5019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4973 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 03:57:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-11-23 03:57:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 2948. [2021-11-23 03:57:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.318924438393465) internal successors, (6813), 2947 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6813 transitions. [2021-11-23 03:57:51,487 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6813 transitions. Word has length 20 [2021-11-23 03:57:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:51,488 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6813 transitions. [2021-11-23 03:57:51,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:57:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6813 transitions. [2021-11-23 03:57:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:57:51,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:51,489 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] [2021-11-23 03:57:51,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-23 03:57:51,490 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:57:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:51,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1728617314, now seen corresponding path program 7 times [2021-11-23 03:57:51,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:51,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417939960] [2021-11-23 03:57:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:51,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:57:54,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:54,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417939960] [2021-11-23 03:57:54,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417939960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:54,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:54,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 03:57:54,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368695148] [2021-11-23 03:57:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:54,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:57:54,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:57:54,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:57:54,044 INFO L87 Difference]: Start difference. First operand 2948 states and 6813 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:09,320 INFO L93 Difference]: Finished difference Result 3950 states and 9046 transitions. [2021-11-23 03:58:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-23 03:58:09,321 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:58:09,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:09,325 INFO L225 Difference]: With dead ends: 3950 [2021-11-23 03:58:09,326 INFO L226 Difference]: Without dead ends: 3950 [2021-11-23 03:58:09,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2021-11-23 03:58:09,326 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 773 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 7457 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 7457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:09,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 25 Invalid, 7501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 7457 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-11-23 03:58:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2021-11-23 03:58:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 2948. [2021-11-23 03:58:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.318924438393465) internal successors, (6813), 2947 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6813 transitions. [2021-11-23 03:58:09,371 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6813 transitions. Word has length 20 [2021-11-23 03:58:09,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:09,372 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6813 transitions. [2021-11-23 03:58:09,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6813 transitions. [2021-11-23 03:58:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:58:09,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:09,374 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] [2021-11-23 03:58:09,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-23 03:58:09,374 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:58:09,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:09,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1278584104, now seen corresponding path program 8 times [2021-11-23 03:58:09,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:09,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404067084] [2021-11-23 03:58:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:09,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:58:11,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:11,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404067084] [2021-11-23 03:58:11,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404067084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:58:11,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:58:11,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:58:11,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550694628] [2021-11-23 03:58:11,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:11,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:58:11,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:58:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:58:11,096 INFO L87 Difference]: Start difference. First operand 2948 states and 6813 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:17,609 INFO L93 Difference]: Finished difference Result 3954 states and 9050 transitions. [2021-11-23 03:58:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:58:17,612 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:58:17,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:17,618 INFO L225 Difference]: With dead ends: 3954 [2021-11-23 03:58:17,618 INFO L226 Difference]: Without dead ends: 3954 [2021-11-23 03:58:17,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 03:58:17,618 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 792 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:17,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 25 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-23 03:58:17,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-11-23 03:58:17,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 2950. [2021-11-23 03:58:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2940 states have (on average 2.3187074829931973) internal successors, (6817), 2949 states have internal predecessors, (6817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 6817 transitions. [2021-11-23 03:58:17,673 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 6817 transitions. Word has length 20 [2021-11-23 03:58:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:17,673 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 6817 transitions. [2021-11-23 03:58:17,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 6817 transitions. [2021-11-23 03:58:17,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:58:17,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:17,675 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] [2021-11-23 03:58:17,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-23 03:58:17,676 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:58:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1252419680, now seen corresponding path program 9 times [2021-11-23 03:58:17,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760080150] [2021-11-23 03:58:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:17,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:58:19,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:19,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760080150] [2021-11-23 03:58:19,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760080150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:58:19,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:58:19,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:58:19,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380173480] [2021-11-23 03:58:19,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:19,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:58:19,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:58:19,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:58:19,508 INFO L87 Difference]: Start difference. First operand 2950 states and 6817 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:29,773 INFO L93 Difference]: Finished difference Result 4021 states and 9205 transitions. [2021-11-23 03:58:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 03:58:29,773 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:58:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:29,778 INFO L225 Difference]: With dead ends: 4021 [2021-11-23 03:58:29,778 INFO L226 Difference]: Without dead ends: 4021 [2021-11-23 03:58:29,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=368, Invalid=1612, Unknown=0, NotChecked=0, Total=1980 [2021-11-23 03:58:29,779 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 636 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 7177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:29,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 25 Invalid, 7216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 7177 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-23 03:58:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-11-23 03:58:29,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 2952. [2021-11-23 03:58:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2942 states have (on average 2.3184908225696805) internal successors, (6821), 2951 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 6821 transitions. [2021-11-23 03:58:29,839 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 6821 transitions. Word has length 20 [2021-11-23 03:58:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:29,840 INFO L470 AbstractCegarLoop]: Abstraction has 2952 states and 6821 transitions. [2021-11-23 03:58:29,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 6821 transitions. [2021-11-23 03:58:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:58:29,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:29,841 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] [2021-11-23 03:58:29,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-23 03:58:29,841 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:58:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1195224482, now seen corresponding path program 10 times [2021-11-23 03:58:29,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:29,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109634845] [2021-11-23 03:58:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:29,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:58:31,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:31,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109634845] [2021-11-23 03:58:31,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109634845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:58:31,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:58:31,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:58:31,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290521696] [2021-11-23 03:58:31,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:31,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:58:31,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:58:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:58:31,519 INFO L87 Difference]: Start difference. First operand 2952 states and 6821 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:40,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:40,613 INFO L93 Difference]: Finished difference Result 4007 states and 9174 transitions. [2021-11-23 03:58:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 03:58:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:58:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:40,619 INFO L225 Difference]: With dead ends: 4007 [2021-11-23 03:58:40,619 INFO L226 Difference]: Without dead ends: 4007 [2021-11-23 03:58:40,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=437, Invalid=1819, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 03:58:40,620 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 772 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 5384 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:40,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 25 Invalid, 5425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 5384 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 03:58:40,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-23 03:58:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 2954. [2021-11-23 03:58:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-23 03:58:40,665 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-23 03:58:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:40,666 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-23 03:58:40,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-23 03:58:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:58:40,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:40,667 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] [2021-11-23 03:58:40,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-23 03:58:40,668 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:58:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1762869424, now seen corresponding path program 11 times [2021-11-23 03:58:40,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:40,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785682624] [2021-11-23 03:58:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:40,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:58:42,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:42,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785682624] [2021-11-23 03:58:42,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785682624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:58:42,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:58:42,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:58:42,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680963084] [2021-11-23 03:58:42,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:42,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:58:42,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:58:42,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:58:42,322 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:50,464 INFO L93 Difference]: Finished difference Result 4331 states and 9912 transitions. [2021-11-23 03:58:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:58:50,465 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:58:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:50,470 INFO L225 Difference]: With dead ends: 4331 [2021-11-23 03:58:50,470 INFO L226 Difference]: Without dead ends: 4331 [2021-11-23 03:58:50,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2021-11-23 03:58:50,470 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 723 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 5604 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:50,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 25 Invalid, 5648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 5604 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 03:58:50,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2021-11-23 03:58:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 2954. [2021-11-23 03:58:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-23 03:58:50,524 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-23 03:58:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:50,524 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-23 03:58:50,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:58:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-23 03:58:50,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:58:50,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:50,526 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] [2021-11-23 03:58:50,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-23 03:58:50,526 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:58:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash 504204054, now seen corresponding path program 12 times [2021-11-23 03:58:50,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:50,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348792537] [2021-11-23 