./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:13:58,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:13:58,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:13:58,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:13:58,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:13:58,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:13:58,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:13:58,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:13:58,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:13:58,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:13:58,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:13:58,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:13:58,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:13:58,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:13:58,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:13:58,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:13:58,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:13:58,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:13:58,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:13:58,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:13:58,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:13:58,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:13:58,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:13:58,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:13:58,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:13:58,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:13:58,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:13:58,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:13:58,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:13:58,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:13:58,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:13:58,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:13:58,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:13:58,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:13:58,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:13:58,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:13:58,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:13:58,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:13:58,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:13:58,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:13:58,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:13:58,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:13:58,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:13:58,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:13:58,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:13:58,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:13:58,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:13:58,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:13:58,162 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:13:58,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:13:58,163 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:13:58,163 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:13:58,163 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:13:58,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:13:58,163 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:13:58,164 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:13:58,164 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:13:58,164 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:13:58,164 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:13:58,164 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:13:58,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:13:58,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:13:58,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:13:58,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:13:58,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:13:58,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:13:58,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:13:58,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:13:58,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:13:58,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:13:58,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:13:58,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:13:58,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:13:58,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:13:58,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:58,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:13:58,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:13:58,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:13:58,169 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:13:58,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:13:58,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:13:58,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:13:58,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:13:58,169 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_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 [2021-11-20 23:13:58,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:13:58,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:13:58,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:13:58,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:13:58,412 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:13:58,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2021-11-20 23:13:58,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/data/f326918a1/f9bca9f2b71b413c8b6bbd5b6c919200/FLAGef3fb7dcb [2021-11-20 23:13:59,102 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:13:59,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i [2021-11-20 23:13:59,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/data/f326918a1/f9bca9f2b71b413c8b6bbd5b6c919200/FLAGef3fb7dcb [2021-11-20 23:13:59,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/data/f326918a1/f9bca9f2b71b413c8b6bbd5b6c919200 [2021-11-20 23:13:59,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:13:59,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:13:59,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:59,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:13:59,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:13:59,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:59" (1/1) ... [2021-11-20 23:13:59,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e32e2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:59, skipping insertion in model container [2021-11-20 23:13:59,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:59" (1/1) ... [2021-11-20 23:13:59,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:13:59,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:13:59,562 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 23:13:59,920 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2021-11-20 23:13:59,926 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2021-11-20 23:13:59,939 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2021-11-20 23:13:59,943 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2021-11-20 23:13:59,947 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2021-11-20 23:13:59,948 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2021-11-20 23:13:59,956 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2021-11-20 23:13:59,958 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2021-11-20 23:13:59,960 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2021-11-20 23:13:59,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:59,974 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:13:59,986 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 23:14:00,024 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47275,47288] [2021-11-20 23:14:00,026 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[47463,47476] [2021-11-20 23:14:00,032 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48230,48243] [2021-11-20 23:14:00,033 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48344,48357] [2021-11-20 23:14:00,036 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48781,48794] [2021-11-20 23:14:00,037 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[48837,48850] [2021-11-20 23:14:00,041 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49349,49362] [2021-11-20 23:14:00,042 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49408,49421] [2021-11-20 23:14:00,043 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_9c74b119-09f9-417d-856d-fb31e07375da/sv-benchmarks/c/pthread-divine/divinefifo_1w1r.i[49487,49500] [2021-11-20 23:14:00,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:14:00,151 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:14:00,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00 WrapperNode [2021-11-20 23:14:00,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:14:00,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:14:00,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:14:00,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:14:00,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,257 INFO L137 Inliner]: procedures = 278, calls = 101, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 405 [2021-11-20 23:14:00,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:14:00,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:14:00,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:14:00,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:14:00,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:14:00,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:14:00,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:14:00,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:14:00,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (1/1) ... [2021-11-20 23:14:00,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:14:00,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:00,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:14:00,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:14:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2021-11-20 23:14:00,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2021-11-20 23:14:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:14:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:14:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:14:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:14:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:14:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:14:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:14:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:14:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:14:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:14:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:14:00,414 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 23:14:00,550 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:14:00,551 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:14:01,320 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:14:01,338 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:14:01,338 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 23:14:01,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:01 BoogieIcfgContainer [2021-11-20 23:14:01,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:14:01,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:14:01,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:14:01,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:14:01,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:13:59" (1/3) ... [2021-11-20 23:14:01,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0b36a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:01, skipping insertion in model container [2021-11-20 23:14:01,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:00" (2/3) ... [2021-11-20 23:14:01,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0b36a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:01, skipping insertion in model container [2021-11-20 23:14:01,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:01" (3/3) ... [2021-11-20 23:14:01,353 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2021-11-20 23:14:01,359 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 23:14:01,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:14:01,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-20 23:14:01,360 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 23:14:01,439 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,440 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,440 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,440 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,441 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,441 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,441 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,441 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,442 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,442 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,442 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,442 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,443 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,443 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,443 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,443 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,444 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,444 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,444 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,444 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,445 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,445 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,445 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,445 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,446 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,446 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,446 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,447 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,447 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,447 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,447 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,447 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,448 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,448 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,448 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,448 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,449 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,449 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,449 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,449 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,450 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,450 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,450 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,450 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,451 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,451 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,451 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,451 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,452 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,452 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,452 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,452 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,452 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,453 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,453 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,453 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,453 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,454 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,454 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,454 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,454 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,455 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,455 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,455 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,455 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,456 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,456 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,456 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,456 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,457 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,457 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,457 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,457 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,457 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,458 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,458 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,458 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,458 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,459 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,459 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,459 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,459 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,459 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,460 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,460 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,460 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,460 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,461 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,461 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,461 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,461 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,461 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,462 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,462 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,462 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,462 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,463 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,463 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,463 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,463 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,464 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,464 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,464 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,464 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,465 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,465 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,465 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,465 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,466 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,466 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,466 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,466 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,467 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,467 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,467 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,467 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,468 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,468 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,468 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,468 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,469 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,469 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,469 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,470 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,470 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,470 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,470 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,471 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,471 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,471 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,471 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,472 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,472 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,472 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,473 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,473 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,473 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,473 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,474 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,474 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,474 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,474 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,475 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,475 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,475 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,476 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,476 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,476 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,476 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,477 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,477 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,477 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,477 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,478 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,478 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,478 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,478 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,479 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,479 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,479 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,480 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,480 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,480 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,480 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,481 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,481 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,481 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,481 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,482 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,482 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,482 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,482 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,483 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,483 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,483 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,483 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,484 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,484 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,484 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,484 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,485 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,485 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,485 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,485 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,486 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,486 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,486 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,486 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,487 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,487 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,487 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,487 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,488 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,488 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,488 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,488 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,489 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,489 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,489 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,489 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,490 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,490 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,490 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,490 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,491 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,491 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,491 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,491 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,492 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,492 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,492 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,492 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,493 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,493 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,493 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,493 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,493 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,494 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,494 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,494 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,494 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,495 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,495 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,495 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,495 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,496 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,496 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,496 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,496 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,497 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,497 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,497 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,497 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,498 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,498 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,498 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,498 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,499 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,499 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,499 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,499 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,500 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,500 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,500 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,500 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,501 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,501 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,501 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,501 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,502 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,502 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,502 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,503 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,503 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,503 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,503 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,504 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,504 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,504 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,505 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,505 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,506 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,506 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,522 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,522 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,523 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,523 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,523 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,523 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,524 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,524 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,524 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,524 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,525 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,525 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,525 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,525 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,526 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,526 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,526 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,526 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,527 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,527 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,527 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,527 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,528 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,528 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,528 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,528 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,528 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,529 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,529 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,529 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,529 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,530 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,530 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,530 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,530 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,531 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,531 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,531 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,531 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,532 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,532 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,532 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,532 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,532 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,533 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,533 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,533 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,533 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,534 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,534 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,534 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,534 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,535 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,535 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,535 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,535 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,535 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,536 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,536 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,536 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,536 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,537 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,537 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,537 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,537 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,537 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,538 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,538 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,538 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,538 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,539 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,539 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,539 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,539 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,539 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,540 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,540 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,540 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,540 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,541 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,541 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,541 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,551 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,552 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,552 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,552 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,552 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,554 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,554 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,554 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,554 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,555 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,555 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,555 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,555 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,556 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,556 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,556 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,556 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,557 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,557 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre60#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,557 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,557 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre60#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,558 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,558 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,558 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,558 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,559 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,559 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,559 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,559 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,559 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,560 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,560 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,560 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,560 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,561 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,561 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,561 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,561 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre60#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,562 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre60#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,565 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,578 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,578 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,579 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,579 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,579 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,579 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,580 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,580 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,580 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,580 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,581 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,581 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,581 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,581 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,582 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,582 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,582 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,582 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,583 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,583 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,583 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,583 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,584 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,584 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre60#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,584 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,584 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,585 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,585 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,585 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,585 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,586 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,586 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,586 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,586 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,587 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,587 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,587 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,587 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,588 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,588 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,588 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,595 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,595 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:14:01,626 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-20 23:14:01,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:14:01,701 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:14:01,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-20 23:14:01,729 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-20 23:14:01,745 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 467 places, 495 transitions, 998 flow [2021-11-20 23:14:01,748 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 467 places, 495 transitions, 998 flow [2021-11-20 23:14:01,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 467 places, 495 transitions, 998 flow [2021-11-20 23:14:01,952 INFO L129 PetriNetUnfolder]: 32/494 cut-off events. [2021-11-20 23:14:01,953 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-20 23:14:01,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 494 events. 32/494 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1131 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 340. Up to 3 conditions per place. [2021-11-20 23:14:02,020 INFO L116 LiptonReduction]: Number of co-enabled transitions 35328 [2021-11-20 23:14:41,707 WARN L227 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 243 DAG size of output: 237 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 23:14:49,978 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 255 DAG size of output: 249 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 23:14:52,423 INFO L131 LiptonReduction]: Checked pairs total: 117265 [2021-11-20 23:14:52,423 INFO L133 LiptonReduction]: Total number of compositions: 524 [2021-11-20 23:14:52,442 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 104 places, 119 transitions, 246 flow [2021-11-20 23:14:52,540 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1413 states, 1402 states have (on average 2.3067047075606277) internal successors, (3234), 1412 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 1413 states, 1402 states have (on average 2.3067047075606277) internal successors, (3234), 1412 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:52,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-11-20 23:14:52,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:52,555 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-11-20 23:14:52,565 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)] === [2021-11-20 23:14:52,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1746, now seen corresponding path program 1 times [2021-11-20 23:14:52,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:52,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928945372] [2021-11-20 23:14:52,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:52,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:52,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928945372] [2021-11-20 23:14:52,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928945372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:52,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:52,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-11-20 23:14:52,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043607081] [2021-11-20 23:14:52,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:52,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:14:52,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:14:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:14:52,795 INFO L87 Difference]: Start difference. First operand has 1413 states, 1402 states have (on average 2.3067047075606277) internal successors, (3234), 1412 states have internal predecessors, (3234), 0 states have call successors, (0), 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) [2021-11-20 23:14:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:53,106 INFO L93 Difference]: Finished difference Result 1412 states and 3157 transitions. [2021-11-20 23:14:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:14:53,109 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 [2021-11-20 23:14:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:53,146 INFO L225 Difference]: With dead ends: 1412 [2021-11-20 23:14:53,146 INFO L226 Difference]: Without dead ends: 1412 [2021-11-20 23:14:53,148 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 [2021-11-20 23:14:53,160 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:53,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:14:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2021-11-20 23:14:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2021-11-20 23:14:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1402 states have (on average 2.2517831669044224) internal successors, (3157), 1411 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 3157 transitions. [2021-11-20 23:14:53,322 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 3157 transitions. Word has length 1 [2021-11-20 23:14:53,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:53,323 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 3157 transitions. [2021-11-20 23:14:53,323 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) [2021-11-20 23:14:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 3157 transitions. [2021-11-20 23:14:53,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 23:14:53,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:53,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 23:14:53,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:14:53,325 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)] === [2021-11-20 23:14:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:53,329 INFO L85 PathProgramCache]: Analyzing trace with hash -368069748, now seen corresponding path program 1 times [2021-11-20 23:14:53,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:53,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093045479] [2021-11-20 23:14:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:53,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:53,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:53,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093045479] [2021-11-20 23:14:53,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093045479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:53,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:53,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:53,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517176392] [2021-11-20 23:14:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:53,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:53,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:53,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:53,544 INFO L87 Difference]: Start difference. First operand 1412 states and 3157 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) [2021-11-20 23:14:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:53,900 INFO L93 Difference]: Finished difference Result 2647 states and 5928 transitions. [2021-11-20 23:14:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:53,901 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 [2021-11-20 23:14:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:53,925 INFO L225 Difference]: With dead ends: 2647 [2021-11-20 23:14:53,925 INFO L226 Difference]: Without dead ends: 2647 [2021-11-20 23:14:53,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:53,927 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 94 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:53,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 46 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:14:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2021-11-20 23:14:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 1431. [2021-11-20 23:14:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1421 states have (on average 2.2498240675580576) internal successors, (3197), 1430 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 3197 transitions. [2021-11-20 23:14:54,003 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 3197 transitions. Word has length 6 [2021-11-20 23:14:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:54,004 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 3197 transitions. [2021-11-20 23:14:54,004 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) [2021-11-20 23:14:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 3197 transitions. [2021-11-20 23:14:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:14:54,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:54,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:54,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:14:54,006 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)] === [2021-11-20 