03:58:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:50,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:58:52,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:52,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348792537] [2021-11-23 03:58:52,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348792537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:58:52,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:58:52,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 03:58:52,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920342741] [2021-11-23 03:58:52,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:52,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:58:52,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:58:52,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:58:52,756 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:59:04,802 INFO L93 Difference]: Finished difference Result 3988 states and 9128 transitions. [2021-11-23 03:59:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 03:59:04,803 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:59:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:59:04,808 INFO L225 Difference]: With dead ends: 3988 [2021-11-23 03:59:04,808 INFO L226 Difference]: Without dead ends: 3988 [2021-11-23 03:59:04,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=464, Invalid=1986, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 03:59:04,808 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 881 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 5802 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:59:04,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 25 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 5802 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 03:59:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2021-11-23 03:59:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 2954. [2021-11-23 03:59:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-23 03:59:04,856 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-23 03:59:04,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:59:04,856 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-23 03:59:04,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-23 03:59:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:59:04,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:59:04,858 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] [2021-11-23 03:59:04,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-23 03:59:04,858 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:59:04,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:59:04,858 INFO L85 PathProgramCache]: Analyzing trace with hash -598248128, now seen corresponding path program 13 times [2021-11-23 03:59:04,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:59:04,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363857619] [2021-11-23 03:59:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:59:04,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:59:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:59:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:59:07,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:59:07,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363857619] [2021-11-23 03:59:07,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363857619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:59:07,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:59:07,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 03:59:07,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193019022] [2021-11-23 03:59:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:59:07,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:59:07,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:59:07,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:59:07,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:59:07,443 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:59:21,634 INFO L93 Difference]: Finished difference Result 3987 states and 9155 transitions. [2021-11-23 03:59:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-23 03:59:21,634 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:59:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:59:21,639 INFO L225 Difference]: With dead ends: 3987 [2021-11-23 03:59:21,639 INFO L226 Difference]: Without dead ends: 3987 [2021-11-23 03:59:21,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=550, Invalid=2312, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 03:59:21,639 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 759 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 6586 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 6586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:59:21,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 35 Invalid, 6630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 6586 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 03:59:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2021-11-23 03:59:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 2945. [2021-11-23 03:59:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2935 states have (on average 2.318228279386712) internal successors, (6804), 2944 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 6804 transitions. [2021-11-23 03:59:21,681 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 6804 transitions. Word has length 20 [2021-11-23 03:59:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:59:21,681 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 6804 transitions. [2021-11-23 03:59:21,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 6804 transitions. [2021-11-23 03:59:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:59:21,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:59:21,683 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] [2021-11-23 03:59:21,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-23 03:59:21,683 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:59:21,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:59:21,684 INFO L85 PathProgramCache]: Analyzing trace with hash 663493322, now seen corresponding path program 14 times [2021-11-23 03:59:21,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:59:21,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427886977] [2021-11-23 03:59:21,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:59:21,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:59:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:59:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:59:23,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:59:23,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427886977] [2021-11-23 03:59:23,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427886977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:59:23,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:59:23,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 03:59:23,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585238379] [2021-11-23 03:59:23,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:59:23,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:59:23,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:59:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:59:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:59:23,382 INFO L87 Difference]: Start difference. First operand 2945 states and 6804 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:59:33,161 INFO L93 Difference]: Finished difference Result 4586 states and 10459 transitions. [2021-11-23 03:59:33,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-23 03:59:33,161 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:59:33,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:59:33,167 INFO L225 Difference]: With dead ends: 4586 [2021-11-23 03:59:33,167 INFO L226 Difference]: Without dead ends: 4586 [2021-11-23 03:59:33,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=624, Invalid=2568, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 03:59:33,167 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 939 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 5275 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 5275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:59:33,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 34 Invalid, 5355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 5275 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 03:59:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-11-23 03:59:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 2970. [2021-11-23 03:59:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2960 states have (on average 2.3172297297297297) internal successors, (6859), 2969 states have internal predecessors, (6859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 6859 transitions. [2021-11-23 03:59:33,214 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 6859 transitions. Word has length 20 [2021-11-23 03:59:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:59:33,214 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 6859 transitions. [2021-11-23 03:59:33,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 6859 transitions. [2021-11-23 03:59:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:59:33,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:59:33,217 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] [2021-11-23 03:59:33,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-23 03:59:33,217 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:59:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:59:33,217 INFO L85 PathProgramCache]: Analyzing trace with hash 695252292, now seen corresponding path program 15 times [2021-11-23 03:59:33,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:59:33,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936015712] [2021-11-23 03:59:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:59:33,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:59:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:59:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:59:34,662 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:59:34,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936015712] [2021-11-23 03:59:34,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936015712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:59:34,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:59:34,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:59:34,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635994959] [2021-11-23 03:59:34,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:59:34,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:59:34,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:59:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:59:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:59:34,664 INFO L87 Difference]: Start difference. First operand 2970 states and 6859 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:59:42,748 INFO L93 Difference]: Finished difference Result 4312 states and 9865 transitions. [2021-11-23 03:59:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-23 03:59:42,748 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:59:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:59:42,753 INFO L225 Difference]: With dead ends: 4312 [2021-11-23 03:59:42,753 INFO L226 Difference]: Without dead ends: 4312 [2021-11-23 03:59:42,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=462, Invalid=1608, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 03:59:42,754 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 681 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 5399 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:59:42,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 34 Invalid, 5447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 5399 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 03:59:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2021-11-23 03:59:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 2945. [2021-11-23 03:59:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2935 states have (on average 2.318228279386712) internal successors, (6804), 2944 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 6804 transitions. [2021-11-23 03:59:42,800 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 6804 transitions. Word has length 20 [2021-11-23 03:59:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:59:42,801 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 6804 transitions. [2021-11-23 03:59:42,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 6804 transitions. [2021-11-23 03:59:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:59:42,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:59:42,803 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] [2021-11-23 03:59:42,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-23 03:59:42,803 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:59:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:59:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -998762342, now seen corresponding path program 16 times [2021-11-23 03:59:42,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:59:42,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489040603] [2021-11-23 03:59:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:59:42,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:59:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:59:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:59:44,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:59:44,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489040603] [2021-11-23 03:59:44,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489040603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:59:44,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:59:44,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 03:59:44,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397836418] [2021-11-23 03:59:44,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:59:44,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:59:44,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:59:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:59:44,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:59:44,464 INFO L87 Difference]: Start difference. First operand 2945 states and 6804 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:59:52,042 INFO L93 Difference]: Finished difference Result 4452 states and 10145 transitions. [2021-11-23 03:59:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 03:59:52,042 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:59:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:59:52,047 INFO L225 Difference]: With dead ends: 4452 [2021-11-23 03:59:52,047 INFO L226 Difference]: Without dead ends: 4452 [2021-11-23 03:59:52,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=369, Invalid=1701, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 03:59:52,048 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 655 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 5504 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 5504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:59:52,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 34 Invalid, 5570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 5504 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 03:59:52,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2021-11-23 03:59:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 2976. [2021-11-23 03:59:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2966 states have (on average 2.317936614969656) internal successors, (6875), 2975 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 6875 transitions. [2021-11-23 03:59:52,091 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 6875 transitions. Word has length 20 [2021-11-23 03:59:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:59:52,091 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 6875 transitions. [2021-11-23 03:59:52,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 6875 transitions. [2021-11-23 03:59:52,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:59:52,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:59:52,093 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] [2021-11-23 03:59:52,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-23 03:59:52,093 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:59:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:59:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash -967003372, now seen corresponding path program 17 times [2021-11-23 03:59:52,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:59:52,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812331518] [2021-11-23 03:59:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:59:52,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:59:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:59:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:59:53,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:59:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812331518] [2021-11-23 03:59:53,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812331518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:59:53,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:59:53,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 03:59:53,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541114785] [2021-11-23 03:59:53,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:59:53,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:59:53,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:59:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:59:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:59:53,422 INFO L87 Difference]: Start difference. First operand 2976 states and 6875 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:59:59,903 INFO L93 Difference]: Finished difference Result 4493 states and 10259 transitions. [2021-11-23 03:59:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:59:59,903 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-23 03:59:59,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:59:59,908 INFO L225 Difference]: With dead ends: 4493 [2021-11-23 03:59:59,908 INFO L226 Difference]: Without dead ends: 4493 [2021-11-23 03:59:59,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=361, Invalid=1199, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:59:59,908 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 601 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 4465 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 4496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:59:59,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 34 Invalid, 4496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4465 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 03:59:59,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2021-11-23 03:59:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 2910. [2021-11-23 03:59:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2900 states have (on average 2.31551724137931) internal successors, (6715), 2909 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 6715 transitions. [2021-11-23 03:59:59,949 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 6715 transitions. Word has length 20 [2021-11-23 03:59:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:59:59,949 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 6715 transitions. [2021-11-23 03:59:59,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:59:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 6715 transitions. [2021-11-23 03:59:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:59:59,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:59:59,951 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] [2021-11-23 03:59:59,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-23 03:59:59,951 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:59:59,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:59:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash -286405738, now seen corresponding path program 1 times [2021-11-23 03:59:59,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:59:59,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387462936] [2021-11-23 03:59:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:59:59,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:59:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:00,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:00,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387462936] [2021-11-23 04:00:00,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387462936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:00,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:00,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 04:00:00,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725160420] [2021-11-23 04:00:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:00,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 04:00:00,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:00,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 04:00:00,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-23 04:00:00,285 INFO L87 Difference]: Start difference. First operand 2910 states and 6715 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:02,027 INFO L93 Difference]: Finished difference Result 3566 states and 8143 transitions. [2021-11-23 04:00:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 04:00:02,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:02,032 INFO L225 Difference]: With dead ends: 3566 [2021-11-23 04:00:02,032 INFO L226 Difference]: Without dead ends: 3566 [2021-11-23 04:00:02,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-11-23 04:00:02,033 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 233 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:02,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 17 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 04:00:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2021-11-23 04:00:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 2948. [2021-11-23 04:00:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.3185840707964602) internal successors, (6812), 2947 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6812 transitions. [2021-11-23 04:00:02,070 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6812 transitions. Word has length 21 [2021-11-23 04:00:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:02,070 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6812 transitions. [2021-11-23 04:00:02,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6812 transitions. [2021-11-23 04:00:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:02,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:02,071 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] [2021-11-23 04:00:02,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-23 04:00:02,072 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash 698122332, now seen corresponding path program 2 times [2021-11-23 04:00:02,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:02,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573723890] [2021-11-23 04:00:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:02,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:03,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573723890] [2021-11-23 04:00:03,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573723890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:03,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:03,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:00:03,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236914404] [2021-11-23 04:00:03,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:03,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:00:03,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:00:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:00:03,634 INFO L87 Difference]: Start difference. First operand 2948 states and 6812 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:14,160 INFO L93 Difference]: Finished difference Result 5672 states and 12847 transitions. [2021-11-23 04:00:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 04:00:14,160 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:14,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:14,166 INFO L225 Difference]: With dead ends: 5672 [2021-11-23 04:00:14,166 INFO L226 Difference]: Without dead ends: 5672 [2021-11-23 04:00:14,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=540, Invalid=2430, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 04:00:14,167 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 879 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 7266 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 7266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:14,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 35 Invalid, 7395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 7266 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 04:00:14,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-11-23 04:00:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 2999. [2021-11-23 04:00:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2989 states have (on average 2.3195048511207763) internal successors, (6933), 2998 states have internal predecessors, (6933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 6933 transitions. [2021-11-23 04:00:14,216 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 6933 transitions. Word has length 21 [2021-11-23 04:00:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:14,216 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 6933 transitions. [2021-11-23 04:00:14,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 6933 transitions. [2021-11-23 04:00:14,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:14,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:14,218 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] [2021-11-23 04:00:14,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-23 04:00:14,218 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1831465724, now seen corresponding path program 3 times [2021-11-23 04:00:14,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:14,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779916168] [2021-11-23 04:00:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:14,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:14,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:14,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779916168] [2021-11-23 04:00:14,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779916168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:14,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:14,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 04:00:14,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601429776] [2021-11-23 04:00:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:14,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 04:00:14,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 04:00:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 04:00:14,456 INFO L87 Difference]: Start difference. First operand 2999 states and 6933 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:15,871 INFO L93 Difference]: Finished difference Result 3888 states and 8852 transitions. [2021-11-23 04:00:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 04:00:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:15,876 INFO L225 Difference]: With dead ends: 3888 [2021-11-23 04:00:15,876 INFO L226 Difference]: Without dead ends: 3888 [2021-11-23 04:00:15,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-23 04:00:15,876 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 317 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:15,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 32 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 04:00:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-11-23 04:00:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3051. [2021-11-23 04:00:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 3041 states have (on average 2.319960539296284) internal successors, (7055), 3050 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 7055 transitions. [2021-11-23 04:00:15,933 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 7055 transitions. Word has length 21 [2021-11-23 04:00:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:15,933 INFO L470 AbstractCegarLoop]: Abstraction has 3051 states and 7055 transitions. [2021-11-23 04:00:15,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 7055 transitions. [2021-11-23 04:00:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:15,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:15,935 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] [2021-11-23 04:00:15,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-23 04:00:15,935 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1835242454, now seen corresponding path program 4 times [2021-11-23 04:00:15,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:15,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006627004] [2021-11-23 04:00:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:15,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:17,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:17,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006627004] [2021-11-23 04:00:17,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006627004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:17,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:17,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:00:17,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328498034] [2021-11-23 04:00:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:17,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:00:17,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:00:17,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:00:17,805 INFO L87 Difference]: Start difference. First operand 3051 states and 7055 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:24,558 INFO L93 Difference]: Finished difference Result 4824 states and 11056 transitions. [2021-11-23 04:00:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 04:00:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:24,563 INFO L225 Difference]: With dead ends: 4824 [2021-11-23 04:00:24,564 INFO L226 Difference]: Without dead ends: 4824 [2021-11-23 04:00:24,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=411, Invalid=1659, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 04:00:24,564 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 619 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 4284 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:24,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 35 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4284 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 04:00:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2021-11-23 04:00:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 3059. [2021-11-23 04:00:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 3049 states have (on average 2.321416857986225) internal successors, (7078), 3058 states have internal predecessors, (7078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 7078 transitions. [2021-11-23 04:00:24,609 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 7078 transitions. Word has length 21 [2021-11-23 04:00:24,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:24,609 INFO L470 AbstractCegarLoop]: Abstraction has 3059 states and 7078 transitions. [2021-11-23 04:00:24,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 7078 transitions. [2021-11-23 04:00:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:24,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:24,611 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] [2021-11-23 04:00:24,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-23 04:00:24,611 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1277758066, now seen corresponding path program 1 times [2021-11-23 04:00:24,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:24,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991559030] [2021-11-23 04:00:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:24,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:24,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:24,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991559030] [2021-11-23 04:00:24,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991559030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:24,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:24,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 04:00:24,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818168161] [2021-11-23 04:00:24,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:24,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 04:00:24,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 04:00:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 04:00:24,757 