23:14:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:54,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1476874622, now seen corresponding path program 1 times [2021-11-20 23:14:54,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:54,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647165412] [2021-11-20 23:14:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:54,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:54,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:54,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647165412] [2021-11-20 23:14:54,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647165412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:54,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:54,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:54,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487247100] [2021-11-20 23:14:54,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:54,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:54,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:54,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:54,103 INFO L87 Difference]: Start difference. First operand 1431 states and 3197 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) [2021-11-20 23:14:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:54,399 INFO L93 Difference]: Finished difference Result 1431 states and 3178 transitions. [2021-11-20 23:14:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:54,400 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 [2021-11-20 23:14:54,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:54,412 INFO L225 Difference]: With dead ends: 1431 [2021-11-20 23:14:54,412 INFO L226 Difference]: Without dead ends: 1431 [2021-11-20 23:14:54,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:54,417 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 107 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:54,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 29 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:14:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-11-20 23:14:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1431. [2021-11-20 23:14:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1421 states have (on average 2.2364532019704435) internal successors, (3178), 1430 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 3178 transitions. [2021-11-20 23:14:54,481 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 3178 transitions. Word has length 7 [2021-11-20 23:14:54,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:54,481 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 3178 transitions. [2021-11-20 23:14:54,482 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) [2021-11-20 23:14:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 3178 transitions. [2021-11-20 23:14:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:14:54,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:54,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:54,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:14:54,487 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)] === [2021-11-20 23:14:54,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1453226834, now seen corresponding path program 1 times [2021-11-20 23:14:54,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:54,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995691124] [2021-11-20 23:14:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:54,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:54,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:54,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995691124] [2021-11-20 23:14:54,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995691124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:54,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:54,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:14:54,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040744526] [2021-11-20 23:14:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:54,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:14:54,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:54,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:14:54,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:14:54,743 INFO L87 Difference]: Start difference. First operand 1431 states and 3178 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) [2021-11-20 23:14:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:55,473 INFO L93 Difference]: Finished difference Result 1817 states and 4039 transitions. [2021-11-20 23:14:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:14:55,474 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 [2021-11-20 23:14:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:55,487 INFO L225 Difference]: With dead ends: 1817 [2021-11-20 23:14:55,488 INFO L226 Difference]: Without dead ends: 1817 [2021-11-20 23:14:55,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:14:55,492 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 127 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:55,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 25 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:14:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2021-11-20 23:14:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1538. [2021-11-20 23:14:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1528 states have (on average 2.240183246073298) internal successors, (3423), 1537 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 3423 transitions. [2021-11-20 23:14:55,551 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 3423 transitions. Word has length 8 [2021-11-20 23:14:55,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:55,552 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 3423 transitions. [2021-11-20 23:14:55,552 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) [2021-11-20 23:14:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 3423 transitions. [2021-11-20 23:14:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 23:14:55,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:55,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:55,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:14:55,558 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)] === [2021-11-20 23:14:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash -686313702, now seen corresponding path program 1 times [2021-11-20 23:14:55,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:55,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970513710] [2021-11-20 23:14:55,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:55,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:55,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:55,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970513710] [2021-11-20 23:14:55,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970513710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:55,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:55,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:14:55,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889123863] [2021-11-20 23:14:55,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:55,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:55,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:55,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:55,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:55,680 INFO L87 Difference]: Start difference. First operand 1538 states and 3423 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) [2021-11-20 23:14:55,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:55,959 INFO L93 Difference]: Finished difference Result 1557 states and 3463 transitions. [2021-11-20 23:14:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:55,960 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 [2021-11-20 23:14:55,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:55,971 INFO L225 Difference]: With dead ends: 1557 [2021-11-20 23:14:55,972 INFO L226 Difference]: Without dead ends: 1557 [2021-11-20 23:14:55,972 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 [2021-11-20 23:14:55,974 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:55,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:14:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2021-11-20 23:14:56,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1557. [2021-11-20 23:14:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1547 states have (on average 2.2385261797026503) internal successors, (3463), 1556 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 3463 transitions. [2021-11-20 23:14:56,079 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 3463 transitions. Word has length 10 [2021-11-20 23:14:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:56,079 INFO L470 AbstractCegarLoop]: Abstraction has 1557 states and 3463 transitions. [2021-11-20 23:14:56,079 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) [2021-11-20 23:14:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 3463 transitions. [2021-11-20 23:14:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:14:56,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:56,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:56,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:14:56,088 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)] === [2021-11-20 23:14:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:56,090 INFO L85 PathProgramCache]: Analyzing trace with hash 987595614, now seen corresponding path program 1 times [2021-11-20 23:14:56,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:56,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291458238] [2021-11-20 23:14:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:56,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:56,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:56,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291458238] [2021-11-20 23:14:56,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291458238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:56,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:56,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:14:56,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917048337] [2021-11-20 23:14:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:56,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:14:56,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:14:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:14:56,334 INFO L87 Difference]: Start difference. First operand 1557 states and 3463 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) [2021-11-20 23:14:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:58,789 INFO L93 Difference]: Finished difference Result 2206 states and 4906 transitions. [2021-11-20 23:14:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:14:58,789 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 [2021-11-20 23:14:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:58,812 INFO L225 Difference]: With dead ends: 2206 [2021-11-20 23:14:58,812 INFO L226 Difference]: Without dead ends: 2206 [2021-11-20 23:14:58,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=226, Invalid=476, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:14:58,815 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 441 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:58,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 30 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:14:58,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-11-20 23:14:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1571. [2021-11-20 23:14:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1561 states have (on average 2.238949391415759) internal successors, (3495), 1570 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 3495 transitions. [2021-11-20 23:14:58,897 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 3495 transitions. Word has length 14 [2021-11-20 23:14:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:58,898 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 3495 transitions. [2021-11-20 23:14:58,899 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) [2021-11-20 23:14:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 3495 transitions. [2021-11-20 23:14:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:14:58,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:58,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:58,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:14:58,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:14:58,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash 85567050, now seen corresponding path program 2 times [2021-11-20 23:14:58,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:58,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404839317] [2021-11-20 23:14:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:58,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:59,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:59,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404839317] [2021-11-20 23:14:59,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404839317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:59,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:59,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:14:59,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173346785] [2021-11-20 23:14:59,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:59,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:14:59,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:59,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:14:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:14:59,144 INFO L87 Difference]: Start difference. First operand 1571 states and 3495 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2021-11-20 23:15:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:01,092 INFO L93 Difference]: Finished difference Result 1981 states and 4388 transitions. [2021-11-20 23:15:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 23:15:01,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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 [2021-11-20 23:15:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:01,115 INFO L225 Difference]: With dead ends: 1981 [2021-11-20 23:15:01,115 INFO L226 Difference]: Without dead ends: 1981 [2021-11-20 23:15:01,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2021-11-20 23:15:01,117 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 469 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:01,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 26 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:15:01,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-11-20 23:15:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1566. [2021-11-20 23:15:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1556 states have (on average 2.238431876606684) internal successors, (3483), 1565 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 3483 transitions. [2021-11-20 23:15:01,190 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 3483 transitions. Word has length 14 [2021-11-20 23:15:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:01,191 INFO L470 AbstractCegarLoop]: Abstraction has 1566 states and 3483 transitions. [2021-11-20 23:15:01,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2021-11-20 23:15:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 3483 transitions. [2021-11-20 23:15:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:15:01,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:01,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:01,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:15:01,194 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:15:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1767664317, now seen corresponding path program 1 times [2021-11-20 23:15:01,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071307895] [2021-11-20 23:15:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:01,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:01,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071307895] [2021-11-20 23:15:01,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071307895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:01,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:01,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:15:01,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128211651] [2021-11-20 23:15:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:01,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:15:01,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:15:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:15:01,446 INFO L87 Difference]: Start difference. First operand 1566 states and 3483 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 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) [2021-11-20 23:15:02,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:02,528 INFO L93 Difference]: Finished difference Result 2142 states and 4716 transitions. [2021-11-20 23:15:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:15:02,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 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 [2021-11-20 23:15:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:02,547 INFO L225 Difference]: With dead ends: 2142 [2021-11-20 23:15:02,548 INFO L226 Difference]: Without dead ends: 2085 [2021-11-20 23:15:02,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:02,549 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 225 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:02,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 28 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:15:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2021-11-20 23:15:02,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1616. [2021-11-20 23:15:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1606 states have (on average 2.240348692403487) internal successors, (3598), 1615 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 3598 transitions. [2021-11-20 23:15:02,615 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 3598 transitions. Word has length 14 [2021-11-20 23:15:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:02,616 INFO L470 AbstractCegarLoop]: Abstraction has 1616 states and 3598 transitions. [2021-11-20 23:15:02,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 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) [2021-11-20 23:15:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 3598 transitions. [2021-11-20 23:15:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:02,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:02,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:02,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:15:02,619 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)] === [2021-11-20 23:15:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash -592122702, now seen corresponding path program 1 times [2021-11-20 23:15:02,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:02,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623288047] [2021-11-20 23:15:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:02,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:02,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:02,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623288047] [2021-11-20 23:15:02,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623288047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:02,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:02,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:15:02,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989529117] [2021-11-20 23:15:02,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:02,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:15:02,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:15:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:15:02,926 INFO L87 Difference]: Start difference. First operand 1616 states and 3598 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) [2021-11-20 23:15:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:03,908 INFO L93 Difference]: Finished difference Result 2133 states and 4745 transitions. [2021-11-20 23:15:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:15:03,909 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 [2021-11-20 23:15:03,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:03,922 INFO L225 Difference]: With dead ends: 2133 [2021-11-20 23:15:03,923 INFO L226 Difference]: Without dead ends: 2133 [2021-11-20 23:15:03,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:15:03,924 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 203 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:03,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 17 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:15:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-11-20 23:15:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1679. [2021-11-20 23:15:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1669 states have (on average 2.2408627920910726) internal successors, (3740), 1678 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 3740 transitions. [2021-11-20 23:15:03,999 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 3740 transitions. Word has length 15 [2021-11-20 23:15:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:03,999 INFO L470 AbstractCegarLoop]: Abstraction has 1679 states and 3740 transitions. [2021-11-20 23:15:04,000 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) [2021-11-20 23:15:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 3740 transitions. [2021-11-20 23:15:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:04,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:04,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:04,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:15:04,002 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)] === [2021-11-20 23:15:04,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:04,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1884536264, now seen corresponding path program 2 times [2021-11-20 23:15:04,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:04,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569897283] [2021-11-20 23:15:04,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:04,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:04,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:04,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569897283] [2021-11-20 23:15:04,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569897283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:04,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:04,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:04,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385812556] [2021-11-20 23:15:04,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:04,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:04,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:04,585 INFO L87 Difference]: Start difference. First operand 1679 states and 3740 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) [2021-11-20 23:15:06,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:06,963 INFO L93 Difference]: Finished difference Result 2353 states and 5217 transitions. [2021-11-20 23:15:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 23:15:06,963 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 [2021-11-20 23:15:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:06,981 INFO L225 Difference]: With dead ends: 2353 [2021-11-20 23:15:06,981 INFO L226 Difference]: Without dead ends: 2353 [2021-11-20 23:15:06,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2021-11-20 23:15:06,983 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 419 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:06,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 30 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:15:06,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-20 23:15:07,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1695. [2021-11-20 23:15:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1685 states have (on average 2.2421364985163206) internal successors, (3778), 1694 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 3778 transitions. [2021-11-20 23:15:07,057 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 3778 transitions. Word has length 15 [2021-11-20 23:15:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:07,058 INFO L470 AbstractCegarLoop]: Abstraction has 1695 states and 3778 transitions. [2021-11-20 23:15:07,058 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) [2021-11-20 23:15:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 3778 transitions. [2021-11-20 23:15:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:07,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:07,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:07,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:15:07,060 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)] === [2021-11-20 23:15:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1338192741, now seen corresponding path program 1 times [2021-11-20 23:15:07,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:07,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675017957] [2021-11-20 23:15:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:07,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:07,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:07,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675017957] [2021-11-20 23:15:07,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675017957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:07,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:07,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:15:07,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894342933] [2021-11-20 23:15:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:07,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:15:07,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:15:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:15:07,320 INFO L87 Difference]: Start difference. First operand 1695 states and 3778 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-20 23:15:09,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:09,520 INFO L93 Difference]: Finished difference Result 2369 states and 5251 transitions. [2021-11-20 23:15:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 23:15:09,521 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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 [2021-11-20 23:15:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:09,529 INFO L225 Difference]: With dead ends: 2369 [2021-11-20 23:15:09,530 INFO L226 Difference]: Without dead ends: 2369 [2021-11-20 23:15:09,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=271, Invalid=659, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:15:09,531 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 452 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:09,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 36 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:15:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2021-11-20 23:15:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1733. [2021-11-20 23:15:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1723 states have (on average 2.2426001160766105) internal successors, (3864), 1732 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 3864 transitions. [2021-11-20 23:15:09,589 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 3864 transitions. Word has length 15 [2021-11-20 23:15:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:09,589 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 3864 transitions. [2021-11-20 23:15:09,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-20 23:15:09,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 3864 transitions. [2021-11-20 23:15:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:09,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:09,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:09,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:15:09,592 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)] === [2021-11-20 23:15:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:09,593 INFO L85 PathProgramCache]: Analyzing trace with hash -420856288, now seen corresponding path program 3 times [2021-11-20 23:15:09,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:09,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938294705] [2021-11-20 23:15:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:09,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:09,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:09,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938294705] [2021-11-20 23:15:09,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938294705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:09,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:09,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:09,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431858471] [2021-11-20 23:15:09,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:09,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:09,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:09,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:09,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:09,946 INFO L87 Difference]: Start difference. First operand 1733 states and 3864 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) [2021-11-20 23:15:13,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:13,633 INFO L93 Difference]: Finished difference Result 2357 states and 5233 transitions. [2021-11-20 23:15:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:15:13,636 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 [2021-11-20 23:15:13,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:13,644 INFO L225 Difference]: With dead ends: 2357 [2021-11-20 23:15:13,644 INFO L226 Difference]: Without dead ends: 2357 [2021-11-20 23:15:13,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=402, Invalid=1158, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:15:13,646 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 550 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:13,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 35 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2900 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:15:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2021-11-20 23:15:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1747. [2021-11-20 23:15:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1737 states have (on average 2.2417962003454233) internal successors, (3894), 1746 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 3894 transitions. [2021-11-20 23:15:13,715 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 3894 transitions. Word has length 15 [2021-11-20 23:15:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:13,715 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 3894 transitions. [2021-11-20 23:15:13,716 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) [2021-11-20 23:15:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 3894 transitions. [2021-11-20 23:15:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:13,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:13,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:13,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:15:13,718 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)] === [2021-11-20 23:15:13,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash -952372931, now seen corresponding path program 2 times [2021-11-20 23:15:13,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:13,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558660762] [2021-11-20 23:15:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:13,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:13,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:13,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558660762] [2021-11-20 23:15:13,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558660762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:13,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:13,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:15:13,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507387906] [2021-11-20 23:15:13,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:13,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:15:13,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:13,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:15:13,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:15:13,963 INFO L87 Difference]: Start difference. First operand 1747 states and 3894 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-20 23:15:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:18,240 INFO L93 Difference]: Finished difference Result 2864 states and 6320 transitions. [2021-11-20 23:15:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:15:18,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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 [2021-11-20 23:15:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:18,248 INFO L225 Difference]: With dead ends: 2864 [2021-11-20 23:15:18,249 INFO L226 Difference]: Without dead ends: 2864 [2021-11-20 23:15:18,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=606, Invalid=1650, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:15:18,251 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 772 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 3622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:18,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 36 Invalid, 3622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 23:15:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2021-11-20 23:15:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1772. [2021-11-20 23:15:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1762 states have (on average 2.242338251986379) internal successors, (3951), 1771 states have internal predecessors, (3951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 3951 transitions. [2021-11-20 23:15:18,351 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 3951 transitions. Word has length 15 [2021-11-20 23:15:18,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:18,352 INFO L470 AbstractCegarLoop]: Abstraction has 1772 states and 3951 transitions. [2021-11-20 23:15:18,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-20 23:15:18,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 3951 transitions. [2021-11-20 23:15:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:18,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:18,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:18,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:15:18,355 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)] === [2021-11-20 23:15:18,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:18,355 INFO L85 PathProgramCache]: Analyzing trace with hash 646816838, now seen corresponding path program 4 times [2021-11-20 23:15:18,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:18,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837995695] [2021-11-20 23:15:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:18,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:18,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:18,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837995695] [2021-11-20 23:15:18,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837995695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:18,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:18,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:15:18,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176551833] [2021-11-20 23:15:18,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:18,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:15:18,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:18,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:15:18,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:15:18,875 INFO L87 Difference]: Start difference. First operand 1772 states and 3951 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-20 23:15:23,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:23,522 INFO L93 Difference]: Finished difference Result 2255 states and 5001 transitions. [2021-11-20 23:15:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:15:23,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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 [2021-11-20 23:15:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:23,531 INFO L225 Difference]: With dead ends: 2255 [2021-11-20 23:15:23,531 INFO L226 Difference]: Without dead ends: 2255 [2021-11-20 23:15:23,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=473, Invalid=1333, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:15:23,533 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 565 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 2961 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:23,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 35 Invalid, 3014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2961 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:15:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-11-20 23:15:23,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1765. [2021-11-20 23:15:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1755 states have (on average 2.2427350427350428) internal successors, (3936), 1764 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 3936 transitions. [2021-11-20 23:15:23,629 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 3936 transitions. Word has length 15 [2021-11-20 23:15:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:23,629 INFO L470 AbstractCegarLoop]: Abstraction has 1765 states and 3936 transitions. [2021-11-20 23:15:23,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-20 23:15:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 3936 transitions. [2021-11-20 23:15:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:23,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:23,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:23,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:15:23,632 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)] === [2021-11-20 23:15:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1916166736, now seen corresponding path program 5 times [2021-11-20 23:15:23,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:23,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658504813] [2021-11-20 23:15:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:23,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:23,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:23,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658504813] [2021-11-20 23:15:23,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658504813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:23,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:23,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:23,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733545155] [2021-11-20 23:15:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:23,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:23,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:23,978 INFO L87 Difference]: Start difference. First operand 1765 states and 3936 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) [2021-11-20 23:15:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:27,949 INFO L93 Difference]: Finished difference Result 2247 states and 4983 transitions. [2021-11-20 23:15:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:15:27,951 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 [2021-11-20 23:15:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:27,958 INFO L225 Difference]: With dead ends: 2247 [2021-11-20 23:15:27,958 INFO L226 Difference]: Without dead ends: 2247 [2021-11-20 23:15:27,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=499, Invalid=1481, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:15:27,960 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 619 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:27,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 33 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:15:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2021-11-20 23:15:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1769. [2021-11-20 23:15:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1759 states have (on average 2.2421830585559976) internal successors, (3944), 1768 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:28,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 3944 transitions. [2021-11-20 23:15:28,023 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 3944 transitions. Word has length 15 [2021-11-20 23:15:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:28,023 INFO L470 AbstractCegarLoop]: Abstraction has 1769 states and 3944 transitions. [2021-11-20 23:15:28,024 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) [2021-11-20 23:15:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 3944 transitions. [2021-11-20 23:15:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:28,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:28,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:28,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:15:28,026 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)] === [2021-11-20 23:15:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1909588788, now seen corresponding path program 6 times [2021-11-20 23:15:28,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:28,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20136309] [2021-11-20 23:15:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:28,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:28,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:28,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20136309] [2021-11-20 23:15:28,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20136309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:28,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:28,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:15:28,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725675079] [2021-11-20 23:15:28,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:28,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:15:28,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:28,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:15:28,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:15:28,599 INFO L87 Difference]: Start difference. First operand 1769 states and 3944 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-20 23:15:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:32,718 INFO L93 Difference]: Finished difference Result 2254 states and 4998 transitions. [2021-11-20 23:15:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:15:32,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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 [2021-11-20 23:15:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:32,724 INFO L225 Difference]: With dead ends: 2254 [2021-11-20 23:15:32,725 INFO L226 Difference]: Without dead ends: 2254 [2021-11-20 23:15:32,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=503, Invalid=1567, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:15:32,727 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 538 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:32,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 37 Invalid, 3441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:15:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2021-11-20 23:15:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1760. [2021-11-20 23:15:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1750 states have (on average 2.2417142857142855) internal successors, (3923), 1759 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 3923 transitions. [2021-11-20 23:15:32,787 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 3923 transitions. Word has length 15 [2021-11-20 23:15:32,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:32,788 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 3923 transitions. [2021-11-20 23:15:32,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-20 23:15:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 3923 transitions. [2021-11-20 23:15:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:32,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:32,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:32,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:15:32,790 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)] === [2021-11-20 23:15:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1835759261, now seen corresponding path program 3 times [2021-11-20 23:15:32,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589198571] [2021-11-20 23:15:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:32,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:32,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:32,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589198571] [2021-11-20 23:15:32,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589198571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:32,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:32,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:32,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631953386] [2021-11-20 23:15:32,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:32,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:32,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:32,996 