INFO L87 Difference]: Start difference. First operand 3059 states and 7078 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:26,861 INFO L93 Difference]: Finished difference Result 7149 states and 16110 transitions. [2021-11-23 04:00:26,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 04:00:26,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:26,871 INFO L225 Difference]: With dead ends: 7149 [2021-11-23 04:00:26,871 INFO L226 Difference]: Without dead ends: 7125 [2021-11-23 04:00:26,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2021-11-23 04:00:26,872 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 941 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:26,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 82 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 04:00:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7125 states. [2021-11-23 04:00:26,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7125 to 3165. [2021-11-23 04:00:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3155 states have (on average 2.3182250396196515) internal successors, (7314), 3164 states have internal predecessors, (7314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 7314 transitions. [2021-11-23 04:00:26,932 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 7314 transitions. Word has length 21 [2021-11-23 04:00:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:26,932 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 7314 transitions. [2021-11-23 04:00:26,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 7314 transitions. [2021-11-23 04:00:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:26,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:26,934 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] [2021-11-23 04:00:26,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-23 04:00:26,934 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:26,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1671461424, now seen corresponding path program 5 times [2021-11-23 04:00:26,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:26,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963069501] [2021-11-23 04:00:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:26,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:27,266 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:27,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963069501] [2021-11-23 04:00:27,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963069501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:27,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:27,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 04:00:27,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400540075] [2021-11-23 04:00:27,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:27,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 04:00:27,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 04:00:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-23 04:00:27,267 INFO L87 Difference]: Start difference. First operand 3165 states and 7314 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:29,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:29,048 INFO L93 Difference]: Finished difference Result 3793 states and 8660 transitions. [2021-11-23 04:00:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 04:00:29,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:29,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:29,053 INFO L225 Difference]: With dead ends: 3793 [2021-11-23 04:00:29,053 INFO L226 Difference]: Without dead ends: 3793 [2021-11-23 04:00:29,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2021-11-23 04:00:29,054 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 397 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:29,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 17 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 04:00:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2021-11-23 04:00:29,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3176. [2021-11-23 04:00:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 3166 states have (on average 2.316171825647505) internal successors, (7333), 3175 states have internal predecessors, (7333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 7333 transitions. [2021-11-23 04:00:29,097 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 7333 transitions. Word has length 21 [2021-11-23 04:00:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:29,097 INFO L470 AbstractCegarLoop]: Abstraction has 3176 states and 7333 transitions. [2021-11-23 04:00:29,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 7333 transitions. [2021-11-23 04:00:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:29,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:29,099 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] [2021-11-23 04:00:29,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-23 04:00:29,099 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash -686933354, now seen corresponding path program 6 times [2021-11-23 04:00:29,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:29,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548840671] [2021-11-23 04:00:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:29,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:30,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:30,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548840671] [2021-11-23 04:00:30,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548840671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:30,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:30,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 04:00:30,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751424608] [2021-11-23 04:00:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:30,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 04:00:30,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:30,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 04:00:30,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-11-23 04:00:30,049 INFO L87 Difference]: Start difference. First operand 3176 states and 7333 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:33,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:33,281 INFO L93 Difference]: Finished difference Result 4883 states and 11199 transitions. [2021-11-23 04:00:33,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 04:00:33,281 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:33,290 INFO L225 Difference]: With dead ends: 4883 [2021-11-23 04:00:33,290 INFO L226 Difference]: Without dead ends: 4883 [2021-11-23 04:00:33,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-11-23 04:00:33,291 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 636 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:33,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 35 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 04:00:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2021-11-23 04:00:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 3246. [2021-11-23 04:00:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3236 states have (on average 2.322929542645241) internal successors, (7517), 3245 states have internal predecessors, (7517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 7517 transitions. [2021-11-23 04:00:33,359 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 7517 transitions. Word has length 21 [2021-11-23 04:00:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:33,360 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 7517 transitions. [2021-11-23 04:00:33,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 7517 transitions. [2021-11-23 04:00:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:33,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:33,362 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] [2021-11-23 04:00:33,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-23 04:00:33,362 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:33,362 INFO L85 PathProgramCache]: Analyzing trace with hash 446410038, now seen corresponding path program 7 times [2021-11-23 04:00:33,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:33,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461899047] [2021-11-23 04:00:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:33,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:33,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:33,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461899047] [2021-11-23 04:00:33,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461899047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:33,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:33,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 04:00:33,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381781264] [2021-11-23 04:00:33,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:33,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 04:00:33,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 04:00:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-23 04:00:33,609 INFO L87 Difference]: Start difference. First operand 3246 states and 7517 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:35,527 INFO L93 Difference]: Finished difference Result 4038 states and 9225 transitions. [2021-11-23 04:00:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 04:00:35,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:35,533 INFO L225 Difference]: With dead ends: 4038 [2021-11-23 04:00:35,533 INFO L226 Difference]: Without dead ends: 4038 [2021-11-23 04:00:35,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:00:35,533 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 315 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:35,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 32 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 04:00:35,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-11-23 04:00:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 3246. [2021-11-23 04:00:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3236 states have (on average 2.323547589616811) internal successors, (7519), 3245 states have internal predecessors, (7519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 7519 transitions. [2021-11-23 04:00:35,582 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 7519 transitions. Word has length 21 [2021-11-23 04:00:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:35,583 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 7519 transitions. [2021-11-23 04:00:35,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 7519 transitions. [2021-11-23 04:00:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:35,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:35,585 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] [2021-11-23 04:00:35,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-23 04:00:35,586 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:35,586 INFO L85 PathProgramCache]: Analyzing trace with hash 450186768, now seen corresponding path program 8 times [2021-11-23 04:00:35,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:35,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863303304] [2021-11-23 04:00:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:35,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:37,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:37,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863303304] [2021-11-23 04:00:37,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863303304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:37,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:37,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:00:37,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495632359] [2021-11-23 04:00:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:37,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:00:37,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:37,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:00:37,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:00:37,559 INFO L87 Difference]: Start difference. First operand 3246 states and 7519 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:45,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:45,448 INFO L93 Difference]: Finished difference Result 5084 states and 11653 transitions. [2021-11-23 04:00:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 04:00:45,448 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:45,454 INFO L225 Difference]: With dead ends: 5084 [2021-11-23 04:00:45,454 INFO L226 Difference]: Without dead ends: 5084 [2021-11-23 04:00:45,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 04:00:45,455 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 596 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:45,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 35 Invalid, 5355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 5284 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 04:00:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2021-11-23 04:00:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 3249. [2021-11-23 04:00:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3239 states have (on average 2.3244828650818152) internal successors, (7529), 3248 states have internal predecessors, (7529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 7529 transitions. [2021-11-23 04:00:45,507 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 7529 transitions. Word has length 21 [2021-11-23 04:00:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:45,507 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 7529 transitions. [2021-11-23 04:00:45,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 7529 transitions. [2021-11-23 04:00:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:45,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:45,510 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] [2021-11-23 04:00:45,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-23 04:00:45,510 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:45,511 INFO L85 PathProgramCache]: Analyzing trace with hash -994720252, now seen corresponding path program 9 times [2021-11-23 04:00:45,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:45,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45415991] [2021-11-23 04:00:45,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:45,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:48,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:48,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45415991] [2021-11-23 04:00:48,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45415991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:48,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:48,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 04:00:48,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005654213] [2021-11-23 04:00:48,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:48,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 04:00:48,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 04:00:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-23 04:00:48,504 INFO L87 Difference]: Start difference. First operand 3249 states and 7529 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:56,880 INFO L93 Difference]: Finished difference Result 5398 states and 12363 transitions. [2021-11-23 04:00:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 04:00:56,880 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:00:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:56,886 INFO L225 Difference]: With dead ends: 5398 [2021-11-23 04:00:56,887 INFO L226 Difference]: Without dead ends: 5398 [2021-11-23 04:00:56,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 04:00:56,887 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1194 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:56,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 34 Invalid, 5599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 04:00:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2021-11-23 04:00:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 3287. [2021-11-23 04:00:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3277 states have (on average 2.324382056759231) internal successors, (7617), 3286 states have internal predecessors, (7617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 7617 transitions. [2021-11-23 04:00:56,940 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 7617 transitions. Word has length 21 [2021-11-23 04:00:56,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:56,940 INFO L470 AbstractCegarLoop]: Abstraction has 3287 states and 7617 transitions. [2021-11-23 04:00:56,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:00:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 7617 transitions. [2021-11-23 04:00:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:00:56,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:56,942 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] [2021-11-23 04:00:56,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-23 04:00:56,942 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:00:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash -10192182, now seen corresponding path program 10 times [2021-11-23 04:00:56,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:56,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516034261] [2021-11-23 04:00:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:56,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:58,220 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:58,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516034261] [2021-11-23 04:00:58,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516034261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:58,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:58,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:00:58,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412056726] [2021-11-23 04:00:58,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:58,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:00:58,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:00:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:00:58,221 INFO L87 Difference]: Start difference. First operand 3287 states and 7617 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:07,220 INFO L93 Difference]: Finished difference Result 5739 states and 13131 transitions. [2021-11-23 04:01:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 04:01:07,221 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:07,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:07,228 INFO L225 Difference]: With dead ends: 5739 [2021-11-23 04:01:07,228 INFO L226 Difference]: Without dead ends: 5739 [2021-11-23 04:01:07,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=547, Invalid=2105, Unknown=0, NotChecked=0, Total=2652 [2021-11-23 04:01:07,229 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1349 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 5090 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 5090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:07,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 35 Invalid, 5192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 5090 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 04:01:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2021-11-23 04:01:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 3223. [2021-11-23 04:01:07,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3213 states have (on average 2.321817615935263) internal successors, (7460), 3222 states have internal predecessors, (7460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 7460 transitions. [2021-11-23 04:01:07,288 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 7460 transitions. Word has length 21 [2021-11-23 04:01:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:07,288 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 7460 transitions. [2021-11-23 04:01:07,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 7460 transitions. [2021-11-23 04:01:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:07,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:07,290 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] [2021-11-23 04:01:07,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-23 04:01:07,290 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:07,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1363865414, now seen corresponding path program 1 times [2021-11-23 04:01:07,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:07,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918342949] [2021-11-23 04:01:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:07,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:07,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:07,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918342949] [2021-11-23 04:01:07,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918342949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:07,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:07,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 04:01:07,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396460751] [2021-11-23 04:01:07,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:07,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 04:01:07,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:07,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 04:01:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-23 04:01:07,789 INFO L87 Difference]: Start difference. First operand 3223 states and 7460 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:10,417 INFO L93 Difference]: Finished difference Result 5140 states and 11603 transitions. [2021-11-23 04:01:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 04:01:10,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:10,424 INFO L225 Difference]: With dead ends: 5140 [2021-11-23 04:01:10,424 INFO L226 Difference]: Without dead ends: 5118 [2021-11-23 04:01:10,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-11-23 04:01:10,424 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 445 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:10,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 35 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 04:01:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2021-11-23 04:01:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 3219. [2021-11-23 04:01:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3209 states have (on average 2.320972265503272) internal successors, (7448), 3218 states have internal predecessors, (7448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 7448 transitions. [2021-11-23 04:01:10,477 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 7448 transitions. Word has length 21 [2021-11-23 04:01:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:10,477 INFO L470 AbstractCegarLoop]: Abstraction has 3219 states and 7448 transitions. [2021-11-23 04:01:10,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:10,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 7448 transitions. [2021-11-23 04:01:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:10,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:10,478 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] [2021-11-23 04:01:10,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-23 04:01:10,478 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash -329528118, now seen corresponding path program 11 times [2021-11-23 04:01:10,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:10,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344929081] [2021-11-23 04:01:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:10,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:10,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:10,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344929081] [2021-11-23 04:01:10,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344929081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:10,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:10,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 04:01:10,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012328383] [2021-11-23 04:01:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:10,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 04:01:10,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 04:01:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-23 04:01:10,868 INFO L87 Difference]: Start difference. First operand 3219 states and 7448 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:13,045 INFO L93 Difference]: Finished difference Result 3615 states and 8325 transitions. [2021-11-23 04:01:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 04:01:13,045 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:13,050 INFO L225 Difference]: With dead ends: 3615 [2021-11-23 04:01:13,050 INFO L226 Difference]: Without dead ends: 3615 [2021-11-23 04:01:13,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-23 04:01:13,051 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 243 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:13,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 17 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 04:01:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2021-11-23 04:01:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3247. [2021-11-23 04:01:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 3237 states have (on average 2.32159406858202) internal successors, (7515), 3246 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 7515 transitions. [2021-11-23 04:01:13,094 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 7515 transitions. Word has length 21 [2021-11-23 04:01:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:13,095 INFO L470 AbstractCegarLoop]: Abstraction has 3247 states and 7515 transitions. [2021-11-23 04:01:13,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 7515 transitions. [2021-11-23 04:01:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:13,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:13,097 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] [2021-11-23 04:01:13,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-23 04:01:13,098 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:13,098 INFO L85 PathProgramCache]: Analyzing trace with hash 654999952, now seen corresponding path program 12 times [2021-11-23 04:01:13,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:13,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375121014] [2021-11-23 04:01:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:13,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:14,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:14,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375121014] [2021-11-23 04:01:14,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375121014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:14,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:14,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:01:14,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459187773] [2021-11-23 04:01:14,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:14,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:01:14,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:14,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:01:14,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:01:14,796 INFO L87 Difference]: Start difference. First operand 3247 states and 7515 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:26,356 INFO L93 Difference]: Finished difference Result 5675 states and 12933 transitions. [2021-11-23 04:01:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-23 04:01:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:26,368 INFO L225 Difference]: With dead ends: 5675 [2021-11-23 04:01:26,369 INFO L226 Difference]: Without dead ends: 5675 [2021-11-23 04:01:26,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=554, Invalid=2638, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 04:01:26,369 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 827 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 8227 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 8227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:26,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 35 Invalid, 8326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 8227 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-23 04:01:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2021-11-23 04:01:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 3249. [2021-11-23 04:01:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3239 states have (on average 2.3223217042297004) internal successors, (7522), 3248 states have internal predecessors, (7522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 7522 transitions. [2021-11-23 04:01:26,439 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 7522 transitions. Word has length 21 [2021-11-23 04:01:26,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:26,439 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 7522 transitions. [2021-11-23 04:01:26,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 7522 transitions. [2021-11-23 04:01:26,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:26,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:26,440 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] [2021-11-23 04:01:26,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-23 04:01:26,440 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:26,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:26,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1788343344, now seen corresponding path program 13 times [2021-11-23 04:01:26,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:26,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923320745] [2021-11-23 04:01:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:26,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:26,693 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:26,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923320745] [2021-11-23 04:01:26,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923320745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:26,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:26,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 04:01:26,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507713300] [2021-11-23 04:01:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:26,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 04:01:26,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:26,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 04:01:26,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 04:01:26,695 INFO L87 Difference]: Start difference. First operand 3249 states and 7522 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:28,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:28,323 INFO L93 Difference]: Finished difference Result 4010 states and 9179 transitions. [2021-11-23 04:01:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 04:01:28,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:28,328 INFO L225 Difference]: With dead ends: 4010 [2021-11-23 04:01:28,329 INFO L226 Difference]: Without dead ends: 4010 [2021-11-23 04:01:28,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-23 04:01:28,329 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 249 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:28,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 32 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 04:01:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-11-23 04:01:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3269. [2021-11-23 04:01:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 3259 states have (on average 2.3227984044185335) internal successors, (7570), 3268 states have internal predecessors, (7570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 7570 transitions. [2021-11-23 04:01:28,400 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 7570 transitions. Word has length 21 [2021-11-23 04:01:28,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:28,400 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 7570 transitions. [2021-11-23 04:01:28,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:28,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 7570 transitions. [2021-11-23 04:01:28,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:28,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:28,403 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] [2021-11-23 04:01:28,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-23 04:01:28,403 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1792120074, now seen corresponding path program 14 times [2021-11-23 04:01:28,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:28,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938508616] [2021-11-23 04:01:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:28,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:30,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:30,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938508616] [2021-11-23 