INFO L87 Difference]: Start difference. First operand 1760 states and 3923 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) [2021-11-20 23:15:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:35,172 INFO L93 Difference]: Finished difference Result 2359 states and 5219 transitions. [2021-11-20 23:15:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:15:35,173 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 [2021-11-20 23:15:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:35,179 INFO L225 Difference]: With dead ends: 2359 [2021-11-20 23:15:35,180 INFO L226 Difference]: Without dead ends: 2359 [2021-11-20 23:15:35,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:15:35,181 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 858 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:35,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 26 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:15:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-20 23:15:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1753. [2021-11-20 23:15:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1743 states have (on average 2.2421113023522663) internal successors, (3908), 1752 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 3908 transitions. [2021-11-20 23:15:35,238 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 3908 transitions. Word has length 15 [2021-11-20 23:15:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:35,238 INFO L470 AbstractCegarLoop]: Abstraction has 1753 states and 3908 transitions. [2021-11-20 23:15:35,238 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) [2021-11-20 23:15:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 3908 transitions. [2021-11-20 23:15:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:35,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:35,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:35,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:15:35,241 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)] === [2021-11-20 23:15:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1012811547, now seen corresponding path program 4 times [2021-11-20 23:15:35,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:35,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103162187] [2021-11-20 23:15:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:35,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:35,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:35,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103162187] [2021-11-20 23:15:35,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103162187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:35,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:35,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:35,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054041053] [2021-11-20 23:15:35,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:35,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:35,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:35,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:35,439 INFO L87 Difference]: Start difference. First operand 1753 states and 3908 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) [2021-11-20 23:15:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:37,293 INFO L93 Difference]: Finished difference Result 2348 states and 5194 transitions. [2021-11-20 23:15:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:15:37,293 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 [2021-11-20 23:15:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:37,300 INFO L225 Difference]: With dead ends: 2348 [2021-11-20 23:15:37,301 INFO L226 Difference]: Without dead ends: 2348 [2021-11-20 23:15:37,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2021-11-20 23:15:37,302 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 510 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:37,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 28 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:15:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2021-11-20 23:15:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 1752. [2021-11-20 23:15:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1742 states have (on average 2.241102181400689) internal successors, (3904), 1751 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 3904 transitions. [2021-11-20 23:15:37,358 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 3904 transitions. Word has length 15 [2021-11-20 23:15:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:37,359 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 3904 transitions. [2021-11-20 23:15:37,359 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) [2021-11-20 23:15:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 3904 transitions. [2021-11-20 23:15:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:37,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:37,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:37,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 23:15:37,362 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)] === [2021-11-20 23:15:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash 75053068, now seen corresponding path program 7 times [2021-11-20 23:15:37,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:37,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392482152] [2021-11-20 23:15:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:37,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:37,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392482152] [2021-11-20 23:15:37,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392482152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:37,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:37,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:15:37,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253170073] [2021-11-20 23:15:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:37,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:15:37,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:15:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:15:37,577 INFO L87 Difference]: Start difference. First operand 1752 states and 3904 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2021-11-20 23:15:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:38,452 INFO L93 Difference]: Finished difference Result 2344 states and 5208 transitions. [2021-11-20 23:15:38,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:15:38,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 [2021-11-20 23:15:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:38,473 INFO L225 Difference]: With dead ends: 2344 [2021-11-20 23:15:38,474 INFO L226 Difference]: Without dead ends: 2344 [2021-11-20 23:15:38,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:15:38,475 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 162 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:38,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 17 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:15:38,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-11-20 23:15:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1818. [2021-11-20 23:15:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1808 states have (on average 2.2411504424778763) internal successors, (4052), 1817 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 4052 transitions. [2021-11-20 23:15:38,527 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 4052 transitions. Word has length 15 [2021-11-20 23:15:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:38,527 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 4052 transitions. [2021-11-20 23:15:38,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2021-11-20 23:15:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 4052 transitions. [2021-11-20 23:15:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:38,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:38,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:38,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 23:15:38,530 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)] === [2021-11-20 23:15:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:38,531 INFO L85 PathProgramCache]: Analyzing trace with hash 940771076, now seen corresponding path program 8 times [2021-11-20 23:15:38,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:38,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724483797] [2021-11-20 23:15:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:38,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:39,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:39,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724483797] [2021-11-20 23:15:39,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724483797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:39,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:39,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:39,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276165563] [2021-11-20 23:15:39,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:39,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:39,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:39,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:39,146 INFO L87 Difference]: Start difference. First operand 1818 states and 4052 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) [2021-11-20 23:15:41,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:41,243 INFO L93 Difference]: Finished difference Result 2663 states and 5897 transitions. [2021-11-20 23:15:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 23:15:41,244 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 [2021-11-20 23:15:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:41,248 INFO L225 Difference]: With dead ends: 2663 [2021-11-20 23:15:41,248 INFO L226 Difference]: Without dead ends: 2663 [2021-11-20 23:15:41,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:15:41,249 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 382 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:41,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 30 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:15:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-11-20 23:15:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 1820. [2021-11-20 23:15:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1810 states have (on average 2.241988950276243) internal successors, (4058), 1819 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 4058 transitions. [2021-11-20 23:15:41,305 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 4058 transitions. Word has length 15 [2021-11-20 23:15:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:41,306 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 4058 transitions. [2021-11-20 23:15:41,306 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) [2021-11-20 23:15:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 4058 transitions. [2021-11-20 23:15:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:41,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:41,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:41,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 23:15:41,309 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)] === [2021-11-20 23:15:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1361995700, now seen corresponding path program 9 times [2021-11-20 23:15:41,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:41,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083345044] [2021-11-20 23:15:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:41,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:41,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:41,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083345044] [2021-11-20 23:15:41,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083345044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:41,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:41,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:41,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367121693] [2021-11-20 23:15:41,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:41,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:41,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:41,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:41,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:41,691 INFO L87 Difference]: Start difference. First operand 1820 states and 4058 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) [2021-11-20 23:15:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:45,347 INFO L93 Difference]: Finished difference Result 2667 states and 5915 transitions. [2021-11-20 23:15:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:15:45,348 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 [2021-11-20 23:15:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:45,352 INFO L225 Difference]: With dead ends: 2667 [2021-11-20 23:15:45,352 INFO L226 Difference]: Without dead ends: 2667 [2021-11-20 23:15:45,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=416, Invalid=1066, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 23:15:45,353 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 573 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:45,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 29 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2760 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:15:45,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2021-11-20 23:15:45,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 1797. [2021-11-20 23:15:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1787 states have (on average 2.2423055400111918) internal successors, (4007), 1796 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 4007 transitions. [2021-11-20 23:15:45,406 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 4007 transitions. Word has length 15 [2021-11-20 23:15:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:45,406 INFO L470 AbstractCegarLoop]: Abstraction has 1797 states and 4007 transitions. [2021-11-20 23:15:45,406 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) [2021-11-20 23:15:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 4007 transitions. [2021-11-20 23:15:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:45,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:45,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:45,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 23:15:45,409 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)] === [2021-11-20 23:15:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1172369940, now seen corresponding path program 10 times [2021-11-20 23:15:45,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:45,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011514037] [2021-11-20 23:15:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:45,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:45,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:45,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011514037] [2021-11-20 23:15:45,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011514037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:45,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:45,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:15:45,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597678511] [2021-11-20 23:15:45,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:45,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:15:45,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:15:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:15:45,588 INFO L87 Difference]: Start difference. First operand 1797 states and 4007 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2021-11-20 23:15:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:46,340 INFO L93 Difference]: Finished difference Result 2103 states and 4649 transitions. [2021-11-20 23:15:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:15:46,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 [2021-11-20 23:15:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:46,343 INFO L225 Difference]: With dead ends: 2103 [2021-11-20 23:15:46,343 INFO L226 Difference]: Without dead ends: 2103 [2021-11-20 23:15:46,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:15:46,345 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 163 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:46,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 22 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:15:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2021-11-20 23:15:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 1717. [2021-11-20 23:15:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1707 states have (on average 2.239601640304628) internal successors, (3823), 1716 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 3823 transitions. [2021-11-20 23:15:46,393 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 3823 transitions. Word has length 15 [2021-11-20 23:15:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:46,393 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 3823 transitions. [2021-11-20 23:15:46,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2021-11-20 23:15:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 3823 transitions. [2021-11-20 23:15:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:46,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:46,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 23:15:46,396 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)] === [2021-11-20 23:15:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2038087948, now seen corresponding path program 11 times [2021-11-20 23:15:46,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:46,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345550391] [2021-11-20 23:15:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:46,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:47,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:47,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345550391] [2021-11-20 23:15:47,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345550391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:47,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:47,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:47,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798437150] [2021-11-20 23:15:47,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:47,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:47,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:47,025 INFO L87 Difference]: Start difference. First operand 1717 states and 3823 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) [2021-11-20 23:15:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:48,863 INFO L93 Difference]: Finished difference Result 2332 states and 5154 transitions. [2021-11-20 23:15:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:15:48,864 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 [2021-11-20 23:15:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:48,869 INFO L225 Difference]: With dead ends: 2332 [2021-11-20 23:15:48,869 INFO L226 Difference]: Without dead ends: 2332 [2021-11-20 23:15:48,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2021-11-20 23:15:48,871 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 276 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:48,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 29 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:15:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2021-11-20 23:15:48,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 1719. [2021-11-20 23:15:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1709 states have (on average 2.240491515506144) internal successors, (3829), 1718 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 3829 transitions. [2021-11-20 23:15:48,923 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 3829 transitions. Word has length 15 [2021-11-20 23:15:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:48,925 INFO L470 AbstractCegarLoop]: Abstraction has 1719 states and 3829 transitions. [2021-11-20 23:15:48,925 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) [2021-11-20 23:15:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 3829 transitions. [2021-11-20 23:15:48,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:15:48,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:48,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:48,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 23:15:48,928 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)] === [2021-11-20 23:15:48,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1715211040, now seen corresponding path program 12 times [2021-11-20 23:15:48,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:48,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852835487] [2021-11-20 23:15:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:48,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:49,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:49,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852835487] [2021-11-20 23:15:49,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852835487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:49,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:49,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:49,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85113253] [2021-11-20 23:15:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:49,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:49,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:49,294 INFO L87 Difference]: Start difference. First operand 1719 states and 3829 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) [2021-11-20 23:15:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:52,660 INFO L93 Difference]: Finished difference Result 2383 states and 5264 transitions. [2021-11-20 23:15:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 23:15:52,660 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 [2021-11-20 23:15:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:52,663 INFO L225 Difference]: With dead ends: 2383 [2021-11-20 23:15:52,664 INFO L226 Difference]: Without dead ends: 2383 [2021-11-20 23:15:52,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=332, Invalid=858, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:15:52,665 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 515 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:52,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 39 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:15:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2021-11-20 23:15:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 1675. [2021-11-20 23:15:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1665 states have (on average 2.2336336336336338) internal successors, (3719), 1674 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 3719 transitions. [2021-11-20 23:15:52,706 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 3719 transitions. Word has length 15 [2021-11-20 23:15:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:52,707 INFO L470 AbstractCegarLoop]: Abstraction has 1675 states and 3719 transitions. [2021-11-20 23:15:52,707 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) [2021-11-20 23:15:52,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 3719 transitions. [2021-11-20 23:15:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:15:52,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:52,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:52,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 23:15:52,709 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)] === [2021-11-20 23:15:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1155740671, now seen corresponding path program 1 times [2021-11-20 23:15:52,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:52,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735468279] [2021-11-20 23:15:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:52,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:52,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:52,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735468279] [2021-11-20 23:15:52,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735468279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:52,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:52,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:15:52,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223980834] [2021-11-20 23:15:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:52,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:15:52,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:15:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:15:52,965 INFO L87 Difference]: Start difference. First operand 1675 states and 3719 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) [2021-11-20 23:15:55,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:55,140 INFO L93 Difference]: Finished difference Result 2796 states and 6154 transitions. [2021-11-20 23:15:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 23:15:55,140 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 [2021-11-20 23:15:55,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:55,144 INFO L225 Difference]: With dead ends: 2796 [2021-11-20 23:15:55,144 INFO L226 Difference]: Without dead ends: 2796 [2021-11-20 23:15:55,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=367, Invalid=893, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 23:15:55,145 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 899 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:55,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 26 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:15:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2021-11-20 23:15:55,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 1645. [2021-11-20 23:15:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1635 states have (on average 2.230581039755352) internal successors, (3647), 1644 states have internal predecessors, (3647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 3647 transitions. [2021-11-20 23:15:55,187 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 3647 transitions. Word has length 16 [2021-11-20 23:15:55,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:55,187 INFO L470 AbstractCegarLoop]: Abstraction has 1645 states and 3647 transitions. [2021-11-20 23:15:55,187 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) [2021-11-20 23:15:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 3647 transitions. [2021-11-20 23:15:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:15:55,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:55,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:55,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 23:15:55,189 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)] === [2021-11-20 23:15:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1524054171, now seen corresponding path program 2 times [2021-11-20 23:15:55,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:55,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300878255] [2021-11-20 23:15:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:55,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:55,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:55,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300878255] [2021-11-20 23:15:55,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300878255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:55,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:55,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:15:55,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729227752] [2021-11-20 23:15:55,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:55,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:15:55,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:15:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:15:55,370 INFO L87 Difference]: Start difference. First operand 1645 states and 3647 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) [2021-11-20 23:15:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:57,030 INFO L93 Difference]: Finished difference Result 2293 states and 5043 transitions. [2021-11-20 23:15:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 23:15:57,030 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 [2021-11-20 23:15:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:57,033 INFO L225 Difference]: With dead ends: 2293 [2021-11-20 23:15:57,034 INFO L226 Difference]: Without dead ends: 2293 [2021-11-20 23:15:57,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=334, Invalid=856, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:15:57,035 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 814 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:57,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 22 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:15:57,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2021-11-20 23:15:57,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1630. [2021-11-20 23:15:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1620 states have (on average 2.2302469135802467) internal successors, (3613), 1629 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:15:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 3613 transitions. [2021-11-20 23:15:57,080 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 3613 transitions. Word has length 16 [2021-11-20 23:15:57,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:57,080 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 3613 transitions. [2021-11-20 23:15:57,081 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) [2021-11-20 23:15:57,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 3613 transitions. [2021-11-20 23:15:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:15:57,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:57,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:57,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 23:15:57,083 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)] === [2021-11-20 23:15:57,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1832548229, now seen corresponding path program 1 times [2021-11-20 23:15:57,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:57,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170032877] [2021-11-20 23:15:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:57,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:15:57,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:57,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170032877] [2021-11-20 23:15:57,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170032877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:57,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:57,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:15:57,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180702766] [2021-11-20 23:15:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:57,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:15:57,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:57,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:15:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:15:57,577 INFO L87 Difference]: Start difference. First operand 1630 states and 3613 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:01,500 INFO L93 Difference]: Finished difference Result 2687 states and 5986 transitions. [2021-11-20 23:16:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:16:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:01,505 INFO L225 Difference]: With dead ends: 2687 [2021-11-20 23:16:01,505 INFO L226 Difference]: Without dead ends: 2687 [2021-11-20 23:16:01,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:16:01,506 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 614 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 3142 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:01,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 41 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3142 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:16:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-11-20 23:16:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1759. [2021-11-20 23:16:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1749 states have (on average 2.2435677530017153) internal successors, (3924), 1758 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 3924 transitions. [2021-11-20 23:16:01,552 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 3924 transitions. Word has length 17 [2021-11-20 23:16:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:01,553 INFO L470 AbstractCegarLoop]: Abstraction has 1759 states and 3924 transitions. [2021-11-20 23:16:01,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 3924 transitions. [2021-11-20 23:16:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:01,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:01,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:01,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 23:16:01,556 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)] === [2021-11-20 23:16:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:01,556 INFO L85 PathProgramCache]: Analyzing trace with hash -73597283, now seen corresponding path program 2 times [2021-11-20 23:16:01,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:01,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830419397] [2021-11-20 23:16:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:01,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:02,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:02,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830419397] [2021-11-20 23:16:02,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830419397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:02,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:02,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:02,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645071708] [2021-11-20 23:16:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:02,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:02,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:02,083 INFO L87 Difference]: Start difference. First operand 1759 states and 3924 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:06,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:06,736 INFO L93 Difference]: Finished difference Result 2965 states and 6633 transitions. [2021-11-20 23:16:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 23:16:06,737 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:06,743 INFO L225 Difference]: With dead ends: 2965 [2021-11-20 23:16:06,744 INFO L226 Difference]: Without dead ends: 2965 [2021-11-20 23:16:06,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:16:06,746 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 638 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:06,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 47 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3626 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 23:16:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2021-11-20 23:16:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1760. [2021-11-20 23:16:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1750 states have (on average 2.2434285714285713) internal successors, (3926), 1759 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 3926 transitions. [2021-11-20 23:16:06,798 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 3926 transitions. Word has length 17 [2021-11-20 23:16:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:06,799 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 3926 transitions. [2021-11-20 23:16:06,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 3926 transitions. [2021-11-20 23:16:06,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:06,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:06,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:06,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 23:16:06,802 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)] === [2021-11-20 23:16:06,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1408466255, now seen corresponding path program 3 times [2021-11-20 23:16:06,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:06,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940569248] [2021-11-20 23:16:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:06,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:07,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:07,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940569248] [2021-11-20 23:16:07,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940569248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:07,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:07,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:07,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187126881] [2021-11-20 23:16:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:07,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:07,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:07,215 INFO L87 Difference]: Start difference. First operand 1760 states and 3926 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:11,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:11,471 INFO L93 Difference]: Finished difference Result 3066 states and 6865 transitions. [2021-11-20 23:16:11,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:16:11,471 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:11,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:11,475 INFO L225 Difference]: With dead ends: 3066 [2021-11-20 23:16:11,475 INFO L226 Difference]: Without dead ends: 3066 [2021-11-20 23:16:11,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=355, Invalid=1205, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:16:11,477 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 780 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:11,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 45 Invalid, 3418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:16:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-11-20 23:16:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 1756. [2021-11-20 23:16:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1746 states have (on average 2.243413516609393) internal successors, (3917), 1755 states have internal predecessors, (3917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 3917 transitions. [2021-11-20 23:16:11,517 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 3917 transitions. Word has length 17 [2021-11-20 23:16:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:11,517 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 3917 transitions. [2021-11-20 23:16:11,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 3917 transitions. [2021-11-20 23:16:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:11,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:11,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:11,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 23:16:11,519 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)] === [2021-11-20 23:16:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash -536906941, now seen corresponding path program 4 times [2021-11-20 23:16:11,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:11,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660932025] [2021-11-20 23:16:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:11,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:11,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:11,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660932025] [2021-11-20 23:16:11,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660932025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:11,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:11,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:11,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298873866] [2021-11-20 23:16:11,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:11,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:11,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:11,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:11,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:11,991 INFO L87 Difference]: Start difference. First operand 1756 states and 3917 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:16,266 INFO L93 Difference]: Finished difference Result 2683 states and 5984 transitions. [2021-11-20 23:16:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:16:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:16,270 INFO L225 Difference]: With dead ends: 2683 [2021-11-20 23:16:16,270 INFO L226 Difference]: Without dead ends: 2683 [2021-11-20 23:16:16,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:16:16,271 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 634 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:16,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 47 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:16:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-11-20 23:16:16,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 1757. [2021-11-20 23:16:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1747 states have (on average 2.24327418431597) internal successors, (3919), 1756 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 3919 transitions. [2021-11-20 23:16:16,320 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 3919 transitions. Word has length 17 [2021-11-20 23:16:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:16,320 INFO L470 AbstractCegarLoop]: Abstraction has 1757 states and 3919 transitions. [2021-11-20 23:16:16,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 3919 transitions. [2021-11-20 23:16:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:16,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:16,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:16,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 23:16:16,323 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)] === [2021-11-20 23:16:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash 945156597, now seen corresponding path program 5 times [2021-11-20 23:16:16,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:16,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85376531] [2021-11-20 23:16:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:16,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:16,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85376531] [2021-11-20 23:16:16,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85376531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:16,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:16,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:16:16,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284068270] [2021-11-20 23:16:16,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:16,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:16:16,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:16:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:16:16,935 INFO L87 Difference]: Start difference. First operand 1757 states and 3919 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) [2021-11-20 23:16:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:23,051 INFO L93 Difference]: Finished difference Result 3106 states and 6981 transitions. [2021-11-20 23:16:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:16:23,051 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 [2021-11-20 23:16:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:23,056 INFO L225 Difference]: With dead ends: 3106 [2021-11-20 23:16:23,056 INFO L226 Difference]: Without dead ends: 3106 [2021-11-20 23:16:23,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:16:23,058 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 681 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 4922 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 5002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:23,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 53 Invalid, 5002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4922 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 23:16:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2021-11-20 23:16:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1766. [2021-11-20 23:16:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1756 states have (on average 2.2437357630979498) internal successors, (3940), 1765 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 3940 transitions. [2021-11-20 23:16:23,092 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 3940 transitions. Word has length 17 [2021-11-20 23:16:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:23,092 INFO L470 AbstractCegarLoop]: Abstraction has 1766 states and 3940 transitions. [2021-11-20 23:16:23,092 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) [2021-11-20 23:16:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 3940 transitions. [2021-11-20 23:16:23,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:23,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:23,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:23,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 23:16:23,094 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)] === [2021-11-20 23:16:23,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:23,095 INFO L85 PathProgramCache]: Analyzing trace with hash 