04:01:30,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938508616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:30,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:30,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:01:30,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882395478] [2021-11-23 04:01:30,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:30,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:01:30,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:30,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:01:30,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:01:30,584 INFO L87 Difference]: Start difference. First operand 3269 states and 7570 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:38,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:38,717 INFO L93 Difference]: Finished difference Result 5019 states and 11531 transitions. [2021-11-23 04:01:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 04:01:38,718 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:38,724 INFO L225 Difference]: With dead ends: 5019 [2021-11-23 04:01:38,724 INFO L226 Difference]: Without dead ends: 5019 [2021-11-23 04:01:38,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=457, Invalid=1993, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 04:01:38,724 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 619 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 5128 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 5128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:38,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 35 Invalid, 5214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 5128 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 04:01:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5019 states. [2021-11-23 04:01:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5019 to 3277. [2021-11-23 04:01:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3267 states have (on average 2.3241505968778697) internal successors, (7593), 3276 states have internal predecessors, (7593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 7593 transitions. [2021-11-23 04:01:38,776 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 7593 transitions. Word has length 21 [2021-11-23 04:01:38,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:38,776 INFO L470 AbstractCegarLoop]: Abstraction has 3277 states and 7593 transitions. [2021-11-23 04:01:38,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 7593 transitions. [2021-11-23 04:01:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:38,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:38,777 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] [2021-11-23 04:01:38,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-23 04:01:38,778 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:38,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:38,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1714583804, now seen corresponding path program 15 times [2021-11-23 04:01:38,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:38,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203656506] [2021-11-23 04:01:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:38,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:39,140 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:39,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203656506] [2021-11-23 04:01:39,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203656506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:39,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:39,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 04:01:39,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788097443] [2021-11-23 04:01:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:39,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 04:01:39,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 04:01:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 04:01:39,142 INFO L87 Difference]: Start difference. First operand 3277 states and 7593 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:41,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:41,788 INFO L93 Difference]: Finished difference Result 3802 states and 8733 transitions. [2021-11-23 04:01:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 04:01:41,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:41,793 INFO L225 Difference]: With dead ends: 3802 [2021-11-23 04:01:41,794 INFO L226 Difference]: Without dead ends: 3802 [2021-11-23 04:01:41,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-23 04:01:41,794 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 303 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:41,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 17 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 04:01:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2021-11-23 04:01:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3304. [2021-11-23 04:01:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 3294 states have (on average 2.3221007893139043) internal successors, (7649), 3303 states have internal predecessors, (7649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 7649 transitions. [2021-11-23 04:01:41,860 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 7649 transitions. Word has length 21 [2021-11-23 04:01:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:41,860 INFO L470 AbstractCegarLoop]: Abstraction has 3304 states and 7649 transitions. [2021-11-23 04:01:41,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 7649 transitions. [2021-11-23 04:01:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:41,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:41,861 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] [2021-11-23 04:01:41,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-23 04:01:41,862 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:41,862 INFO L85 PathProgramCache]: Analyzing trace with hash -730055734, now seen corresponding path program 16 times [2021-11-23 04:01:41,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:41,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2205894] [2021-11-23 04:01:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:41,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:42,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:42,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2205894] [2021-11-23 04:01:42,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2205894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:42,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:42,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 04:01:42,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503537537] [2021-11-23 04:01:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:42,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 04:01:42,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 04:01:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-23 04:01:42,854 INFO L87 Difference]: Start difference. First operand 3304 states and 7649 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:46,661 INFO L93 Difference]: Finished difference Result 4988 states and 11469 transitions. [2021-11-23 04:01:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 04:01:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:46,668 INFO L225 Difference]: With dead ends: 4988 [2021-11-23 04:01:46,668 INFO L226 Difference]: Without dead ends: 4988 [2021-11-23 04:01:46,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=303, Invalid=957, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 04:01:46,668 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 647 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 3257 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:46,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 35 Invalid, 3321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3257 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 04:01:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-11-23 04:01:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 3323. [2021-11-23 04:01:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 3313 states have (on average 2.322668276486568) internal successors, (7695), 3322 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 7695 transitions. [2021-11-23 04:01:46,720 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 7695 transitions. Word has length 21 [2021-11-23 04:01:46,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:46,720 INFO L470 AbstractCegarLoop]: Abstraction has 3323 states and 7695 transitions. [2021-11-23 04:01:46,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 7695 transitions. [2021-11-23 04:01:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:46,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:46,724 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] [2021-11-23 04:01:46,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-23 04:01:46,724 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 403287658, now seen corresponding path program 17 times [2021-11-23 04:01:46,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:46,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355069072] [2021-11-23 04:01:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:46,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:46,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:46,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355069072] [2021-11-23 04:01:46,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355069072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:46,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:46,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 04:01:46,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831698376] [2021-11-23 04:01:46,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:46,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 04:01:46,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:46,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 04:01:46,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 04:01:46,972 INFO L87 Difference]: Start difference. First operand 3323 states and 7695 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:48,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:48,668 INFO L93 Difference]: Finished difference Result 4130 states and 9442 transitions. [2021-11-23 04:01:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 04:01:48,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:48,674 INFO L225 Difference]: With dead ends: 4130 [2021-11-23 04:01:48,674 INFO L226 Difference]: Without dead ends: 4130 [2021-11-23 04:01:48,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-23 04:01:48,675 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 307 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:48,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 32 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 04:01:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-11-23 04:01:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3316. [2021-11-23 04:01:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 3306 states have (on average 2.323049001814882) internal successors, (7680), 3315 states have internal predecessors, (7680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 7680 transitions. [2021-11-23 04:01:48,730 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 7680 transitions. Word has length 21 [2021-11-23 04:01:48,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:48,730 INFO L470 AbstractCegarLoop]: Abstraction has 3316 states and 7680 transitions. [2021-11-23 04:01:48,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 7680 transitions. [2021-11-23 04:01:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:48,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:48,732 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] [2021-11-23 04:01:48,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-23 04:01:48,732 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash 407064388, now seen corresponding path program 18 times [2021-11-23 04:01:48,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:48,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645020690] [2021-11-23 04:01:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:48,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:01:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:01:50,800 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:01:50,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645020690] [2021-11-23 04:01:50,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645020690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:01:50,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:01:50,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:01:50,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598285880] [2021-11-23 04:01:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:01:50,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:01:50,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:01:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:01:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:01:50,801 INFO L87 Difference]: Start difference. First operand 3316 states and 7680 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:01:58,703 INFO L93 Difference]: Finished difference Result 5101 states and 11719 transitions. [2021-11-23 04:01:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 04:01:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:01:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:01:58,710 INFO L225 Difference]: With dead ends: 5101 [2021-11-23 04:01:58,710 INFO L226 Difference]: Without dead ends: 5101 [2021-11-23 04:01:58,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=472, Invalid=1978, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 04:01:58,711 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 690 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 5242 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 5242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 04:01:58,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 35 Invalid, 5323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 5242 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 04:01:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-11-23 04:01:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3319. [2021-11-23 04:01:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 3309 states have (on average 2.3239649440918706) internal successors, (7690), 3318 states have internal predecessors, (7690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 7690 transitions. [2021-11-23 04:01:58,766 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 7690 transitions. Word has length 21 [2021-11-23 04:01:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:01:58,767 INFO L470 AbstractCegarLoop]: Abstraction has 3319 states and 7690 transitions. [2021-11-23 04:01:58,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:01:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 7690 transitions. [2021-11-23 04:01:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:01:58,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:01:58,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 04:01:58,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-23 04:01:58,768 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:01:58,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:01:58,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1037842632, now seen corresponding path program 19 times [2021-11-23 04:01:58,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:01:58,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675771389] [2021-11-23 04:01:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:01:58,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:01:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:01,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:01,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675771389] [2021-11-23 04:02:01,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675771389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:01,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:01,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 04:02:01,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368480978] [2021-11-23 04:02:01,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:01,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 04:02:01,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 04:02:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-23 04:02:01,735 INFO L87 Difference]: Start difference. First operand 3319 states and 7690 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:10,627 INFO L93 Difference]: Finished difference Result 5337 states and 12259 transitions. [2021-11-23 04:02:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 04:02:10,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:02:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:10,634 INFO L225 Difference]: With dead ends: 5337 [2021-11-23 04:02:10,634 INFO L226 Difference]: Without dead ends: 5337 [2021-11-23 04:02:10,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=428, Invalid=2022, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 04:02:10,634 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1124 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:10,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 34 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 5439 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 04:02:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2021-11-23 04:02:10,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 3364. [2021-11-23 04:02:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 3354 states have (on average 2.323494335122242) internal successors, (7793), 3363 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 7793 transitions. [2021-11-23 04:02:10,689 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 7793 transitions. Word has length 21 [2021-11-23 04:02:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:10,689 INFO L470 AbstractCegarLoop]: Abstraction has 3364 states and 7793 transitions. [2021-11-23 04:02:10,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:10,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 7793 transitions. [2021-11-23 04:02:10,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:02:10,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:10,691 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] [2021-11-23 04:02:10,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-23 04:02:10,691 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:02:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash -53314562, now seen corresponding path program 20 times [2021-11-23 04:02:10,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:10,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953593478] [2021-11-23 04:02:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:10,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:11,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:11,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953593478] [2021-11-23 04:02:11,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953593478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:11,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:11,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:02:11,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977861531] [2021-11-23 04:02:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:11,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:02:11,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:11,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:02:11,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:02:11,823 INFO L87 Difference]: Start difference. First operand 3364 states and 7793 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:23,150 INFO L93 Difference]: Finished difference Result 5859 states and 13441 transitions. [2021-11-23 04:02:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 04:02:23,151 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:02:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:23,157 INFO L225 Difference]: With dead ends: 5859 [2021-11-23 04:02:23,157 INFO L226 Difference]: Without dead ends: 5859 [2021-11-23 04:02:23,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=591, Invalid=2489, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 04:02:23,158 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 986 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 8292 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 8292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:23,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 35 Invalid, 8372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 8292 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 04:02:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5859 states. [2021-11-23 04:02:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5859 to 3266. [2021-11-23 04:02:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3256 states have (on average 2.3215601965601964) internal successors, (7559), 3265 states have internal predecessors, (7559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 7559 transitions. [2021-11-23 04:02:23,210 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 7559 transitions. Word has length 21 [2021-11-23 04:02:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:23,210 INFO L470 AbstractCegarLoop]: Abstraction has 3266 states and 7559 transitions. [2021-11-23 04:02:23,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 7559 transitions. [2021-11-23 04:02:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:02:23,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:23,212 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] [2021-11-23 04:02:23,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-23 04:02:23,212 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:02:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1556675290, now seen corresponding path program 2 times [2021-11-23 04:02:23,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:23,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403649762] [2021-11-23 04:02:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:23,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:23,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:23,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403649762] [2021-11-23 04:02:23,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403649762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:23,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:23,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 04:02:23,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184257773] [2021-11-23 04:02:23,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:23,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 04:02:23,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:23,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 04:02:23,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 04:02:23,348 INFO L87 Difference]: Start difference. First operand 3266 states and 7559 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:26,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:26,500 INFO L93 Difference]: Finished difference Result 12458 states and 28163 transitions. [2021-11-23 04:02:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 04:02:26,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:02:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:26,519 INFO L225 Difference]: With dead ends: 12458 [2021-11-23 04:02:26,519 INFO L226 Difference]: Without dead ends: 12419 [2021-11-23 04:02:26,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 04:02:26,519 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 934 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 3634 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 3687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:26,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 161 Invalid, 3687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3634 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 04:02:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2021-11-23 04:02:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 3274. [2021-11-23 04:02:26,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3264 states have (on average 2.3216911764705883) internal successors, (7578), 3273 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 7578 transitions. [2021-11-23 04:02:26,606 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 7578 transitions. Word has length 21 [2021-11-23 04:02:26,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:26,606 INFO L470 AbstractCegarLoop]: Abstraction has 3274 states and 7578 transitions. [2021-11-23 04:02:26,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 7578 transitions. [2021-11-23 04:02:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:02:26,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:26,609 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] [2021-11-23 04:02:26,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-23 04:02:26,609 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:02:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2054747582, now seen corresponding path program 3 times [2021-11-23 04:02:26,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:26,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461011003] [2021-11-23 04:02:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:26,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:26,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:26,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461011003] [2021-11-23 04:02:26,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461011003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:26,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:26,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 04:02:26,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644787819] [2021-11-23 04:02:26,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:26,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 04:02:26,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:26,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 04:02:26,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 04:02:26,748 INFO L87 Difference]: Start difference. First operand 3274 states and 7578 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:29,413 INFO L93 Difference]: Finished difference Result 9999 states and 22656 transitions. [2021-11-23 04:02:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 04:02:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:02:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:29,427 INFO L225 Difference]: With dead ends: 9999 [2021-11-23 04:02:29,427 INFO L226 Difference]: Without dead ends: 9960 [2021-11-23 04:02:29,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 04:02:29,428 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 801 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:29,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 133 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 04:02:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2021-11-23 04:02:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 3214. [2021-11-23 04:02:29,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3204 states have (on average 2.3220973782771535) internal successors, (7440), 3213 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 7440 transitions. [2021-11-23 04:02:29,525 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 7440 transitions. Word has length 21 [2021-11-23 04:02:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:29,525 INFO L470 AbstractCegarLoop]: Abstraction has 3214 states and 7440 transitions. [2021-11-23 04:02:29,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 7440 transitions. [2021-11-23 04:02:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:02:29,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:29,527 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] [2021-11-23 04:02:29,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-23 04:02:29,527 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:02:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:29,527 INFO L85 PathProgramCache]: Analyzing trace with hash 903936930, now seen corresponding path program 21 times [2021-11-23 04:02:29,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:29,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806326546] [2021-11-23 04:02:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:29,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:30,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:30,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806326546] [2021-11-23 04:02:30,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806326546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:30,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:30,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 04:02:30,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755474733] [2021-11-23 04:02:30,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:30,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 04:02:30,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:30,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 04:02:30,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-23 04:02:30,186 INFO L87 Difference]: Start difference. First operand 3214 states and 7440 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:33,572 INFO L93 Difference]: Finished difference Result 4376 states and 9860 transitions. [2021-11-23 04:02:33,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 04:02:33,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:02:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:33,578 INFO L225 Difference]: With dead ends: 4376 [2021-11-23 04:02:33,578 INFO L226 Difference]: Without dead ends: 4375 [2021-11-23 04:02:33,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2021-11-23 04:02:33,578 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 735 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:33,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 45 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 04:02:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-11-23 04:02:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 3427. [2021-11-23 04:02:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 3409 states have (on average 2.3024347315928426) internal successors, (7849), 3426 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 7849 transitions. [2021-11-23 04:02:33,624 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 7849 transitions. Word has length 21 [2021-11-23 04:02:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:33,625 INFO L470 AbstractCegarLoop]: Abstraction has 3427 states and 7849 transitions. [2021-11-23 04:02:33,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 7849 transitions. [2021-11-23 04:02:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:02:33,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:33,627 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] [2021-11-23 04:02:33,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-23 04:02:33,628 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:02:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1888465000, now seen corresponding path program 22 times [2021-11-23 04:02:33,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:33,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286625955] [2021-11-23 04:02:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:33,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:34,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:34,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286625955] [2021-11-23 04:02:34,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286625955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:34,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:34,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:02:34,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255331018] [2021-11-23 04:02:34,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:34,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:02:34,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:34,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:02:34,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:02:34,973 INFO L87 Difference]: Start difference. First operand 3427 states and 7849 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:43,093 INFO L93 Difference]: Finished difference Result 5930 states and 13465 transitions. [2021-11-23 04:02:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 04:02:43,094 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:02:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:43,101 INFO L225 Difference]: With dead ends: 5930 [2021-11-23 