937920267, now seen corresponding path program 6 times [2021-11-20 23:16:23,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:23,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040907366] [2021-11-20 23:16:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:23,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:23,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040907366] [2021-11-20 23:16:23,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040907366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:23,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:23,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:16:23,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458957939] [2021-11-20 23:16:23,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:23,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:16:23,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:16:23,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:16:23,547 INFO L87 Difference]: Start difference. First operand 1766 states and 3940 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) [2021-11-20 23:16:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:28,266 INFO L93 Difference]: Finished difference Result 2764 states and 6181 transitions. [2021-11-20 23:16:28,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:16:28,267 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 [2021-11-20 23:16:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:28,270 INFO L225 Difference]: With dead ends: 2764 [2021-11-20 23:16:28,270 INFO L226 Difference]: Without dead ends: 2764 [2021-11-20 23:16:28,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:16:28,272 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 687 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 3557 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:28,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 47 Invalid, 3632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3557 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:16:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-11-20 23:16:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 1759. [2021-11-20 23:16:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1749 states have (on average 2.242995997712979) internal successors, (3923), 1758 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 3923 transitions. [2021-11-20 23:16:28,318 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 3923 transitions. Word has length 17 [2021-11-20 23:16:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:28,318 INFO L470 AbstractCegarLoop]: Abstraction has 1759 states and 3923 transitions. [2021-11-20 23:16:28,319 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) [2021-11-20 23:16:28,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 3923 transitions. [2021-11-20 23:16:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:28,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:28,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:28,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 23:16:28,321 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)] === [2021-11-20 23:16:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 366202415, now seen corresponding path program 7 times [2021-11-20 23:16:28,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:28,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448302926] [2021-11-20 23:16:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:28,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:28,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:28,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448302926] [2021-11-20 23:16:28,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448302926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:28,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:28,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:16:28,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488357737] [2021-11-20 23:16:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:28,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:16:28,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:16:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:16:28,779 INFO L87 Difference]: Start difference. First operand 1759 states and 3923 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) [2021-11-20 23:16:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:32,477 INFO L93 Difference]: Finished difference Result 2706 states and 6054 transitions. [2021-11-20 23:16:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 23:16:32,479 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 [2021-11-20 23:16:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:32,483 INFO L225 Difference]: With dead ends: 2706 [2021-11-20 23:16:32,483 INFO L226 Difference]: Without dead ends: 2706 [2021-11-20 23:16:32,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:16:32,484 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 549 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:32,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 45 Invalid, 3262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3223 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:16:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-11-20 23:16:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1756. [2021-11-20 23:16:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1746 states have (on average 2.243413516609393) internal successors, (3917), 1755 states have internal predecessors, (3917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 3917 transitions. [2021-11-20 23:16:32,533 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 3917 transitions. Word has length 17 [2021-11-20 23:16:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:32,533 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 3917 transitions. [2021-11-20 23:16:32,534 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) [2021-11-20 23:16:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 3917 transitions. [2021-11-20 23:16:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:32,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:32,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:32,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 23:16:32,536 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)] === [2021-11-20 23:16:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:32,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1500435709, now seen corresponding path program 8 times [2021-11-20 23:16:32,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:32,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082975722] [2021-11-20 23:16:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:32,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:33,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:33,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082975722] [2021-11-20 23:16:33,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082975722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:33,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:33,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:16:33,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610383837] [2021-11-20 23:16:33,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:33,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:16:33,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:16:33,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:16:33,023 INFO L87 Difference]: Start difference. First operand 1756 states and 3917 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) [2021-11-20 23:16:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:37,424 INFO L93 Difference]: Finished difference Result 2836 states and 6342 transitions. [2021-11-20 23:16:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:16:37,425 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 [2021-11-20 23:16:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:37,428 INFO L225 Difference]: With dead ends: 2836 [2021-11-20 23:16:37,428 INFO L226 Difference]: Without dead ends: 2836 [2021-11-20 23:16:37,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:16:37,429 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 720 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:37,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 47 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3644 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 23:16:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2021-11-20 23:16:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 1766. [2021-11-20 23:16:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1756 states have (on average 2.2431662870159452) internal successors, (3939), 1765 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 3939 transitions. [2021-11-20 23:16:37,478 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 3939 transitions. Word has length 17 [2021-11-20 23:16:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:37,478 INFO L470 AbstractCegarLoop]: Abstraction has 1766 states and 3939 transitions. [2021-11-20 23:16:37,478 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) [2021-11-20 23:16:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 3939 transitions. [2021-11-20 23:16:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:37,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:37,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:37,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-20 23:16:37,481 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)] === [2021-11-20 23:16:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:37,481 INFO L85 PathProgramCache]: Analyzing trace with hash 960643323, now seen corresponding path program 9 times [2021-11-20 23:16:37,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:37,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529548514] [2021-11-20 23:16:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:37,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:37,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:37,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529548514] [2021-11-20 23:16:37,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529548514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:37,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:37,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:37,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272521867] [2021-11-20 23:16:37,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:37,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:37,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:37,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:37,851 INFO L87 Difference]: Start difference. First operand 1766 states and 3939 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:41,581 INFO L93 Difference]: Finished difference Result 2966 states and 6662 transitions. [2021-11-20 23:16:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:16:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:41,586 INFO L225 Difference]: With dead ends: 2966 [2021-11-20 23:16:41,586 INFO L226 Difference]: Without dead ends: 2966 [2021-11-20 23:16:41,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=402, Invalid=1490, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 23:16:41,587 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 724 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 3792 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:41,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 47 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3792 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:16:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-11-20 23:16:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1766. [2021-11-20 23:16:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1756 states have (on average 2.2431662870159452) internal successors, (3939), 1765 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 3939 transitions. [2021-11-20 23:16:41,614 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 3939 transitions. Word has length 17 [2021-11-20 23:16:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:41,614 INFO L470 AbstractCegarLoop]: Abstraction has 1766 states and 3939 transitions. [2021-11-20 23:16:41,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 3939 transitions. [2021-11-20 23:16:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:41,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:41,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:41,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-20 23:16:41,616 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)] === [2021-11-20 23:16:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1742172855, now seen corresponding path program 10 times [2021-11-20 23:16:41,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:41,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895446633] [2021-11-20 23:16:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:41,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:42,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:42,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895446633] [2021-11-20 23:16:42,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895446633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:42,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:42,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:42,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677632154] [2021-11-20 23:16:42,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:42,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:42,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:42,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:42,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:42,014 INFO L87 Difference]: Start difference. First operand 1766 states and 3939 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:44,900 INFO L93 Difference]: Finished difference Result 3103 states and 6921 transitions. [2021-11-20 23:16:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 23:16:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:44,904 INFO L225 Difference]: With dead ends: 3103 [2021-11-20 23:16:44,904 INFO L226 Difference]: Without dead ends: 3103 [2021-11-20 23:16:44,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 23:16:44,905 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 641 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:44,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 41 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:16:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2021-11-20 23:16:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 1774. [2021-11-20 23:16:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1764 states have (on average 2.247165532879819) internal successors, (3964), 1773 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 3964 transitions. [2021-11-20 23:16:44,939 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 3964 transitions. Word has length 17 [2021-11-20 23:16:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:44,939 INFO L470 AbstractCegarLoop]: Abstraction has 1774 states and 3964 transitions. [2021-11-20 23:16:44,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 3964 transitions. [2021-11-20 23:16:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:44,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:44,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:44,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-20 23:16:44,941 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)] === [2021-11-20 23:16:44,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash -29423705, now seen corresponding path program 11 times [2021-11-20 23:16:44,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:44,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743010770] [2021-11-20 23:16:44,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:44,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:45,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:45,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743010770] [2021-11-20 23:16:45,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743010770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:45,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:45,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:45,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907716056] [2021-11-20 23:16:45,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:45,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:45,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:45,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:45,411 INFO L87 Difference]: Start difference. First operand 1774 states and 3964 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:48,985 INFO L93 Difference]: Finished difference Result 3341 states and 7487 transitions. [2021-11-20 23:16:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:16:48,986 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:48,990 INFO L225 Difference]: With dead ends: 3341 [2021-11-20 23:16:48,990 INFO L226 Difference]: Without dead ends: 3341 [2021-11-20 23:16:48,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:16:48,991 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 603 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 3521 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:48,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 47 Invalid, 3570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3521 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:16:48,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2021-11-20 23:16:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 1777. [2021-11-20 23:16:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1767 states have (on average 2.247311827956989) internal successors, (3971), 1776 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 3971 transitions. [2021-11-20 23:16:49,061 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 3971 transitions. Word has length 17 [2021-11-20 23:16:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:49,062 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 3971 transitions. [2021-11-20 23:16:49,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 3971 transitions. [2021-11-20 23:16:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:49,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:49,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:49,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-20 23:16:49,064 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)] === [2021-11-20 23:16:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1729527241, now seen corresponding path program 12 times [2021-11-20 23:16:49,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:49,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996402512] [2021-11-20 23:16:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:49,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:49,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:49,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996402512] [2021-11-20 23:16:49,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996402512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:49,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:49,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:49,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83669421] [2021-11-20 23:16:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:49,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:49,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:49,419 INFO L87 Difference]: Start difference. First operand 1777 states and 3971 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:53,201 INFO L93 Difference]: Finished difference Result 3282 states and 7331 transitions. [2021-11-20 23:16:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 23:16:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:53,206 INFO L225 Difference]: With dead ends: 3282 [2021-11-20 23:16:53,206 INFO L226 Difference]: Without dead ends: 3282 [2021-11-20 23:16:53,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=376, Invalid=1106, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 23:16:53,208 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 650 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 3280 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:53,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 43 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3280 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:16:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2021-11-20 23:16:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 1778. [2021-11-20 23:16:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1768 states have (on average 2.2471719457013575) internal successors, (3973), 1777 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 3973 transitions. [2021-11-20 23:16:53,243 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 3973 transitions. Word has length 17 [2021-11-20 23:16:53,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:53,243 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 3973 transitions. [2021-11-20 23:16:53,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 3973 transitions. [2021-11-20 23:16:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:53,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:53,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:53,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-20 23:16:53,245 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)] === [2021-11-20 23:16:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:53,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1083376517, now seen corresponding path program 13 times [2021-11-20 23:16:53,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:53,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140367053] [2021-11-20 23:16:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:53,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:53,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:53,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140367053] [2021-11-20 23:16:53,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140367053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:53,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:53,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:53,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023835369] [2021-11-20 23:16:53,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:53,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:53,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:53,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:53,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:53,663 INFO L87 Difference]: Start difference. First operand 1778 states and 3973 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:57,198 INFO L93 Difference]: Finished difference Result 3474 states and 7785 transitions. [2021-11-20 23:16:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 23:16:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:16:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:57,204 INFO L225 Difference]: With dead ends: 3474 [2021-11-20 23:16:57,204 INFO L226 Difference]: Without dead ends: 3474 [2021-11-20 23:16:57,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 23:16:57,205 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 770 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 3211 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:57,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 43 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3211 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:16:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2021-11-20 23:16:57,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 1773. [2021-11-20 23:16:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1763 states have (on average 2.246738513896767) internal successors, (3961), 1772 states have internal predecessors, (3961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 3961 transitions. [2021-11-20 23:16:57,242 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 3961 transitions. Word has length 17 [2021-11-20 23:16:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:57,242 INFO L470 AbstractCegarLoop]: Abstraction has 1773 states and 3961 transitions. [2021-11-20 23:16:57,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:16:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 3961 transitions. [2021-11-20 23:16:57,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:16:57,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:57,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:16:57,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-20 23:16:57,244 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)] === [2021-11-20 23:16:57,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash -298267969, now seen corresponding path program 14 times [2021-11-20 23:16:57,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:57,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004208477] [2021-11-20 23:16:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:57,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:57,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:57,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004208477] [2021-11-20 23:16:57,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004208477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:57,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:57,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:16:57,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054530489] [2021-11-20 23:16:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:57,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:16:57,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:16:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:16:57,735 INFO L87 Difference]: Start difference. First operand 1773 states and 3961 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:00,825 INFO L93 Difference]: Finished difference Result 2856 states and 6379 transitions. [2021-11-20 23:17:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 23:17:00,825 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:17:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:00,828 INFO L225 Difference]: With dead ends: 2856 [2021-11-20 23:17:00,829 INFO L226 Difference]: Without dead ends: 2856 [2021-11-20 23:17:00,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:17:00,829 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 484 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:00,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 49 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:17:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2021-11-20 23:17:00,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 1774. [2021-11-20 23:17:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1764 states have (on average 2.246598639455782) internal successors, (3963), 1773 states have internal predecessors, (3963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 3963 transitions. [2021-11-20 23:17:00,884 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 3963 transitions. Word has length 17 [2021-11-20 23:17:00,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:00,884 INFO L470 AbstractCegarLoop]: Abstraction has 1774 states and 3963 transitions. [2021-11-20 23:17:00,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 3963 transitions. [2021-11-20 23:17:00,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:17:00,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:00,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:00,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-20 23:17:00,886 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)] === [2021-11-20 23:17:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash -294616949, now seen corresponding path program 15 times [2021-11-20 23:17:00,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:00,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825493063] [2021-11-20 23:17:00,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:00,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:01,377 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:01,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825493063] [2021-11-20 23:17:01,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825493063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:01,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:01,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:17:01,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718270304] [2021-11-20 23:17:01,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:01,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:17:01,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:01,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:17:01,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:17:01,379 INFO L87 Difference]: Start difference. First operand 1774 states and 3963 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:04,600 INFO L93 Difference]: Finished difference Result 3461 states and 7742 transitions. [2021-11-20 23:17:04,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 23:17:04,600 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:17:04,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:04,604 INFO L225 Difference]: With dead ends: 3461 [2021-11-20 23:17:04,604 INFO L226 Difference]: Without dead ends: 3461 [2021-11-20 23:17:04,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:17:04,605 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 564 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:04,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 45 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:17:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2021-11-20 23:17:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 1768. [2021-11-20 23:17:04,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1758 states have (on average 2.243458475540387) internal successors, (3944), 1767 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 3944 transitions. [2021-11-20 23:17:04,636 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 3944 transitions. Word has length 17 [2021-11-20 23:17:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:04,636 INFO L470 AbstractCegarLoop]: Abstraction has 1768 states and 3944 transitions. [2021-11-20 23:17:04,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 3944 transitions. [2021-11-20 23:17:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:17:04,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:04,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:04,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-20 23:17:04,638 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)] === [2021-11-20 23:17:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:04,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2066213509, now seen corresponding path program 16 times [2021-11-20 23:17:04,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:04,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624399611] [2021-11-20 23:17:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:04,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:05,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:05,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624399611] [2021-11-20 23:17:05,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624399611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:05,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:05,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:17:05,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574226402] [2021-11-20 23:17:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:05,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:17:05,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:17:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:17:05,077 INFO L87 Difference]: Start difference. First operand 1768 states and 3944 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:08,071 INFO L93 Difference]: Finished difference Result 3206 states and 7171 transitions. [2021-11-20 23:17:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 23:17:08,071 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:17:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:08,075 INFO L225 Difference]: With dead ends: 3206 [2021-11-20 23:17:08,075 INFO L226 Difference]: Without dead ends: 3206 [2021-11-20 23:17:08,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:17:08,076 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 686 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:08,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 37 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:17:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-11-20 23:17:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 1750. [2021-11-20 23:17:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1740 states have (on average 2.2408045977011493) internal successors, (3899), 1749 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:08,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 3899 transitions. [2021-11-20 23:17:08,106 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 3899 transitions. Word has length 17 [2021-11-20 23:17:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:08,107 INFO L470 AbstractCegarLoop]: Abstraction has 1750 states and 3899 transitions. [2021-11-20 23:17:08,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 3899 transitions. [2021-11-20 23:17:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:17:08,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:08,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:08,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-20 23:17:08,109 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)] === [2021-11-20 23:17:08,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:08,109 INFO L85 PathProgramCache]: Analyzing trace with hash -307262563, now seen corresponding path program 17 times [2021-11-20 23:17:08,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:08,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290822731] [2021-11-20 23:17:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:08,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:08,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:08,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290822731] [2021-11-20 23:17:08,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290822731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:08,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:08,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:17:08,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318244898] [2021-11-20 23:17:08,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:08,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:17:08,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:08,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:17:08,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:17:08,494 INFO L87 Difference]: Start difference. First operand 1750 states and 3899 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:11,609 INFO L93 Difference]: Finished difference Result 3045 states and 6802 transitions. [2021-11-20 23:17:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 23:17:11,609 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:17:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:11,613 INFO L225 Difference]: With dead ends: 3045 [2021-11-20 23:17:11,613 INFO L226 Difference]: Without dead ends: 3045 [2021-11-20 23:17:11,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 23:17:11,615 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 691 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:11,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 43 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:17:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-11-20 23:17:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 1744. [2021-11-20 23:17:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1734 states have (on average 2.241061130334487) internal successors, (3886), 1743 states have internal predecessors, (3886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 3886 transitions. [2021-11-20 23:17:11,643 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 3886 transitions. Word has length 17 [2021-11-20 23:17:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:11,643 INFO L470 AbstractCegarLoop]: Abstraction has 1744 states and 3886 transitions. [2021-11-20 23:17:11,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 3886 transitions. [2021-11-20 23:17:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:17:11,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:11,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:11,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-20 23:17:11,645 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:17:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1174800975, now seen corresponding path program 18 times [2021-11-20 23:17:11,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:11,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358208029] [2021-11-20 23:17:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:11,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:12,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:12,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358208029] [2021-11-20 23:17:12,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358208029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:12,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:12,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:17:12,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129263287] [2021-11-20 23:17:12,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:12,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:17:12,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:17:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:17:12,026 INFO L87 Difference]: Start difference. First operand 1744 states and 3886 transitions. Second operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:15,525 INFO L93 Difference]: Finished difference Result 3223 states and 7224 transitions. [2021-11-20 23:17:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 23:17:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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 [2021-11-20 23:17:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:15,530 INFO L225 Difference]: With dead ends: 3223 [2021-11-20 23:17:15,530 INFO L226 Difference]: Without dead ends: 3223 [2021-11-20 23:17:15,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 23:17:15,532 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 675 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 3400 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:15,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 47 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3400 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:17:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2021-11-20 23:17:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 1717. [2021-11-20 23:17:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1707 states have (on average 2.240773286467487) internal successors, (3825), 1716 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 3825 transitions. [2021-11-20 23:17:15,569 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 3825 transitions. Word has length 17 [2021-11-20 23:17:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:15,570 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 3825 transitions. [2021-11-20 23:17:15,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2021-11-20 23:17:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 3825 transitions. [2021-11-20 23:17:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:15,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:15,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:15,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-20 23:17:15,571 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)] === [2021-11-20 23:17:15,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:15,571 INFO L85 PathProgramCache]: Analyzing trace with hash -230147840, now seen corresponding path program 1 times [2021-11-20 23:17:15,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:15,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166423518] [2021-11-20 23:17:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:15,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:15,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:15,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166423518] [2021-11-20 23:17:15,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166423518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:15,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:15,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:17:15,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364684220] [2021-11-20 23:17:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:15,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:17:15,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:17:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:17:15,840 INFO L87 Difference]: Start difference. First operand 1717 states and 3825 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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) [2021-11-20 23:17:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:17,154 INFO L93 Difference]: Finished difference Result 2259 states and 5012 transitions. [2021-11-20 23:17:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:17:17,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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 [2021-11-20 23:17:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:17,158 INFO L225 Difference]: With dead ends: 2259 [2021-11-20 23:17:17,158 INFO L226 Difference]: Without dead ends: 2259 [2021-11-20 23:17:17,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:17:17,159 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 254 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:17,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 28 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:17:17,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2021-11-20 23:17:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1759. [2021-11-20 23:17:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1749 states have (on average 2.242424242424242) internal successors, (3922), 1758 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 3922 transitions. [2021-11-20 23:17:17,188 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 3922 transitions. Word has length 18 [2021-11-20 23:17:17,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:17,188 INFO L470 AbstractCegarLoop]: Abstraction has 1759 states and 3922 transitions. [2021-11-20 23:17:17,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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) [2021-11-20 23:17:17,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 3922 transitions. [2021-11-20 23:17:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:17,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:17,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:17,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-20 23:17:17,190 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)] === [2021-11-20 23:17:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1887243008, now seen corresponding path program 2 times [2021-11-20 23:17:17,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:17,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955874028] [2021-11-20 23:17:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:17,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:17,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:17,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955874028] [2021-11-20 23:17:17,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955874028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:17,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:17,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:17:17,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254325549] [2021-11-20 23:17:17,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:17,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:17:17,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:17:17,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:17:17,527 INFO L87 Difference]: Start difference. First operand 1759 states and 3922 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) [2021-11-20 23:17:19,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:19,362 INFO L93 Difference]: Finished difference Result 2269 states and 5032 transitions. [2021-11-20 23:17:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:17:19,363 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 [2021-11-20 23:17:19,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:19,369 INFO L225 Difference]: With dead ends: 2269 [2021-11-20 23:17:19,369 INFO L226 Difference]: Without dead ends: 2269 [2021-11-20 23:17:19,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:17:19,370 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 274 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:19,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 28 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:17:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2021-11-20 23:17:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 1763. [2021-11-20 23:17:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1753 states have (on average 2.24187107815174) internal successors, (3930), 1762 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 3930 transitions. [2021-11-20 23:17:19,394 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 3930 transitions. Word has length 18 [2021-11-20 23:17:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:19,394 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 3930 transitions. [2021-11-20 23:17:19,394 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) [2021-11-20 23:17:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 3930 transitions. [2021-11-20 23:17:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:19,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:19,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:19,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-20 23:17:19,395 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)] === [2021-11-20 23:17:19,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1466327514, now seen corresponding path program 3 times [2021-11-20 23:17:19,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:19,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828572874] [2021-11-20 23:17:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:19,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:19,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828572874] [2021-11-20 23:17:19,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828572874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:19,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:19,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:17:19,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142128908] [2021-11-20 23:17:19,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:19,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:17:19,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:17:19,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:17:19,684 INFO L87 Difference]: Start difference. First operand 1763 states and 3930 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) [2021-11-20 23:17:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:21,365 INFO L93 Difference]: Finished difference Result 2366 states and 5233 transitions. [2021-11-20 23:17:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:17:21,365 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 [2021-11-20 23:17:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:21,368 INFO L225 Difference]: With dead ends: 2366 [2021-11-20 23:17:21,368 INFO L226 Difference]: Without dead ends: 2366 [2021-11-20 23:17:21,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:17:21,369 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 325 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:21,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 26 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:17:21,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2021-11-20 23:17:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 1796. [2021-11-20 23:17:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1786 states have (on average 2.2390817469204927) internal successors, (3999), 1795 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 3999 transitions. [2021-11-20 23:17:21,397 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 3999 transitions. Word has length 18 [2021-11-20 23:17:21,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:21,397 INFO L470 AbstractCegarLoop]: Abstraction has 1796 states and 3999 transitions. [2021-11-20 23:17:21,397 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) [2021-11-20 23:17:21,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 3999 transitions. [2021-11-20 23:17:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:21,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:21,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:21,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-20 23:17:21,399 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)] === [2021-11-20 23:17:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1222627524, now seen corresponding path program 4 times [2021-11-20 23:17:21,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:21,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437104810] [2021-11-20 23:17:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:21,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:21,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437104810] [2021-11-20 23:17:21,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437104810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:21,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:21,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:17:21,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620313298] [2021-11-20 23:17:21,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:21,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:17:21,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:17:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:17:21,786 INFO L87 Difference]: Start difference. First operand 1796 states and 3999 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) [2021-11-20 23:17:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:24,782 INFO L93 Difference]: Finished difference Result 2540 states and 5612 transitions. [2021-11-20 23:17:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 23:17:24,783 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 [2021-11-20 23:17:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:24,786 INFO L225 Difference]: With dead ends: 2540 [2021-11-20 23:17:24,786 INFO L226 Difference]: Without dead ends: 2540 [2021-11-20 23:17:24,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=511, Invalid=1129, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:17:24,788 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 532 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:24,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 42 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:17:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2021-11-20 23:17:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 1848. [2021-11-20 23:17:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1838 states have (on average 2.23993471164309) internal successors, (4117), 1847 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 4117 transitions. [2021-11-20 23:17:24,827 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 4117 transitions. Word has length 18 [2021-11-20 23:17:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:24,827 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 4117 transitions. [2021-11-20 23:17:24,827 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) [2021-11-20 23:17:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 4117 transitions. [2021-11-20 23:17:24,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:24,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:24,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:24,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-20 23:17:24,829 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)] === [2021-11-20 23:17:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash 395327774, now seen corresponding path program 5 times [2021-11-20 23:17:24,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:24,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550359121] [2021-11-20 23:17:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:24,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:25,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:25,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550359121] [2021-11-20 23:17:25,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550359121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:25,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:25,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:17:25,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359561784] [2021-11-20 23:17:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:25,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:17:25,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:17:25,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:17:25,070 INFO L87 Difference]: Start difference. First operand 1848 states and 4117 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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) [2021-11-20 23:17:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:27,586 INFO L93 Difference]: Finished difference Result 2442 states and 5403 transitions. [2021-11-20 23:17:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 23:17:27,587 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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 [2021-11-20 23:17:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:27,591 INFO L225 Difference]: With dead ends: 2442 [2021-11-20 23:17:27,591 INFO L226 Difference]: Without dead ends: 2442 [2021-11-20 23:17:27,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=553, Unknown=0, NotChecked=0, Total=812 [2021-11-20 23:17:27,592 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 445 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:27,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 30 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:17:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-11-20 23:17:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1859. [2021-11-20 23:17:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1849 states have (on average 2.2390481341265547) internal successors, (4140), 1858 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 4140 transitions. [2021-11-20 23:17:27,643 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 4140 transitions. Word has length 18 [2021-11-20 23:17:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:27,643 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 4140 transitions. [2021-11-20 23:17:27,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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) [2021-11-20 23:17:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 4140 transitions. [2021-11-20 23:17:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:27,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:27,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:27,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-20 23:17:27,645 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)] === [2021-11-20 23:17:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:27,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1261767394, now seen corresponding path program 6 times [2021-11-20 23:17:27,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:27,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987390778] [2021-11-20 23:17:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:27,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:27,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:27,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987390778] [2021-11-20 23:17:27,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987390778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:27,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:27,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:17:27,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527166967] [2021-11-20 23:17:27,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:27,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:17:27,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:17:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:17:27,984 INFO L87 Difference]: Start difference. First operand 1859 states and 4140 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) [2021-11-20 23:17:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:31,122 INFO L93 Difference]: Finished difference Result 2473 states and 5464 transitions. [2021-11-20 23:17:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 23:17:31,122 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 [2021-11-20 23:17:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:31,126 INFO L225 Difference]: With dead ends: 2473 [2021-11-20 23:17:31,126 INFO L226 Difference]: Without dead ends: 2473 [2021-11-20 23:17:31,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=308, Invalid=748, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 23:17:31,127 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 501 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:31,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 30 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:17:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-11-20 23:17:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1864. [2021-11-20 23:17:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1854 states have (on average 2.238403451995685) internal successors, (4150), 1863 states have internal predecessors, (4150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 4150 transitions. [2021-11-20 23:17:31,154 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 4150 transitions. Word has length 18 [2021-11-20 23:17:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:31,154 INFO L470 AbstractCegarLoop]: Abstraction has 1864 states and 4150 transitions. [2021-11-20 23:17:31,154 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) [2021-11-20 23:17:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 4150 transitions. [2021-11-20 23:17:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:31,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:31,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:31,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-20 23:17:31,157 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)] === [2021-11-20 23:17:31,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:31,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2091803128, now seen corresponding path program 7 times [2021-11-20 23:17:31,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:31,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922039424] [2021-11-20 23:17:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:31,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:31,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:31,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922039424] [2021-11-20 23:17:31,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922039424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:31,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:31,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:17:31,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93085617] [2021-11-20 23:17:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:31,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:17:31,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:17:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:17:31,512 INFO L87 Difference]: Start difference. First operand 1864 states and 4150 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) [2021-11-20 23:17:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:34,449 INFO L93 Difference]: Finished difference Result 2503 states and 5524 transitions. [2021-11-20 23:17:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 23:17:34,450 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 [2021-11-20 23:17:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:34,453 INFO L225 Difference]: With dead ends: 2503 [2021-11-20 23:17:34,453 INFO L226 Difference]: Without dead ends: 2503 [2021-11-20 23:17:34,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:17:34,454 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 513 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:34,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 30 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:17:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-11-20 23:17:34,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 1866. [2021-11-20 23:17:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1856 states have (on average 2.238146551724138) internal successors, (4154), 1865 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 4154 transitions. [2021-11-20 23:17:34,479 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 4154 transitions. Word has length 18 [2021-11-20 23:17:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:34,479 INFO L470 AbstractCegarLoop]: Abstraction has 1866 states and 4154 transitions. [2021-11-20 23:17:34,479 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) [2021-11-20 23:17:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 4154 transitions. [2021-11-20 23:17:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:34,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:34,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:34,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-20 23:17:34,481 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)] === [2021-11-20 23:17:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1848103138, now seen corresponding path program 8 times [2021-11-20 23:17:34,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:34,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592667942] [2021-11-20 23:17:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:34,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:34,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:34,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592667942] [2021-11-20 23:17:34,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592667942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:34,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:34,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:17:34,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171342229] [2021-11-20 23:17:34,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:34,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:17:34,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:34,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:17:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:17:34,779 INFO L87 Difference]: Start difference. First operand 1866 states and 4154 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) [2021-11-20 23:17:38,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:38,961 INFO L93 Difference]: Finished difference Result 2881 states and 6339 transitions. [2021-11-20 23:17:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 23:17:38,961 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 [2021-11-20 23:17:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:38,965 INFO L225 Difference]: With dead ends: 2881 [2021-11-20 23:17:38,965 INFO L226 Difference]: Without dead ends: 2881 [2021-11-20 23:17:38,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=815, Invalid=2265, Unknown=0, NotChecked=0, Total=3080 [2021-11-20 23:17:38,966 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 708 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3796 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:38,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 42 Invalid, 3914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3796 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:17:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2021-11-20 23:17:38,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1861. [2021-11-20 23:17:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1851 states have (on average 2.2393300918422474) internal successors, (4145), 1860 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 4145 transitions. [2021-11-20 23:17:38,995 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 4145 transitions. Word has length 18 [2021-11-20 23:17:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:38,995 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 4145 transitions. [2021-11-20 23:17:38,995 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) [2021-11-20 23:17:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 4145 transitions. [2021-11-20 23:17:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:38,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:38,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:38,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-20 23:17:38,997 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)] === [2021-11-20 23:17:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash 69876636, now seen corresponding path program 9 times [2021-11-20 23:17:38,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:38,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072707280] [2021-11-20 23:17:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:38,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:39,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:39,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072707280] [2021-11-20 23:17:39,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072707280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:39,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:39,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:17:39,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217620508] [2021-11-20 23:17:39,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:39,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:17:39,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:39,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:17:39,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:17:39,256 INFO L87 Difference]: Start difference. First operand 1861 states and 4145 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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) [2021-11-20 23:17:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:41,236 INFO L93 Difference]: Finished difference Result 2737 states and 6018 transitions. [2021-11-20 23:17:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:17:41,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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 [2021-11-20 23:17:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:41,240 INFO L225 Difference]: With dead ends: 2737 [2021-11-20 23:17:41,240 INFO L226 Difference]: Without dead ends: 2737 [2021-11-20 23:17:41,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:17:41,241 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 486 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:41,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 30 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:17:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-11-20 23:17:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1843. [2021-11-20 23:17:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1833 states have (on average 2.241680305510093) internal successors, (4109), 1842 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 4109 transitions. [2021-11-20 23:17:41,265 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 4109 transitions. Word has length 18 [2021-11-20 23:17:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:41,265 INFO L470 AbstractCegarLoop]: Abstraction has 1843 states and 4109 transitions. [2021-11-20 23:17:41,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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) [2021-11-20 23:17:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 4109 transitions. [2021-11-20 23:17:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:41,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:41,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:41,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-20 23:17:41,267 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)] === [2021-11-20 23:17:41,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:41,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1115220128, now seen corresponding path program 10 times [2021-11-20 23:17:41,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:41,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565704807] [2021-11-20 23:17:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:41,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:41,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:41,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565704807] [2021-11-20 23:17:41,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565704807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:41,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:41,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:17:41,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083176824] [2021-11-20 23:17:41,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:41,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:17:41,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:17:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:17:41,533 INFO L87 Difference]: Start difference. First operand 1843 states and 4109 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) [2021-11-20 23:17:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:45,326 INFO L93 Difference]: Finished difference Result 2915 states and 6406 transitions. [2021-11-20 23:17:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 23:17:45,326 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 [2021-11-20 23:17:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:45,329 INFO L225 Difference]: With dead ends: 2915 [2021-11-20 23:17:45,329 INFO L226 Difference]: Without dead ends: 2915 [2021-11-20 23:17:45,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=833, Invalid=2359, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 23:17:45,330 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 839 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 3735 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:45,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 42 Invalid, 3858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3735 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:17:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-11-20 23:17:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1831. [2021-11-20 23:17:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1821 states have (on average 2.242174629324547) internal successors, (4083), 1830 states have internal predecessors, (4083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 4083 transitions. [2021-11-20 23:17:45,359 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 4083 transitions. Word has length 18 [2021-11-20 23:17:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:45,359 INFO L470 AbstractCegarLoop]: Abstraction has 1831 states and 4083 transitions. [2021-11-20 23:17:45,360 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) [2021-11-20 23:17:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 4083 transitions. [2021-11-20 23:17:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:45,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:45,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:45,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-20 23:17:45,362 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)] === [2021-11-20 23:17:45,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1930502266, now seen corresponding path program 11 times [2021-11-20 23:17:45,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:45,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68769224] [2021-11-20 23:17:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:45,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:45,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:45,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68769224] [2021-11-20 23:17:45,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68769224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:45,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:45,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:17:45,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54084114] [2021-11-20 23:17:45,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:45,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:17:45,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:17:45,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:17:45,657 INFO L87 Difference]: Start difference. First operand 1831 states and 4083 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) [2021-11-20 23:17:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:49,210 INFO L93 Difference]: Finished difference Result 2837 states and 6242 transitions. [2021-11-20 23:17:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 23:17:49,211 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 [2021-11-20 23:17:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:49,214 INFO L225 Difference]: With dead ends: 2837 [2021-11-20 23:17:49,214 INFO L226 Difference]: Without dead ends: 2837 [2021-11-20 23:17:49,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=883, Invalid=2657, Unknown=0, NotChecked=0, Total=3540 [2021-11-20 23:17:49,215 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1031 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:49,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 34 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:17:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2021-11-20 23:17:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1825. [2021-11-20 23:17:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1815 states have (on average 2.242424242424242) internal successors, (4070), 1824 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 4070 transitions. [2021-11-20 23:17:49,243 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 4070 transitions. Word has length 18 [2021-11-20 23:17:49,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:49,243 INFO L470 AbstractCegarLoop]: Abstraction has 1825 states and 4070 transitions. [2021-11-20 23:17:49,243 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) [2021-11-20 23:17:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 4070 transitions. [2021-11-20 23:17:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:49,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:49,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:49,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-20 23:17:49,244 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)] === [2021-11-20 23:17:49,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:49,245 INFO L85 PathProgramCache]: Analyzing trace with hash 647310616, now seen corresponding path program 12 times [2021-11-20 23:17:49,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:49,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580542383] [2021-11-20 23:17:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:49,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:49,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:49,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580542383] [2021-11-20 23:17:49,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580542383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:49,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:49,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:17:49,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409094446] [2021-11-20 23:17:49,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:49,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:17:49,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:49,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:17:49,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:17:49,525 INFO L87 Difference]: Start difference. First operand 1825 states and 4070 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) [2021-11-20 23:17:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:54,185 INFO L93 Difference]: Finished difference Result 2777 states and 6116 transitions. [2021-11-20 23:17:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-20 23:17:54,186 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 [2021-11-20 23:17:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:54,189 INFO L225 Difference]: With dead ends: 2777 [2021-11-20 23:17:54,189 INFO L226 Difference]: Without dead ends: 2777 [2021-11-20 23:17:54,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=970, Invalid=3062, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 23:17:54,190 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 932 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 4662 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 4790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:54,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 48 Invalid, 4790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4662 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 23:17:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2021-11-20 23:17:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 1806. [2021-11-20 23:17:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1796 states have (on average 2.242761692650334) internal successors, (4028), 1805 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 4028 transitions. [2021-11-20 23:17:54,215 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 4028 transitions. Word has length 18 [2021-11-20 23:17:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:54,215 INFO L470 AbstractCegarLoop]: Abstraction has 1806 states and 4028 transitions. [2021-11-20 23:17:54,216 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) [2021-11-20 23:17:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 4028 transitions. [2021-11-20 23:17:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:54,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:54,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:54,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-20 23:17:54,217 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)] === [2021-11-20 23:17:54,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:54,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1302206664, now seen corresponding path program 13 times [2021-11-20 23:17:54,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:54,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024920425] [2021-11-20 23:17:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:54,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:54,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:54,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024920425] [2021-11-20 23:17:54,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024920425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:54,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:54,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:17:54,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344369946] [2021-11-20 23:17:54,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:54,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:17:54,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:17:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:17:54,422 INFO L87 Difference]: Start difference. First operand 1806 states and 4028 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) [2021-11-20 23:17:55,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:55,632 INFO L93 Difference]: Finished difference Result 2138 states and 4743 transitions. [2021-11-20 23:17:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:17:55,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 [2021-11-20 23:17:55,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:55,634 INFO L225 Difference]: With dead ends: 2138 [2021-11-20 23:17:55,634 INFO L226 Difference]: Without dead ends: 2138 [2021-11-20 23:17:55,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:17:55,635 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 227 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:55,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 25 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:17:55,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-11-20 23:17:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1809. [2021-11-20 23:17:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1799 states have (on average 2.2418010005558644) internal successors, (4033), 1808 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 4033 transitions. [2021-11-20 23:17:55,661 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 4033 transitions. Word has length 18 [2021-11-20 23:17:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:55,661 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 4033 transitions. [2021-11-20 23:17:55,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) [2021-11-20 23:17:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 4033 transitions. [2021-11-20 23:17:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:55,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:55,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:55,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-20 23:17:55,663 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)] === [2021-11-20 23:17:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1335665464, now seen corresponding path program 14 times [2021-11-20 23:17:55,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:55,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30953934] [2021-11-20 23:17:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:55,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:55,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:55,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30953934] [2021-11-20 23:17:55,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30953934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:55,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:55,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:17:55,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383285747] [2021-11-20 23:17:55,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:55,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:17:55,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:17:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:17:55,924 INFO L87 Difference]: Start difference. First operand 1809 states and 4033 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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) [2021-11-20 23:17:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:57,883 INFO L93 Difference]: Finished difference Result 2158 states and 4783 transitions. [2021-11-20 23:17:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:17:57,884 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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 [2021-11-20 23:17:57,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:57,886 INFO L225 Difference]: With dead ends: 2158 [2021-11-20 23:17:57,887 INFO L226 Difference]: Without dead ends: 2158 [2021-11-20 23:17:57,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:17:57,887 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 243 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:57,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 31 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:17:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-11-20 23:17:57,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1813. [2021-11-20 23:17:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1803 states have (on average 2.2412645590682194) internal successors, (4041), 1812 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 4041 transitions. [2021-11-20 23:17:57,913 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 4041 transitions. Word has length 18 [2021-11-20 23:17:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:57,913 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 4041 transitions. [2021-11-20 23:17:57,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 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) [2021-11-20 23:17:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 4041 transitions. [2021-11-20 23:17:57,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:57,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:57,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:57,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-20 23:17:57,914 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)] === [2021-11-20 23:17:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash 394268690, now seen corresponding path program 15 times [2021-11-20 23:17:57,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:57,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544616872] [2021-11-20 23:17:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:57,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:17:58,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:58,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544616872] [2021-11-20 23:17:58,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544616872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:58,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:58,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:17:58,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648126786] [2021-11-20 23:17:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:58,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:17:58,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:17:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:17:58,164 INFO L87 Difference]: Start difference. First operand 1813 states and 4041 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) [2021-11-20 23:17:59,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:59,845 INFO L93 Difference]: Finished difference Result 2178 states and 4823 transitions. [2021-11-20 23:17:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:17:59,845 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 [2021-11-20 23:17:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:59,847 INFO L225 Difference]: With dead ends: 2178 [2021-11-20 23:17:59,848 INFO L226 Difference]: Without dead ends: 2178 [2021-11-20 23:17:59,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:17:59,848 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 303 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:59,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 27 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:17:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2021-11-20 23:17:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 1812. [2021-11-20 23:17:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1802 states have (on average 2.2413984461709213) internal successors, (4039), 1811 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:17:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 4039 transitions. [2021-11-20 23:17:59,876 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 4039 transitions. Word has length 18 [2021-11-20 23:17:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:59,876 INFO L470 AbstractCegarLoop]: Abstraction has 1812 states and 4039 transitions. [2021-11-20 23:17:59,877 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) [2021-11-20 23:17:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 4039 transitions. [2021-11-20 23:17:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:17:59,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:59,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:59,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-20 23:17:59,879 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)] === [2021-11-20 23:17:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:59,879 INFO L85 PathProgramCache]: Analyzing trace with hash 150568700, now seen corresponding path program 16 times [2021-11-20 23:17:59,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:59,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176412769] [2021-11-20 23:17:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:59,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:00,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:00,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176412769] [2021-11-20 23:18:00,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176412769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:00,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:00,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:18:00,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589553238] [2021-11-20 23:18:00,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:00,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:18:00,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:18:00,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:00,157 INFO L87 Difference]: Start difference. First operand 1812 states and 4039 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) [2021-11-20 23:18:03,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:03,250 INFO L93 Difference]: Finished difference Result 2403 states and 5306 transitions. [2021-11-20 23:18:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 23:18:03,251 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 [2021-11-20 23:18:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:03,254 INFO L225 Difference]: With dead ends: 2403 [2021-11-20 23:18:03,254 INFO L226 Difference]: Without dead ends: 2403 [2021-11-20 23:18:03,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:18:03,255 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 715 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 4132 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:03,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 42 Invalid, 4201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4132 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:18:03,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-11-20 23:18:03,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 1841. [2021-11-20 23:18:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1831 states have (on average 2.241398143091207) internal successors, (4104), 1840 