04:02:43,101 INFO L226 Difference]: Without dead ends: 5930 [2021-11-23 04:02:43,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 04:02:43,101 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 932 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 5913 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 5913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:43,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 35 Invalid, 6014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 5913 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 04:02:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5930 states. [2021-11-23 04:02:43,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5930 to 3429. [2021-11-23 04:02:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3429 states, 3411 states have (on average 2.303136909997068) internal successors, (7856), 3428 states have internal predecessors, (7856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 7856 transitions. [2021-11-23 04:02:43,158 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 7856 transitions. Word has length 21 [2021-11-23 04:02:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:43,158 INFO L470 AbstractCegarLoop]: Abstraction has 3429 states and 7856 transitions. [2021-11-23 04:02:43,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 7856 transitions. [2021-11-23 04:02:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:02:43,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:43,160 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] [2021-11-23 04:02:43,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-23 04:02:43,160 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:02:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1273158904, now seen corresponding path program 23 times [2021-11-23 04:02:43,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:43,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221513030] [2021-11-23 04:02:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:43,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:43,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:43,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221513030] [2021-11-23 04:02:43,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221513030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:43,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:43,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 04:02:43,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489866255] [2021-11-23 04:02:43,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:43,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 04:02:43,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 04:02:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 04:02:43,373 INFO L87 Difference]: Start difference. First operand 3429 states and 7856 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:44,992 INFO L93 Difference]: Finished difference Result 4007 states and 9108 transitions. [2021-11-23 04:02:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 04:02:44,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:02:44,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:44,998 INFO L225 Difference]: With dead ends: 4007 [2021-11-23 04:02:44,998 INFO L226 Difference]: Without dead ends: 4007 [2021-11-23 04:02:44,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-11-23 04:02:44,998 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 251 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:44,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 32 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 04:02:45,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-23 04:02:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3436. [2021-11-23 04:02:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3418 states have (on average 2.302808660035108) internal successors, (7871), 3435 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 7871 transitions. [2021-11-23 04:02:45,043 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 7871 transitions. Word has length 21 [2021-11-23 04:02:45,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:45,043 INFO L470 AbstractCegarLoop]: Abstraction has 3436 states and 7871 transitions. [2021-11-23 04:02:45,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:45,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 7871 transitions. [2021-11-23 04:02:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:02:45,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:45,048 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] [2021-11-23 04:02:45,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-23 04:02:45,048 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:02:45,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1269382174, now seen corresponding path program 24 times [2021-11-23 04:02:45,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:45,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547510543] [2021-11-23 04:02:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:45,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:46,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:46,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547510543] [2021-11-23 04:02:46,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547510543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:46,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:46,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:02:46,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034174252] [2021-11-23 04:02:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:46,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:02:46,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:02:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:02:46,861 INFO L87 Difference]: Start difference. First operand 3436 states and 7871 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:56,522 INFO L93 Difference]: Finished difference Result 5458 states and 12428 transitions. [2021-11-23 04:02:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-23 04:02:56,523 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:02:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:56,529 INFO L225 Difference]: With dead ends: 5458 [2021-11-23 04:02:56,529 INFO L226 Difference]: Without dead ends: 5458 [2021-11-23 04:02:56,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=680, Invalid=2980, Unknown=0, NotChecked=0, Total=3660 [2021-11-23 04:02:56,529 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 739 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 6279 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 6279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:56,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 35 Invalid, 6392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 6279 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 04:02:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2021-11-23 04:02:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 3448. [2021-11-23 04:02:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3430 states have (on average 2.3043731778425656) internal successors, (7904), 3447 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 7904 transitions. [2021-11-23 04:02:56,580 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 7904 transitions. Word has length 21 [2021-11-23 04:02:56,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:56,580 INFO L470 AbstractCegarLoop]: Abstraction has 3448 states and 7904 transitions. [2021-11-23 04:02:56,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:02:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 7904 transitions. [2021-11-23 04:02:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:02:56,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:56,582 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] [2021-11-23 04:02:56,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-23 04:02:56,582 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:02:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1580678102, now seen corresponding path program 25 times [2021-11-23 04:02:56,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:56,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269859255] [2021-11-23 04:02:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:56,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:02:59,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:59,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269859255] [2021-11-23 04:02:59,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269859255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:59,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:59,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 04:02:59,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909111194] [2021-11-23 04:02:59,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:59,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 04:02:59,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 04:02:59,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-23 04:02:59,350 INFO L87 Difference]: Start difference. First operand 3448 states and 7904 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:03:11,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:03:11,246 INFO L93 Difference]: Finished difference Result 5401 states and 12257 transitions. [2021-11-23 04:03:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-23 04:03:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:03:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:03:11,252 INFO L225 Difference]: With dead ends: 5401 [2021-11-23 04:03:11,252 INFO L226 Difference]: Without dead ends: 5401 [2021-11-23 04:03:11,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=632, Invalid=2790, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 04:03:11,253 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1121 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 7504 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 7504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 04:03:11,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 34 Invalid, 7605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 7504 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 04:03:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2021-11-23 04:03:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 3486. [2021-11-23 04:03:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3468 states have (on average 2.3044982698961936) internal successors, (7992), 3485 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:03:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 7992 transitions. [2021-11-23 04:03:11,305 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 7992 transitions. Word has length 21 [2021-11-23 04:03:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:03:11,306 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 7992 transitions. [2021-11-23 04:03:11,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:03:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 7992 transitions. [2021-11-23 04:03:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:03:11,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:03:11,307 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] [2021-11-23 04:03:11,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-23 04:03:11,308 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:03:11,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:03:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1729761124, now seen corresponding path program 26 times [2021-11-23 04:03:11,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:03:11,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540791492] [2021-11-23 04:03:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:03:11,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:03:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:03:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:03:12,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:03:12,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540791492] [2021-11-23 04:03:12,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540791492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:03:12,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:03:12,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 04:03:12,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968432010] [2021-11-23 04:03:12,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:03:12,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 04:03:12,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:03:12,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 04:03:12,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-23 04:03:12,534 INFO L87 Difference]: Start difference. First operand 3486 states and 7992 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:03:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:03:23,567 INFO L93 Difference]: Finished difference Result 5883 states and 13379 transitions. [2021-11-23 04:03:23,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 04:03:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-23 04:03:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:03:23,573 INFO L225 Difference]: With dead ends: 5883 [2021-11-23 04:03:23,574 INFO L226 Difference]: Without dead ends: 5883 [2021-11-23 04:03:23,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=594, Invalid=2598, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 04:03:23,574 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1042 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 7487 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 7487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 04:03:23,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 35 Invalid, 7566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 7487 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 04:03:23,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2021-11-23 04:03:23,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 3427. [2021-11-23 04:03:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 3409 states have (on average 2.3024347315928426) internal successors, (7849), 3426 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:03:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 7849 transitions. [2021-11-23 04:03:23,628 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 7849 transitions. Word has length 21 [2021-11-23 04:03:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:03:23,628 INFO L470 AbstractCegarLoop]: Abstraction has 3427 states and 7849 transitions. [2021-11-23 04:03:23,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 04:03:23,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 7849 transitions. [2021-11-23 04:03:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 04:03:23,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:03:23,630 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] [2021-11-23 04:03:23,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-23 04:03:23,630 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 04:03:23,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:03:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2047475318, now seen corresponding path program 27 times [2021-11-23 04:03:23,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:03:23,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037679513] [2021-11-23 04:03:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:03:23,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:03:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:03:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:03:26,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:03:26,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037679513] [2021-11-23 04:03:26,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037679513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:03:26,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:03:26,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 04:03:26,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643649154] [2021-11-23 04:03:26,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:03:26,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 04:03:26,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:03:26,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 04:03:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-23 04:03:26,693 INFO L87 Difference]: Start difference. First operand 3427 states and 7849 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)