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 4104 transitions. [2021-11-20 23:18:03,286 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 4104 transitions. Word has length 18 [2021-11-20 23:18:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:03,286 INFO L470 AbstractCegarLoop]: Abstraction has 1841 states and 4104 transitions. [2021-11-20 23:18:03,287 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) [2021-11-20 23:18:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 4104 transitions. [2021-11-20 23:18:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:03,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:03,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:03,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-20 23:18:03,288 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)] === [2021-11-20 23:18:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1627657802, now seen corresponding path program 17 times [2021-11-20 23:18:03,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:03,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018098528] [2021-11-20 23:18:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:03,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:03,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018098528] [2021-11-20 23:18:03,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018098528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:03,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:03,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:18:03,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84653390] [2021-11-20 23:18:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:03,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:18:03,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:18:03,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:18:03,523 INFO L87 Difference]: Start difference. First operand 1841 states and 4104 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) [2021-11-20 23:18:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:05,235 INFO L93 Difference]: Finished difference Result 2343 states and 5169 transitions. [2021-11-20 23:18:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:18:05,236 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 [2021-11-20 23:18:05,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:05,238 INFO L225 Difference]: With dead ends: 2343 [2021-11-20 23:18:05,239 INFO L226 Difference]: Without dead ends: 2343 [2021-11-20 23:18:05,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:18:05,239 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 378 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:05,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 25 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:18:05,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2021-11-20 23:18:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 1829. [2021-11-20 23:18:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1819 states have (on average 2.240791643760308) internal successors, (4076), 1828 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:05,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 4076 transitions. [2021-11-20 23:18:05,265 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 4076 transitions. Word has length 18 [2021-11-20 23:18:05,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:05,265 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 4076 transitions. [2021-11-20 23:18:05,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) [2021-11-20 23:18:05,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 4076 transitions. [2021-11-20 23:18:05,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:05,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:05,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:05,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-20 23:18:05,267 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)] === [2021-11-20 23:18:05,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1482212730, now seen corresponding path program 18 times [2021-11-20 23:18:05,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:05,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759018664] [2021-11-20 23:18:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:05,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:05,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759018664] [2021-11-20 23:18:05,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759018664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:05,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:05,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:18:05,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868281386] [2021-11-20 23:18:05,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:05,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:18:05,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:18:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:18:05,584 INFO L87 Difference]: Start difference. First operand 1829 states and 4076 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) [2021-11-20 23:18:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:09,029 INFO L93 Difference]: Finished difference Result 2497 states and 5501 transitions. [2021-11-20 23:18:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:18:09,030 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 [2021-11-20 23:18:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:09,033 INFO L225 Difference]: With dead ends: 2497 [2021-11-20 23:18:09,033 INFO L226 Difference]: Without dead ends: 2497 [2021-11-20 23:18:09,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=496, Invalid=1760, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:18:09,035 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 682 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 4222 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 4281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 4222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:09,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 44 Invalid, 4281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 4222 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:18:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2021-11-20 23:18:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 1817. [2021-11-20 23:18:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1807 states have (on average 2.241283895960155) internal successors, (4050), 1816 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 4050 transitions. [2021-11-20 23:18:09,066 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 4050 transitions. Word has length 18 [2021-11-20 23:18:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:09,066 INFO L470 AbstractCegarLoop]: Abstraction has 1817 states and 4050 transitions. [2021-11-20 23:18:09,066 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) [2021-11-20 23:18:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 4050 transitions. [2021-11-20 23:18:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:09,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:09,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:09,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-20 23:18:09,067 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)] === [2021-11-20 23:18:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash 666930592, now seen corresponding path program 19 times [2021-11-20 23:18:09,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:09,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951403337] [2021-11-20 23:18:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:09,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:09,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:09,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951403337] [2021-11-20 23:18:09,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951403337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:09,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:09,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:18:09,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481814724] [2021-11-20 23:18:09,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:09,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:18:09,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:09,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:18:09,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:09,368 INFO L87 Difference]: Start difference. First operand 1817 states and 4050 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) [2021-11-20 23:18:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:12,904 INFO L93 Difference]: Finished difference Result 2458 states and 5419 transitions. [2021-11-20 23:18:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-20 23:18:12,905 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 [2021-11-20 23:18:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:12,908 INFO L225 Difference]: With dead ends: 2458 [2021-11-20 23:18:12,908 INFO L226 Difference]: Without dead ends: 2458 [2021-11-20 23:18:12,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=513, Invalid=1937, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 23:18:12,908 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 744 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4608 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 4673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:12,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 44 Invalid, 4673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4608 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:18:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-11-20 23:18:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1811. [2021-11-20 23:18:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1801 states have (on average 2.2415324819544695) internal successors, (4037), 1810 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 4037 transitions. [2021-11-20 23:18:12,937 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 4037 transitions. Word has length 18 [2021-11-20 23:18:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:12,938 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 4037 transitions. [2021-11-20 23:18:12,938 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) [2021-11-20 23:18:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 4037 transitions. [2021-11-20 23:18:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:12,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:12,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:12,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-20 23:18:12,940 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:18:12,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1050223822, now seen corresponding path program 20 times [2021-11-20 23:18:12,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:12,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377978109] [2021-11-20 23:18:12,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:12,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:13,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:13,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377978109] [2021-11-20 23:18:13,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377978109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:13,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:13,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:18:13,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409674829] [2021-11-20 23:18:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:13,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:18:13,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:18:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:13,158 INFO L87 Difference]: Start difference. First operand 1811 states and 4037 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) [2021-11-20 23:18:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:16,355 INFO L93 Difference]: Finished difference Result 2428 states and 5356 transitions. [2021-11-20 23:18:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 23:18:16,355 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 [2021-11-20 23:18:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:16,370 INFO L225 Difference]: With dead ends: 2428 [2021-11-20 23:18:16,370 INFO L226 Difference]: Without dead ends: 2428 [2021-11-20 23:18:16,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=534, Invalid=2118, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 23:18:16,371 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 800 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 4138 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 4207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:16,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 36 Invalid, 4207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4138 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:18:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-11-20 23:18:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1800. [2021-11-20 23:18:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1790 states have (on average 2.2424581005586592) internal successors, (4014), 1799 states have internal predecessors, (4014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 4014 transitions. [2021-11-20 23:18:16,400 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 4014 transitions. Word has length 18 [2021-11-20 23:18:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:16,400 INFO L470 AbstractCegarLoop]: Abstraction has 1800 states and 4014 transitions. [2021-11-20 23:18:16,400 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) [2021-11-20 23:18:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 4014 transitions. [2021-11-20 23:18:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:16,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:16,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:16,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-20 23:18:16,402 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)] === [2021-11-20 23:18:16,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:16,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1150195072, now seen corresponding path program 21 times [2021-11-20 23:18:16,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:16,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99917607] [2021-11-20 23:18:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:16,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:16,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:16,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99917607] [2021-11-20 23:18:16,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99917607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:16,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:16,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:18:16,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518204634] [2021-11-20 23:18:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:16,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:18:16,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:16,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:18:16,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:18:16,598 INFO L87 Difference]: Start difference. First operand 1800 states and 4014 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) [2021-11-20 23:18:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:17,860 INFO L93 Difference]: Finished difference Result 2273 states and 5024 transitions. [2021-11-20 23:18:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:18:17,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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 [2021-11-20 23:18:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:17,863 INFO L225 Difference]: With dead ends: 2273 [2021-11-20 23:18:17,863 INFO L226 Difference]: Without dead ends: 2273 [2021-11-20 23:18:17,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:17,864 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 342 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:17,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 23 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:18:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2021-11-20 23:18:17,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1805. [2021-11-20 23:18:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1795 states have (on average 2.241225626740947) internal successors, (4023), 1804 states have internal predecessors, (4023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 4023 transitions. [2021-11-20 23:18:17,886 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 4023 transitions. Word has length 18 [2021-11-20 23:18:17,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:17,887 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 4023 transitions. [2021-11-20 23:18:17,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) [2021-11-20 23:18:17,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 4023 transitions. [2021-11-20 23:18:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:17,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:17,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:17,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-20 23:18:17,888 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)] === [2021-11-20 23:18:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:17,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1959675460, now seen corresponding path program 22 times [2021-11-20 23:18:17,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:17,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51250101] [2021-11-20 23:18:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:17,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:18,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:18,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51250101] [2021-11-20 23:18:18,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51250101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:18,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:18,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:18:18,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687465832] [2021-11-20 23:18:18,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:18,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:18:18,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:18:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:18:18,168 INFO L87 Difference]: Start difference. First operand 1805 states and 4023 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) [2021-11-20 23:18:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:21,425 INFO L93 Difference]: Finished difference Result 2452 states and 5402 transitions. [2021-11-20 23:18:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:18:21,426 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 [2021-11-20 23:18:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:21,429 INFO L225 Difference]: With dead ends: 2452 [2021-11-20 23:18:21,430 INFO L226 Difference]: Without dead ends: 2452 [2021-11-20 23:18:21,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=459, Invalid=1181, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:18:21,430 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 558 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 4067 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:21,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 46 Invalid, 4119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4067 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:18:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2021-11-20 23:18:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 1793. [2021-11-20 23:18:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1783 states have (on average 2.2417274256870443) internal successors, (3997), 1792 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 3997 transitions. [2021-11-20 23:18:21,473 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 3997 transitions. Word has length 18 [2021-11-20 23:18:21,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:21,473 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 3997 transitions. [2021-11-20 23:18:21,473 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) [2021-11-20 23:18:21,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 3997 transitions. [2021-11-20 23:18:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:21,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:21,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:21,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-20 23:18:21,474 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)] === [2021-11-20 23:18:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:21,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1144393322, now seen corresponding path program 23 times [2021-11-20 23:18:21,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:21,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934315502] [2021-11-20 23:18:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:21,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:21,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:21,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934315502] [2021-11-20 23:18:21,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934315502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:21,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:21,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:18:21,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350900581] [2021-11-20 23:18:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:21,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:18:21,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:18:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:21,764 INFO L87 Difference]: Start difference. First operand 1793 states and 3997 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) [2021-11-20 23:18:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:24,908 INFO L93 Difference]: Finished difference Result 2490 states and 5485 transitions. [2021-11-20 23:18:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:18:24,909 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 [2021-11-20 23:18:24,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:24,911 INFO L225 Difference]: With dead ends: 2490 [2021-11-20 23:18:24,912 INFO L226 Difference]: Without dead ends: 2490 [2021-11-20 23:18:24,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=488, Invalid=1318, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:18:24,912 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 697 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 3364 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:24,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 40 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3364 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:18:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2021-11-20 23:18:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1794. [2021-11-20 23:18:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1784 states have (on average 2.241591928251121) internal successors, (3999), 1793 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 3999 transitions. [2021-11-20 23:18:24,938 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 3999 transitions. Word has length 18 [2021-11-20 23:18:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:24,938 INFO L470 AbstractCegarLoop]: Abstraction has 1794 states and 3999 transitions. [2021-11-20 23:18:24,938 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) [2021-11-20 23:18:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 3999 transitions. [2021-11-20 23:18:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:24,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:24,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:24,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-20 23:18:24,939 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)] === [2021-11-20 23:18:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash -572761092, now seen corresponding path program 24 times [2021-11-20 23:18:24,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:24,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007930154] [2021-11-20 23:18:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:24,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:25,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:25,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007930154] [2021-11-20 23:18:25,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007930154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:25,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:25,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:18:25,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815964739] [2021-11-20 23:18:25,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:25,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:18:25,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:25,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:18:25,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:25,204 INFO L87 Difference]: Start difference. First operand 1794 states and 3999 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) [2021-11-20 23:18:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:28,504 INFO L93 Difference]: Finished difference Result 2495 states and 5495 transitions. [2021-11-20 23:18:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 23:18:28,505 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 [2021-11-20 23:18:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:28,508 INFO L225 Difference]: With dead ends: 2495 [2021-11-20 23:18:28,508 INFO L226 Difference]: Without dead ends: 2495 [2021-11-20 23:18:28,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=511, Invalid=1381, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 23:18:28,509 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 755 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:28,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 36 Invalid, 3445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:18:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-11-20 23:18:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1791. [2021-11-20 23:18:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1781 states have (on average 2.2419988770353734) internal successors, (3993), 1790 states have internal predecessors, (3993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 3993 transitions. [2021-11-20 23:18:28,536 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 3993 transitions. Word has length 18 [2021-11-20 23:18:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:28,536 INFO L470 AbstractCegarLoop]: Abstraction has 1791 states and 3993 transitions. [2021-11-20 23:18:28,536 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) [2021-11-20 23:18:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 3993 transitions. [2021-11-20 23:18:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:28,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:28,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:28,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-20 23:18:28,538 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:18:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash -464618492, now seen corresponding path program 25 times [2021-11-20 23:18:28,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:28,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787506756] [2021-11-20 23:18:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:28,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:28,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787506756] [2021-11-20 23:18:28,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787506756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:28,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:28,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:18:28,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554836806] [2021-11-20 23:18:28,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:18:28,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:18:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:28,784 INFO L87 Difference]: Start difference. First operand 1791 states and 3993 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) [2021-11-20 23:18:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:32,340 INFO L93 Difference]: Finished difference Result 2427 states and 5350 transitions. [2021-11-20 23:18:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 23:18:32,340 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 [2021-11-20 23:18:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:32,343 INFO L225 Difference]: With dead ends: 2427 [2021-11-20 23:18:32,343 INFO L226 Difference]: Without dead ends: 2427 [2021-11-20 23:18:32,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=518, Invalid=1462, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:18:32,344 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 693 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 3916 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:32,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 42 Invalid, 3977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3916 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:18:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-11-20 23:18:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 1785. [2021-11-20 23:18:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1775 states have (on average 2.2422535211267607) internal successors, (3980), 1784 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3980 transitions. [2021-11-20 23:18:32,385 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3980 transitions. Word has length 18 [2021-11-20 23:18:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:32,386 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 3980 transitions. [2021-11-20 23:18:32,386 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) [2021-11-20 23:18:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3980 transitions. [2021-11-20 23:18:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:32,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:32,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:32,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-20 23:18:32,388 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)] === [2021-11-20 23:18:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2113194390, now seen corresponding path program 26 times [2021-11-20 23:18:32,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:32,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218482562] [2021-11-20 23:18:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:32,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:32,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:32,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218482562] [2021-11-20 23:18:32,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218482562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:32,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:32,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:18:32,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164689100] [2021-11-20 23:18:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:32,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:18:32,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:18:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:32,646 INFO L87 Difference]: Start difference. First operand 1785 states and 3980 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) [2021-11-20 23:18:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:36,289 INFO L93 Difference]: Finished difference Result 2460 states and 5422 transitions. [2021-11-20 23:18:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:18:36,289 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 [2021-11-20 23:18:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:36,292 INFO L225 Difference]: With dead ends: 2460 [2021-11-20 23:18:36,292 INFO L226 Difference]: Without dead ends: 2460 [2021-11-20 23:18:36,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=540, Invalid=1530, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:18:36,293 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 685 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 4398 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 4459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:36,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 44 Invalid, 4459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 4398 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:18:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-11-20 23:18:36,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1784. [2021-11-20 23:18:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1774 states have (on average 2.2423900789177003) internal successors, (3978), 1783 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 3978 transitions. [2021-11-20 23:18:36,326 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 3978 transitions. Word has length 18 [2021-11-20 23:18:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:36,326 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 3978 transitions. [2021-11-20 23:18:36,326 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) [2021-11-20 23:18:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 3978 transitions. [2021-11-20 23:18:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:36,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:36,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:36,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-20 23:18:36,327 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)] === [2021-11-20 23:18:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash 384069572, now seen corresponding path program 27 times [2021-11-20 23:18:36,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:36,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805962784] [2021-11-20 23:18:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:36,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:36,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:36,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805962784] [2021-11-20 23:18:36,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805962784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:36,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:36,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:18:36,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601537446] [2021-11-20 23:18:36,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:36,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:18:36,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:18:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:18:36,563 INFO L87 Difference]: Start difference. First operand 1784 states and 3978 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) [2021-11-20 23:18:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:40,485 INFO L93 Difference]: Finished difference Result 2490 states and 5485 transitions. [2021-11-20 23:18:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 23:18:40,485 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 [2021-11-20 23:18:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:40,488 INFO L225 Difference]: With dead ends: 2490 [2021-11-20 23:18:40,488 INFO L226 Difference]: Without dead ends: 2490 [2021-11-20 23:18:40,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=714, Invalid=1836, Unknown=0, NotChecked=0, Total=2550 [2021-11-20 23:18:40,489 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 815 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 4429 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:40,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 46 Invalid, 4480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4429 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:18:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2021-11-20 23:18:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1788. [2021-11-20 23:18:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1778 states have (on average 2.2418447694038246) internal successors, (3986), 1787 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 3986 transitions. [2021-11-20 23:18:40,515 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 3986 transitions. Word has length 18 [2021-11-20 23:18:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:40,515 INFO L470 AbstractCegarLoop]: Abstraction has 1788 states and 3986 transitions. [2021-11-20 23:18:40,515 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) [2021-11-20 23:18:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 3986 transitions. [2021-11-20 23:18:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:40,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:40,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:40,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-20 23:18:40,516 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)] === [2021-11-20 23:18:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1280484284, now seen corresponding path program 28 times [2021-11-20 23:18:40,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:40,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329782303] [2021-11-20 23:18:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:40,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:40,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:40,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329782303] [2021-11-20 23:18:40,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329782303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:40,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:40,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:18:40,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447594574] [2021-11-20 23:18:40,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:40,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:18:40,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:40,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:18:40,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:18:40,755 INFO L87 Difference]: Start difference. First operand 1788 states and 3986 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) [2021-11-20 23:18:45,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:45,013 INFO L93 Difference]: Finished difference Result 2517 states and 5541 transitions. [2021-11-20 23:18:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 23:18:45,013 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 [2021-11-20 23:18:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:45,016 INFO L225 Difference]: With dead ends: 2517 [2021-11-20 23:18:45,016 INFO L226 Difference]: Without dead ends: 2517 [2021-11-20 23:18:45,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=782, Invalid=2188, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 23:18:45,017 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 870 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:45,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 46 Invalid, 5030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 23:18:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2021-11-20 23:18:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 1781. [2021-11-20 23:18:45,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1771 states have (on average 2.2422360248447206) internal successors, (3971), 1780 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 3971 transitions. [2021-11-20 23:18:45,046 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 3971 transitions. Word has length 18 [2021-11-20 23:18:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:45,046 INFO L470 AbstractCegarLoop]: Abstraction has 1781 states and 3971 transitions. [2021-11-20 23:18:45,046 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) [2021-11-20 23:18:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 3971 transitions. [2021-11-20 23:18:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:18:45,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:45,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:45,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-20 23:18:45,047 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:18:45,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash 288855043, now seen corresponding path program 1 times [2021-11-20 23:18:45,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:45,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090602888] [2021-11-20 23:18:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:45,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:45,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:45,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090602888] [2021-11-20 23:18:45,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090602888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:45,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:45,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:18:45,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122870649] [2021-11-20 23:18:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:45,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:18:45,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:18:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:18:45,395 INFO L87 Difference]: Start difference. First operand 1781 states and 3971 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) [2021-11-20 23:18:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:47,283 INFO L93 Difference]: Finished difference Result 2054 states and 4565 transitions. [2021-11-20 23:18:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:18:47,284 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 [2021-11-20 23:18:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:47,286 INFO L225 Difference]: With dead ends: 2054 [2021-11-20 23:18:47,286 INFO L226 Difference]: Without dead ends: 2054 [2021-11-20 23:18:47,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:18:47,287 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 300 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:47,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 42 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:18:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-11-20 23:18:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1823. [2021-11-20 23:18:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1813 states have (on average 2.238830667402096) internal successors, (4059), 1822 states have internal predecessors, (4059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 4059 transitions. [2021-11-20 23:18:47,310 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 4059 transitions. Word has length 18 [2021-11-20 23:18:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:47,310 INFO L470 AbstractCegarLoop]: Abstraction has 1823 states and 4059 transitions. [2021-11-20 23:18:47,310 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) [2021-11-20 23:18:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 4059 transitions. [2021-11-20 23:18:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 23:18:47,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:47,312 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:47,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-20 23:18:47,312 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)] === [2021-11-20 23:18:47,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1003280952, now seen corresponding path program 1 times [2021-11-20 23:18:47,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:47,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527882336] [2021-11-20 23:18:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:47,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:47,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:47,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527882336] [2021-11-20 23:18:47,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527882336] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:18:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515734657] [2021-11-20 23:18:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:47,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:18:47,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:18:47,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:18:47,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:18:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:47,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-20 23:18:47,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:18:48,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:48,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:48,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:48,139 INFO L354 Elim1Store]: treesize reduction 168, result has 18.4 percent of original size [2021-11-20 23:18:48,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 220 treesize of output 160 [2021-11-20 23:18:48,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:48,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:48,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:48,198 INFO L354 Elim1Store]: treesize reduction 168, result has 18.4 percent of original size [2021-11-20 23:18:48,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 160 treesize of output 100 [2021-11-20 23:18:48,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 145 [2021-11-20 23:18:49,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:49,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:49,264 INFO L354 Elim1Store]: treesize reduction 28, result has 9.7 percent of original size [2021-11-20 23:18:49,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 25 [2021-11-20 23:18:49,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:18:49,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:49,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:49,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:49,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:18:49,405 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-11-20 23:18:49,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 114 treesize of output 88 [2021-11-20 23:18:49,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:49,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:49,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:18:49,547 INFO L354 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2021-11-20 23:18:49,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 95 treesize of output 65 [2021-11-20 23:18:49,875 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:18:49,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 25 [2021-11-20 23:18:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:49,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:18:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:50,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515734657] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:18:50,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1595174316] [2021-11-20 23:18:50,632 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:18:50,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:18:50,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 29 [2021-11-20 23:18:50,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31286165] [2021-11-20 23:18:50,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:18:50,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 23:18:50,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 23:18:50,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:18:50,643 INFO L87 Difference]: Start difference. First operand 1823 states and 4059 transitions. Second operand has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:54,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:54,436 INFO L93 Difference]: Finished difference Result 2261 states and 5114 transitions. [2021-11-20 23:18:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:18:54,444 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 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 19 [2021-11-20 23:18:54,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:54,447 INFO L225 Difference]: With dead ends: 2261 [2021-11-20 23:18:54,448 INFO L226 Difference]: Without dead ends: 2261 [2021-11-20 23:18:54,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=596, Invalid=2374, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 23:18:54,449 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1051 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 4531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2687 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:54,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 67 Invalid, 4531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1811 Invalid, 0 Unknown, 2687 Unchecked, 1.8s Time] [2021-11-20 23:18:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2021-11-20 23:18:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1851. [2021-11-20 23:18:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1841 states have (on average 2.242259641499185) internal successors, (4128), 1850 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 4128 transitions. [2021-11-20 23:18:54,485 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 4128 transitions. Word has length 19 [2021-11-20 23:18:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:54,486 INFO L470 AbstractCegarLoop]: Abstraction has 1851 states and 4128 transitions. [2021-11-20 23:18:54,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 30 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:18:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 4128 transitions. [2021-11-20 23:18:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:18:54,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:54,487 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] [2021-11-20 23:18:54,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:18:54,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-11-20 23:18:54,704 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)] === [2021-11-20 23:18:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash -253695240, now seen corresponding path program 1 times [2021-11-20 23:18:54,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:54,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859940173] [2021-11-20 23:18:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:54,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:18:56,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:56,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859940173] [2021-11-20 23:18:56,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859940173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:56,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:56,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:18:56,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377048475] [2021-11-20 23:18:56,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:56,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:18:56,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:18:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:18:56,278 INFO L87 Difference]: Start difference. First operand 1851 states and 4128 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:19:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:03,646 INFO L93 Difference]: Finished difference Result 3175 states and 7085 transitions. [2021-11-20 23:19:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-20 23:19:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:19:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:03,649 INFO L225 Difference]: With dead ends: 3175 [2021-11-20 23:19:03,650 INFO L226 Difference]: Without dead ends: 3175 [2021-11-20 23:19:03,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=616, Invalid=2924, Unknown=0, NotChecked=0, Total=3540 [2021-11-20 23:19:03,650 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 993 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 4449 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 4531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:03,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 34 Invalid, 4531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4449 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 23:19:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2021-11-20 23:19:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 1917. [2021-11-20 23:19:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1907 states have (on average 2.245936025170425) internal successors, (4283), 1916 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 4283 transitions. [2021-11-20 23:19:03,677 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 4283 transitions. Word has length 20 [2021-11-20 23:19:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:03,677 INFO L470 AbstractCegarLoop]: Abstraction has 1917 states and 4283 transitions. [2021-11-20 23:19:03,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:19:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 4283 transitions. [2021-11-20 23:19:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:03,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:03,678 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] [2021-11-20 23:19:03,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-20 23:19:03,678 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)] === [2021-11-20 23:19:03,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2023279735, now seen corresponding path program 1 times [2021-11-20 23:19:03,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:03,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575058640] [2021-11-20 23:19:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:03,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:04,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:04,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575058640] [2021-11-20 23:19:04,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575058640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:04,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:04,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:19:04,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195977150] [2021-11-20 23:19:04,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:04,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:19:04,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:04,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:19:04,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:19:04,337 INFO L87 Difference]: Start difference. First operand 1917 states and 4283 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) [2021-11-20 23:19:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:08,429 INFO L93 Difference]: Finished difference Result 3405 states and 7612 transitions. [2021-11-20 23:19:08,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:19:08,430 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 [2021-11-20 23:19:08,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:08,433 INFO L225 Difference]: With dead ends: 3405 [2021-11-20 23:19:08,433 INFO L226 Difference]: Without dead ends: 3405 [2021-11-20 23:19:08,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=392, Invalid=1414, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:19:08,434 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 597 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 3566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:08,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 39 Invalid, 3566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:19:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2021-11-20 23:19:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 1951. [2021-11-20 23:19:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1941 states have (on average 2.2462648119526016) internal successors, (4360), 1950 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 4360 transitions. [2021-11-20 23:19:08,460 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 4360 transitions. Word has length 20 [2021-11-20 23:19:08,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:08,461 INFO L470 AbstractCegarLoop]: Abstraction has 1951 states and 4360 transitions. [2021-11-20 23:19:08,461 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) [2021-11-20 23:19:08,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 4360 transitions. [2021-11-20 23:19:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:08,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:08,462 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] [2021-11-20 23:19:08,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-20 23:19:08,462 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)] === [2021-11-20 23:19:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2052925846, now seen corresponding path program 2 times [2021-11-20 23:19:08,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:08,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117575237] [2021-11-20 23:19:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:08,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:09,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:09,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117575237] [2021-11-20 23:19:09,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117575237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:09,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:09,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:19:09,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26569094] [2021-11-20 23:19:09,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:09,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:19:09,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:09,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:19:09,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:19:09,878 INFO L87 Difference]: Start difference. First operand 1951 states and 4360 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:19:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:18,025 INFO L93 Difference]: Finished difference Result 3443 states and 7709 transitions. [2021-11-20 23:19:18,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-20 23:19:18,025 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:19:18,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:18,029 INFO L225 Difference]: With dead ends: 3443 [2021-11-20 23:19:18,029 INFO L226 Difference]: Without dead ends: 3443 [2021-11-20 23:19:18,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=682, Invalid=3100, Unknown=0, NotChecked=0, Total=3782 [2021-11-20 23:19:18,030 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 997 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 5402 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 5402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:18,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 50 Invalid, 5473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 5402 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 23:19:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2021-11-20 23:19:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1952. [2021-11-20 23:19:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1942 states have (on average 2.246138002059732) internal successors, (4362), 1951 states have internal predecessors, (4362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 4362 transitions. [2021-11-20 23:19:18,062 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 4362 transitions. Word has length 20 [2021-11-20 23:19:18,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:18,062 INFO L470 AbstractCegarLoop]: Abstraction has 1952 states and 4362 transitions. [2021-11-20 23:19:18,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:19:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 4362 transitions. [2021-11-20 23:19:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:18,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:18,064 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] [2021-11-20 23:19:18,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-20 23:19:18,064 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)] === [2021-11-20 23:19:18,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1943983524, now seen corresponding path program 3 times [2021-11-20 23:19:18,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:18,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998267905] [2021-11-20 23:19:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:18,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:18,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:18,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998267905] [2021-11-20 23:19:18,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998267905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:18,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:18,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:19:18,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458845000] [2021-11-20 23:19:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:18,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:19:18,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:18,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:19:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:19:18,672 INFO L87 Difference]: Start difference. First operand 1952 states and 4362 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) [2021-11-20 23:19:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:23,223 INFO L93 Difference]: Finished difference Result 3720 states and 8322 transitions. [2021-11-20 23:19:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:19:23,223 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 [2021-11-20 23:19:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:23,227 INFO L225 Difference]: With dead ends: 3720 [2021-11-20 23:19:23,228 INFO L226 Difference]: Without dead ends: 3720 [2021-11-20 23:19:23,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=431, Invalid=1639, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:19:23,228 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 667 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:23,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 35 Invalid, 4164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 4110 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 23:19:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-11-20 23:19:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 1948. [2021-11-20 23:19:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1938 states have (on average 2.2461300309597525) internal successors, (4353), 1947 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 4353 transitions. [2021-11-20 23:19:23,273 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 4353 transitions. Word has length 20 [2021-11-20 23:19:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:23,273 INFO L470 AbstractCegarLoop]: Abstraction has 1948 states and 4353 transitions. [2021-11-20 23:19:23,273 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) [2021-11-20 23:19:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 4353 transitions. [2021-11-20 23:19:23,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:23,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:23,275 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] [2021-11-20 23:19:23,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-20 23:19:23,275 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)] === [2021-11-20 23:19:23,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:23,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1809923349, now seen corresponding path program 2 times [2021-11-20 23:19:23,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:23,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089449397] [2021-11-20 23:19:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:23,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:23,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:23,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089449397] [2021-11-20 23:19:23,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089449397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:23,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:23,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:19:23,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299204158] [2021-11-20 23:19:23,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:23,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:19:23,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:23,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:19:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:19:23,941 INFO L87 Difference]: Start difference. First operand 1948 states and 4353 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) [2021-11-20 23:19:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:29,802 INFO L93 Difference]: Finished difference Result 3717 states and 8265 transitions. [2021-11-20 23:19:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 23:19:29,802 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 [2021-11-20 23:19:29,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:29,806 INFO L225 Difference]: With dead ends: 3717 [2021-11-20 23:19:29,807 INFO L226 Difference]: Without dead ends: 3717 [2021-11-20 23:19:29,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=652, Invalid=2540, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 23:19:29,807 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 809 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 4363 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 4487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 4363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:29,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 45 Invalid, 4487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 4363 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-20 23:19:29,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2021-11-20 23:19:29,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 1954. [2021-11-20 23:19:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1944 states have (on average 2.2458847736625516) internal successors, (4366), 1953 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 4366 transitions. [2021-11-20 23:19:29,841 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 4366 transitions. Word has length 20 [2021-11-20 23:19:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:29,841 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 4366 transitions. [2021-11-20 23:19:29,841 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) [2021-11-20 23:19:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 4366 transitions. [2021-11-20 23:19:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:29,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:29,842 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] [2021-11-20 23:19:29,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-20 23:19:29,842 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)] === [2021-11-20 23:19:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1619581971, now seen corresponding path program 3 times [2021-11-20 23:19:29,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:29,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984819633] [2021-11-20 23:19:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:29,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:30,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:30,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984819633] [2021-11-20 23:19:30,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984819633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:30,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:30,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:19:30,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927723948] [2021-11-20 23:19:30,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:30,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:19:30,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:30,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:19:30,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:19:30,462 INFO L87 Difference]: Start difference. First operand 1954 states and 4366 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) [2021-11-20 23:19:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:36,607 INFO L93 Difference]: Finished difference Result 3508 states and 7778 transitions. [2021-11-20 23:19:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 23:19:36,608 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 [2021-11-20 23:19:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:36,612 INFO L225 Difference]: With dead ends: 3508 [2021-11-20 23:19:36,612 INFO L226 Difference]: Without dead ends: 3508 [2021-11-20 23:19:36,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=588, Invalid=2168, Unknown=0, NotChecked=0, Total=2756 [2021-11-20 23:19:36,613 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 759 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 5267 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 5267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:36,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 50 Invalid, 5376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 5267 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-20 23:19:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2021-11-20 23:19:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 1966. [2021-11-20 23:19:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1956 states have (on average 2.245398773006135) internal successors, (4392), 1965 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 4392 transitions. [2021-11-20 23:19:36,646 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 4392 transitions. Word has length 20 [2021-11-20 23:19:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:36,646 INFO L470 AbstractCegarLoop]: Abstraction has 1966 states and 4392 transitions. [2021-11-20 23:19:36,647 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) [2021-11-20 23:19:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 4392 transitions. [2021-11-20 23:19:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:36,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:36,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:36,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-20 23:19:36,648 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)] === [2021-11-20 23:19:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash -182504775, now seen corresponding path program 4 times [2021-11-20 23:19:36,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:36,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245092739] [2021-11-20 23:19:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:36,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:36,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:36,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245092739] [2021-11-20 23:19:36,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245092739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:36,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:36,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:19:36,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672480477] [2021-11-20 23:19:36,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:36,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:19:36,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:19:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:19:36,946 INFO L87 Difference]: Start difference. First operand 1966 states and 4392 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) [2021-11-20 23:19:42,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:42,277 INFO L93 Difference]: Finished difference Result 4027 states and 8986 transitions. [2021-11-20 23:19:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-20 23:19:42,278 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 [2021-11-20 23:19:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:42,282 INFO L225 Difference]: With dead ends: 4027 [2021-11-20 23:19:42,282 INFO L226 Difference]: Without dead ends: 4027 [2021-11-20 23:19:42,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=927, Invalid=3105, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 23:19:42,283 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1157 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 4947 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 4947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:42,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 36 Invalid, 5106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 4947 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 23:19:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2021-11-20 23:19:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 2077. [2021-11-20 23:19:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2067 states have (on average 2.2564102564102564) internal successors, (4664), 2076 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 4664 transitions. [2021-11-20 23:19:42,319 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 4664 transitions. Word has length 20 [2021-11-20 23:19:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:42,319 INFO L470 AbstractCegarLoop]: Abstraction has 2077 states and 4664 transitions. [2021-11-20 23:19:42,319 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) [2021-11-20 23:19:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 4664 transitions. [2021-11-20 23:19:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:42,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:42,321 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] [2021-11-20 23:19:42,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-20 23:19:42,322 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)] === [2021-11-20 23:19:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1100454965, now seen corresponding path program 5 times [2021-11-20 23:19:42,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:42,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768114874] [2021-11-20 23:19:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:42,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:42,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768114874] [2021-11-20 23:19:42,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768114874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:42,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:42,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:19:42,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837648717] [2021-11-20 23:19:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:42,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:19:42,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:42,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:19:42,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:19:42,859 INFO L87 Difference]: Start difference. First operand 2077 states and 4664 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) [2021-11-20 23:19:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:49,416 INFO L93 Difference]: Finished difference Result 3727 states and 8370 transitions. [2021-11-20 23:19:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 23:19:49,416 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 [2021-11-20 23:19:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:49,421 INFO L225 Difference]: With dead ends: 3727 [2021-11-20 23:19:49,421 INFO L226 Difference]: Without dead ends: 3727 [2021-11-20 23:19:49,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=658, Invalid=2312, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 23:19:49,422 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 822 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 5450 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:49,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 48 Invalid, 5562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 5450 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 23:19:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2021-11-20 23:19:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 2061. [2021-11-20 23:19:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2051 states have (on average 2.258410531448074) internal successors, (4632), 2060 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:49,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 4632 transitions. [2021-11-20 23:19:49,475 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 4632 transitions. Word has length 20 [2021-11-20 23:19:49,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:49,475 INFO L470 AbstractCegarLoop]: Abstraction has 2061 states and 4632 transitions. [2021-11-20 23:19:49,475 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) [2021-11-20 23:19:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 4632 transitions. [2021-11-20 23:19:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:49,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:49,477 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] [2021-11-20 23:19:49,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-20 23:19:49,477 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)] === [2021-11-20 23:19:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash 674380111, now seen corresponding path program 6 times [2021-11-20 23:19:49,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:49,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94311244] [2021-11-20 23:19:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:49,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:49,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:49,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94311244] [2021-11-20 23:19:49,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94311244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:49,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:49,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:19:49,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009517548] [2021-11-20 23:19:49,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:49,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:19:49,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:49,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:19:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:19:49,757 INFO L87 Difference]: Start difference. First operand 2061 states and 4632 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) [2021-11-20 23:19:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:55,043 INFO L93 Difference]: Finished difference Result 4840 states and 10966 transitions. [2021-11-20 23:19:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-20 23:19:55,044 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 [2021-11-20 23:19:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:55,050 INFO L225 Difference]: With dead ends: 4840 [2021-11-20 23:19:55,050 INFO L226 Difference]: Without dead ends: 4840 [2021-11-20 23:19:55,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=999, Invalid=3161, Unknown=0, NotChecked=0, Total=4160 [2021-11-20 23:19:55,051 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1249 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 5165 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 5165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:55,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 42 Invalid, 5299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 5165 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-20 23:19:55,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2021-11-20 23:19:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 2033. [2021-11-20 23:19:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2023 states have (on average 2.2560553633217992) internal successors, (4564), 2032 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 4564 transitions. [2021-11-20 23:19:55,093 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 4564 transitions. Word has length 20 [2021-11-20 23:19:55,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:55,093 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 4564 transitions. [2021-11-20 23:19:55,093 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) [2021-11-20 23:19:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 4564 transitions. [2021-11-20 23:19:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:19:55,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:55,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:55,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-20 23:19:55,095 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)] === [2021-11-20 23:19:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash -675173584, now seen corresponding path program 4 times [2021-11-20 23:19:55,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:55,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755381315] [2021-11-20 23:19:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:55,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:56,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:56,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755381315] [2021-11-20 23:19:56,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755381315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:56,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:56,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:19:56,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502926272] [2021-11-20 23:19:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:56,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:19:56,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:56,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:19:56,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:19:56,578 INFO L87 Difference]: Start difference. First operand 2033 states and 4564 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:20:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:20:06,161 INFO L93 Difference]: Finished difference Result 3256 states and 7286 transitions. [2021-11-20 23:20:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-20 23:20:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:20:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:20:06,166 INFO L225 Difference]: With dead ends: 3256 [2021-11-20 23:20:06,166 INFO L226 Difference]: Without dead ends: 3256 [2021-11-20 23:20:06,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=806, Invalid=3616, Unknown=0, NotChecked=0, Total=4422 [2021-11-20 23:20:06,167 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1000 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 5854 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 5932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 5854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:20:06,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 51 Invalid, 5932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 5854 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-20 23:20:06,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2021-11-20 23:20:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 2090. [2021-11-20 23:20:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2080 states have (on average 2.2591346153846152) internal successors, (4699), 2089 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:20:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 4699 transitions. [2021-11-20 23:20:06,222 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 4699 transitions. Word has length 20 [2021-11-20 23:20:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:20:06,222 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 4699 transitions. [2021-11-20 23:20:06,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:20:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 4699 transitions. [2021-11-20 23:20:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:20:06,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:20:06,225 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] [2021-11-20 23:20:06,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-20 23:20:06,226 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)] === [2021-11-20 23:20:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:20:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash -784115906, now seen corresponding path program 5 times [2021-11-20 23:20:06,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:20:06,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111645472] [2021-11-20 23:20:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:20:06,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:20:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:20:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:20:06,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:20:06,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111645472] [2021-11-20 23:20:06,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111645472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:20:06,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:20:06,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:20:06,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308870802] [2021-11-20 23:20:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:20:06,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:20:06,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:20:06,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:20:06,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:20:06,885 INFO L87 Difference]: Start difference. First operand 2090 states and 4699 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) [2021-11-20 23:20:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:20:12,309 INFO L93 Difference]: Finished difference Result 3694 states and 8293 transitions. [2021-11-20 23:20:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 23:20:12,309 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 [2021-11-20 23:20:12,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:20:12,313 INFO L225 Difference]: With dead ends: 3694 [2021-11-20 23:20:12,314 INFO L226 Difference]: Without dead ends: 3694 [2021-11-20 23:20:12,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=541, Invalid=2111, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 23:20:12,314 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 738 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 4530 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 4586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 4530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:20:12,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 43 Invalid, 4586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 4530 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-20 23:20:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2021-11-20 23:20:12,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 2033. [2021-11-20 23:20:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2023 states have (on average 2.2560553633217992) internal successors, (4564), 2032 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:20:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 4564 transitions. [2021-11-20 23:20:12,352 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 4564 transitions. Word has length 20 [2021-11-20 23:20:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:20:12,353 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 4564 transitions. [2021-11-20 23:20:12,353 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) [2021-11-20 23:20:12,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 4564 transitions. [2021-11-20 23:20:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:20:12,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:20:12,354 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] [2021-11-20 23:20:12,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-20 23:20:12,354 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)] === [2021-11-20 23:20:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:20:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1894261904, now seen corresponding path program 6 times [2021-11-20 23:20:12,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:20:12,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416036922] [2021-11-20 23:20:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:20:12,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:20:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:20:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:20:12,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:20:12,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416036922] [2021-11-20 23:20:12,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416036922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:20:12,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:20:12,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:20:12,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175055732] [2021-11-20 23:20:12,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:20:12,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:20:12,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:20:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:20:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:20:12,883 INFO L87 Difference]: Start difference. First operand 2033 states and 4564 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) [2021-11-20 23:20:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:20:17,762 INFO L93 Difference]: Finished difference Result 3350 states and 7480 transitions. [2021-11-20 23:20:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 23:20:17,763 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 [2021-11-20 23:20:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:20:17,767 INFO L225 Difference]: With dead ends: 3350 [2021-11-20 23:20:17,767 INFO L226 Difference]: Without dead ends: 3350 [2021-11-20 23:20:17,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=423, Invalid=1647, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:20:17,767 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 820 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 4403 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:20:17,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 39 Invalid, 4483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4403 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 23:20:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2021-11-20 23:20:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 2033. [2021-11-20 23:20:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2023 states have (on average 2.2560553633217992) internal successors, (4564), 2032 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:20:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 4564 transitions. [2021-11-20 23:20:17,797 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 4564 transitions. Word has length 20 [2021-11-20 23:20:17,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:20:17,797 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 4564 transitions. [2021-11-20 23:20:17,798 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) [2021-11-20 23:20:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 4564 transitions. [2021-11-20 23:20:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:20:17,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:20:17,799 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] [2021-11-20 23:20:17,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-20 23:20:17,799 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)] === [2021-11-20 23:20:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:20:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1977530974, now seen corresponding path program 7 times [2021-11-20 23:20:17,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:20:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700679489] [2021-11-20 23:20:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:20:17,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:20:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:20:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:20:18,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:20:18,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700679489] [2021-11-20 23:20:18,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700679489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:20:18,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:20:18,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:20:18,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130619049] [2021-11-20 23:20:18,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:20:18,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:20:18,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:20:18,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:20:18,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:20:18,313 INFO L87 Difference]: Start difference. First operand 2033 states and 4564 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) [2021-11-20 23:20:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:20:21,968 INFO L93 Difference]: Finished difference Result 3100 states and 6909 transitions. [2021-11-20 23:20:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 23:20:21,969 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 [2021-11-20 23:20:21,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:20:21,973 INFO L225 Difference]: With dead ends: 3100 [2021-11-20 23:20:21,973 INFO L226 Difference]: Without dead ends: 3100 [2021-11-20 23:20:21,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=355, Invalid=1205, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:20:21,973 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 579 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:20:21,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 37 Invalid, 3855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3809 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:20:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2021-11-20 23:20:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2037. [2021-11-20 23:20:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2027 states have (on average 2.2565367538233843) internal successors, (4574), 2036 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:20:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 4574 transitions. [2021-11-20 23:20:22,002 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 4574 transitions. Word has length 20 [2021-11-20 23:20:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:20:22,002 INFO L470 AbstractCegarLoop]: Abstraction has 2037 states and 4574 transitions. [2021-11-20 23:20:22,002 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) [2021-11-20 23:20:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 4574 transitions. [2021-11-20 23:20:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:20:22,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:20:22,004 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:20:22,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-20 23:20:22,004 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)] === [2021-11-20 23:20:22,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:20:22,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1802425525, now seen corresponding path program 2 times [2021-11-20 23:20:22,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:20:22,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407602393] [2021-11-20 23:20:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:20:22,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:20:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:20:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:20:22,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:20:22,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407602393] [2021-11-20 23:20:22,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407602393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:20:22,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337062770] [2021-11-20 23:20:22,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:20:22,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:20:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:20:22,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:20:22,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:20:22,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 23:20:22,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:20:22,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-20 23:20:22,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:20:22,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:22,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:22,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:22,518 INFO L354 Elim1Store]: treesize reduction 168, result has 18.4 percent of original size [2021-11-20 23:20:22,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 220 treesize of output 160 [2021-11-20 23:20:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:22,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:22,566 INFO L354 Elim1Store]: treesize reduction 220, result has 18.5 percent of original size [2021-11-20 23:20:22,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 225 treesize of output 145 [2021-11-20 23:20:22,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 145 [2021-11-20 23:20:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:23,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:23,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:20:23,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:23,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:23,468 INFO L354 Elim1Store]: treesize reduction 254, result has 17.3 percent of original size [2021-11-20 23:20:23,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 205 treesize of output 155 [2021-11-20 23:20:23,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:23,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:23,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:20:23,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:23,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:23,525 INFO L354 Elim1Store]: treesize reduction 196, result has 25.8 percent of original size [2021-11-20 23:20:23,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 204 treesize of output 192 [2021-11-20 23:20:24,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:24,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:24,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:24,147 INFO L354 Elim1Store]: treesize reduction 237, result has 15.4 percent of original size [2021-11-20 23:20:24,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 270 treesize of output 232 [2021-11-20 23:20:24,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:24,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:24,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:24,212 INFO L354 Elim1Store]: treesize reduction 230, result has 12.9 percent of original size [2021-11-20 23:20:24,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 235 treesize of output 141 [2021-11-20 23:20:24,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:24,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:20:24,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 110 [2021-11-20 23:20:24,808 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:20:24,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 38 [2021-11-20 23:20:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:20:24,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:21:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:00,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337062770] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:21:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1334136801] [2021-11-20 23:21:00,364 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:21:00,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:21:00,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 33 [2021-11-20 23:21:00,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281380446] [2021-11-20 23:21:00,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:21:00,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-20 23:21:00,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-20 23:21:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=946, Unknown=14, NotChecked=0, Total=1190 [2021-11-20 23:21:00,366 INFO L87 Difference]: Start difference. First operand 2037 states and 4574 transitions. Second operand has 35 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:12,119 INFO L93 Difference]: Finished difference Result 5674 states and 12895 transitions. [2021-11-20 23:21:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-20 23:21:12,119 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2021-11-20 23:21:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:12,127 INFO L225 Difference]: With dead ends: 5674 [2021-11-20 23:21:12,127 INFO L226 Difference]: Without dead ends: 5674 [2021-11-20 23:21:12,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 53 SyntacticMatches, 20 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=1741, Invalid=6255, Unknown=14, NotChecked=0, Total=8010 [2021-11-20 23:21:12,128 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1097 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2641 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:12,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 53 Invalid, 6707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 4012 Invalid, 0 Unknown, 2641 Unchecked, 4.2s Time] [2021-11-20 23:21:12,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2021-11-20 23:21:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 2407. [2021-11-20 23:21:12,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2397 states have (on average 2.2636629119733) internal successors, (5426), 2406 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 5426 transitions. [2021-11-20 23:21:12,216 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 5426 transitions. Word has length 20 [2021-11-20 23:21:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:12,216 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 5426 transitions. [2021-11-20 23:21:12,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 5426 transitions. [2021-11-20 23:21:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:21:12,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:12,218 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] [2021-11-20 23:21:12,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 23:21:12,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-11-20 23:21:12,422 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)] === [2021-11-20 23:21:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1019437688, now seen corresponding path program 8 times [2021-11-20 23:21:12,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:12,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437362211] [2021-11-20 23:21:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:12,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:13,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:13,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437362211] [2021-11-20 23:21:13,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437362211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:13,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:13,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:21:13,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078703114] [2021-11-20 23:21:13,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:13,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:21:13,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:21:13,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:21:13,281 INFO L87 Difference]: Start difference. First operand 2407 states and 5426 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) [2021-11-20 23:21:20,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:20,201 INFO L93 Difference]: Finished difference Result 4042 states and 9123 transitions. [2021-11-20 23:21:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:21:20,201 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 [2021-11-20 23:21:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:20,206 INFO L225 Difference]: With dead ends: 4042 [2021-11-20 23:21:20,206 INFO L226 Difference]: Without dead ends: 4042 [2021-11-20 23:21:20,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=415, Invalid=1655, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:21:20,207 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 823 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 4574 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:20,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 37 Invalid, 4644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 4574 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 23:21:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4042 states. [2021-11-20 23:21:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4042 to 2407. [2021-11-20 23:21:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2397 states have (on average 2.2636629119733) internal successors, (5426), 2406 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 5426 transitions. [2021-11-20 23:21:20,254 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 5426 transitions. Word has length 20 [2021-11-20 23:21:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:20,254 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 5426 transitions. [2021-11-20 23:21:20,254 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) [2021-11-20 23:21:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 5426 transitions. [2021-11-20 23:21:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:21:20,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:20,256 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] [2021-11-20 23:21:20,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-20 23:21:20,256 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)] === [2021-11-20 23:21:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1728066385, now seen corresponding path program 7 times [2021-11-20 23:21:20,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:20,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815589999] [2021-11-20 23:21:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:20,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:20,851 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:20,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815589999] [2021-11-20 23:21:20,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815589999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:20,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:20,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:21:20,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551440364] [2021-11-20 23:21:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:20,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:21:20,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:21:20,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:21:20,853 INFO L87 Difference]: Start difference. First operand 2407 states and 5426 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) [2021-11-20 23:21:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:26,664 INFO L93 Difference]: Finished difference Result 3736 states and 8400 transitions. [2021-11-20 23:21:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 23:21:26,664 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 [2021-11-20 23:21:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:26,669 INFO L225 Difference]: With dead ends: 3736 [2021-11-20 23:21:26,669 INFO L226 Difference]: Without dead ends: 3736 [2021-11-20 23:21:26,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=386, Invalid=1870, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:21:26,670 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 754 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 4431 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 4512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 4431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:26,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 40 Invalid, 4512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 4431 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 23:21:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-11-20 23:21:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 2436. [2021-11-20 23:21:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2426 states have (on average 2.2642209398186317) internal successors, (5493), 2435 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 5493 transitions. [2021-11-20 23:21:26,717 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 5493 transitions. Word has length 20 [2021-11-20 23:21:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:26,718 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 5493 transitions. [2021-11-20 23:21:26,718 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) [2021-11-20 23:21:26,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 5493 transitions. [2021-11-20 23:21:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:21:26,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:26,719 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] [2021-11-20 23:21:26,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-20 23:21:26,720 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)] === [2021-11-20 23:21:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1918407763, now seen corresponding path program 8 times [2021-11-20 23:21:26,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:26,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022567025] [2021-11-20 23:21:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:26,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:27,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:27,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022567025] [2021-11-20 23:21:27,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022567025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:27,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:27,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:21:27,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709248897] [2021-11-20 23:21:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:27,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:21:27,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:21:27,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:21:27,297 INFO L87 Difference]: Start difference. First operand 2436 states and 5493 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) [2021-11-20 23:21:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:33,389 INFO L93 Difference]: Finished difference Result 3578 states and 8023 transitions. [2021-11-20 23:21:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:21:33,389 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 [2021-11-20 23:21:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:33,394 INFO L225 Difference]: With dead ends: 3578 [2021-11-20 23:21:33,394 INFO L226 Difference]: Without dead ends: 3578 [2021-11-20 23:21:33,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 23:21:33,394 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 741 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 5122 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 5194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 5122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:33,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 44 Invalid, 5194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 5122 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 23:21:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2021-11-20 23:21:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 2440. [2021-11-20 23:21:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2430 states have (on average 2.264609053497942) internal successors, (5503), 2439 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 5503 transitions. [2021-11-20 23:21:33,428 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 5503 transitions. Word has length 20 [2021-11-20 23:21:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:33,428 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 5503 transitions. [2021-11-20 23:21:33,429 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) [2021-11-20 23:21:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 5503 transitions. [2021-11-20 23:21:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:21:33,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:33,430 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] [2021-11-20 23:21:33,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-20 23:21:33,430 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)] === [2021-11-20 23:21:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash 574472787, now seen corresponding path program 9 times [2021-11-20 23:21:33,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:33,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758383742] [2021-11-20 23:21:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:33,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:33,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:33,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758383742] [2021-11-20 23:21:33,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758383742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:33,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:33,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:21:33,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058254730] [2021-11-20 23:21:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:33,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:21:33,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:33,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:21:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:21:33,766 INFO L87 Difference]: Start difference. First operand 2440 states and 5503 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) [2021-11-20 23:21:38,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:38,512 INFO L93 Difference]: Finished difference Result 3460 states and 7762 transitions. [2021-11-20 23:21:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-20 23:21:38,513 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 [2021-11-20 23:21:38,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:38,518 INFO L225 Difference]: With dead ends: 3460 [2021-11-20 23:21:38,518 INFO L226 Difference]: Without dead ends: 3460 [2021-11-20 23:21:38,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=427, Invalid=1925, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 23:21:38,518 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 881 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 4628 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 4700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:38,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 40 Invalid, 4700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4628 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-20 23:21:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2021-11-20 23:21:38,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 2456. [2021-11-20 23:21:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2446 states have (on average 2.2641046606704824) internal successors, (5538), 2455 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 5538 transitions. [2021-11-20 23:21:38,556 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 5538 transitions. Word has length 20 [2021-11-20 23:21:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:38,557 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 5538 transitions. [2021-11-20 23:21:38,557 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) [2021-11-20 23:21:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 5538 transitions. [2021-11-20 23:21:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:21:38,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:38,559 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] [2021-11-20 23:21:38,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-20 23:21:38,559 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:21:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash -343477403, now seen corresponding path program 10 times [2021-11-20 23:21:38,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:38,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618034515] [2021-11-20 23:21:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:38,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:39,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618034515] [2021-11-20 23:21:39,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618034515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:39,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:39,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:21:39,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328499682] [2021-11-20 23:21:39,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:39,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:21:39,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:39,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:21:39,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:21:39,110 INFO L87 Difference]: Start difference. First operand 2456 states and 5538 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) [2021-11-20 23:21:45,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:45,767 INFO L93 Difference]: Finished difference Result 3684 states and 8301 transitions. [2021-11-20 23:21:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:21:45,768 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 [2021-11-20 23:21:45,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:45,773 INFO L225 Difference]: With dead ends: 3684 [2021-11-20 23:21:45,773 INFO L226 Difference]: Without dead ends: 3684 [2021-11-20 23:21:45,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=395, Invalid=1767, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 23:21:45,774 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 803 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 5338 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 5409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 5338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:45,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 44 Invalid, 5409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 5338 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 23:21:45,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-11-20 23:21:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 2456. [2021-11-20 23:21:45,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2446 states have (on average 2.2641046606704824) internal successors, (5538), 2455 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 5538 transitions. [2021-11-20 23:21:45,813 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 5538 transitions. Word has length 20 [2021-11-20 23:21:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:45,813 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 5538 transitions. [2021-11-20 23:21:45,813 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) [2021-11-20 23:21:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 5538 transitions. [2021-11-20 23:21:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:21:45,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:45,815 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] [2021-11-20 23:21:45,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-20 23:21:45,815 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)] === [2021-11-20 23:21:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1431357673, now seen corresponding path program 11 times [2021-11-20 23:21:45,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:45,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395869617] [2021-11-20 23:21:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:45,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:46,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:46,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395869617] [2021-11-20 23:21:46,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395869617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:46,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:46,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:21:46,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144091743] [2021-11-20 23:21:46,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:46,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:21:46,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:46,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:21:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:21:46,125 INFO L87 Difference]: Start difference. First operand 2456 states and 5538 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) [2021-11-20 23:21:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:50,971 INFO L93 Difference]: Finished difference Result 3738 states and 8422 transitions. [2021-11-20 23:21:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 23:21:50,971 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 [2021-11-20 23:21:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:50,976 INFO L225 Difference]: With dead ends: 3738 [2021-11-20 23:21:50,976 INFO L226 Difference]: Without dead ends: 3738 [2021-11-20 23:21:50,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 23:21:50,976 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 971 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 4792 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 4849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:50,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 44 Invalid, 4849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4792 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-20 23:21:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2021-11-20 23:21:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2435. [2021-11-20 23:21:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2425 states have (on average 2.2622680412371134) internal successors, (5486), 2434 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 5486 transitions. [2021-11-20 23:21:51,015 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 5486 transitions. Word has length 20 [2021-11-20 23:21:51,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:51,015 INFO L470 AbstractCegarLoop]: Abstraction has 2435 states and 5486 transitions. [2021-11-20 23:21:51,015 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) [2021-11-20 23:21:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 5486 transitions. [2021-11-20 23:21:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:21:51,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:51,017 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] [2021-11-20 23:21:51,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-20 23:21:51,017 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)] === [2021-11-20 23:21:51,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1656742391, now seen corresponding path program 12 times [2021-11-20 23:21:51,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:51,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605428222] [2021-11-20 23:21:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:51,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:51,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605428222] [2021-11-20 23:21:51,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605428222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:51,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:51,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:21:51,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8122861] [2021-11-20 23:21:51,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:51,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:21:51,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:21:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:21:51,574 INFO L87 Difference]: Start difference. First operand 2435 states and 5486 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) [2021-11-20 23:21:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:57,435 INFO L93 Difference]: Finished difference Result 3548 states and 7959 transitions. [2021-11-20 23:21:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:21:57,435 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 [2021-11-20 23:21:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:57,440 INFO L225 Difference]: With dead ends: 3548 [2021-11-20 23:21:57,440 INFO L226 Difference]: Without dead ends: 3548 [2021-11-20 23:21:57,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=412, Invalid=1394, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:21:57,441 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 687 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 4489 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 4489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:57,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 42 Invalid, 4570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 4489 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 23:21:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2021-11-20 23:21:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 2454. [2021-11-20 23:21:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 2444 states have (on average 2.263911620294599) internal successors, (5533), 2453 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:21:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 5533 transitions. [2021-11-20 23:21:57,479 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 5533 transitions. Word has length 20 [2021-11-20 23:21:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:57,479 INFO L470 AbstractCegarLoop]: Abstraction has 2454 states and 5533 transitions. [2021-11-20 23:21:57,479 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) [2021-11-20 23:21:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 5533 transitions. [2021-11-20 23:21:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:21:57,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:57,481 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] [2021-11-20 23:21:57,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-20 23:21:57,481 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)] === [2021-11-20 23:21:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash -145344355, now seen corresponding path program 13 times [2021-11-20 23:21:57,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:57,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263780481] [2021-11-20 23:21:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:57,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:21:57,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:57,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263780481] [2021-11-20 23:21:57,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263780481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:57,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:57,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:21:57,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101272323] [2021-11-20 23:21:57,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:57,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:21:57,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:21:57,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:21:57,862 INFO L87 Difference]: Start difference. First operand 2454 states and 5533 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) [2021-11-20 23:22:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:02,523 INFO L93 Difference]: Finished difference Result 3552 states and 7957 transitions. [2021-11-20 23:22:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:22:02,523 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 [2021-11-20 23:22:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:02,528 INFO L225 Difference]: With dead ends: 3552 [2021-11-20 23:22:02,528 INFO L226 Difference]: Without dead ends: 3552 [2021-11-20 23:22:02,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=466, Invalid=1340, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:22:02,528 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 769 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 3979 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:02,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 42 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3979 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 23:22:02,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2021-11-20 23:22:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 2456. [2021-11-20 23:22:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2446 states have (on average 2.2641046606704824) internal successors, (5538), 2455 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 5538 transitions. [2021-11-20 23:22:02,566 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 5538 transitions. Word has length 20 [2021-11-20 23:22:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:02,566 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 5538 transitions. [2021-11-20 23:22:02,566 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) [2021-11-20 23:22:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 5538 transitions. [2021-11-20 23:22:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:02,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:02,568 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] [2021-11-20 23:22:02,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-20 23:22:02,568 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)] === [2021-11-20 23:22:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1063294545, now seen corresponding path program 14 times [2021-11-20 23:22:02,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:02,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598026845] [2021-11-20 23:22:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:02,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:03,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:03,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598026845] [2021-11-20 23:22:03,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598026845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:03,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:03,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:22:03,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683336218] [2021-11-20 23:22:03,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:03,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:22:03,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:03,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:22:03,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:22:03,124 INFO L87 Difference]: Start difference. First operand 2456 states and 5538 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) [2021-11-20 23:22:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:09,962 INFO L93 Difference]: Finished difference Result 3776 states and 8496 transitions. [2021-11-20 23:22:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:22:09,962 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 [2021-11-20 23:22:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:09,967 INFO L225 Difference]: With dead ends: 3776 [2021-11-20 23:22:09,968 INFO L226 Difference]: Without dead ends: 3776 [2021-11-20 23:22:09,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 23:22:09,968 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 776 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 4718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:09,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 44 Invalid, 4718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4638 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 23:22:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-11-20 23:22:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 2456. [2021-11-20 23:22:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2446 states have (on average 2.2641046606704824) internal successors, (5538), 2455 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 5538 transitions. [2021-11-20 23:22:10,007 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 5538 transitions. Word has length 20 [2021-11-20 23:22:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:10,007 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 5538 transitions. [2021-11-20 23:22:10,008 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) [2021-11-20 23:22:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 5538 transitions. [2021-11-20 23:22:10,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:10,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:10,011 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] [2021-11-20 23:22:10,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-20 23:22:10,011 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)] === [2021-11-20 23:22:10,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash 711540531, now seen corresponding path program 15 times [2021-11-20 23:22:10,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:10,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628549163] [2021-11-20 23:22:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:10,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:10,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:10,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628549163] [2021-11-20 23:22:10,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628549163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:10,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:10,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:22:10,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903717341] [2021-11-20 23:22:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:10,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:22:10,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:22:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:22:10,373 INFO L87 Difference]: Start difference. First operand 2456 states and 5538 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) [2021-11-20 23:22:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:14,637 INFO L93 Difference]: Finished difference Result 3830 states and 8617 transitions. [2021-11-20 23:22:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:22:14,638 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 [2021-11-20 23:22:14,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:14,643 INFO L225 Difference]: With dead ends: 3830 [2021-11-20 23:22:14,643 INFO L226 Difference]: Without dead ends: 3830 [2021-11-20 23:22:14,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=442, Invalid=1364, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:22:14,644 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 855 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3897 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:14,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 42 Invalid, 3956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3897 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 23:22:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2021-11-20 23:22:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 2421. [2021-11-20 23:22:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2411 states have (on average 2.2629614267938614) internal successors, (5456), 2420 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 5456 transitions. [2021-11-20 23:22:14,684 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 5456 transitions. Word has length 20 [2021-11-20 23:22:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:14,685 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 5456 transitions. [2021-11-20 23:22:14,685 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) [2021-11-20 23:22:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 5456 transitions. [2021-11-20 23:22:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:14,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:14,686 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] [2021-11-20 23:22:14,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-20 23:22:14,687 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)] === [2021-11-20 23:22:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -217471049, now seen corresponding path program 16 times [2021-11-20 23:22:14,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:14,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623942844] [2021-11-20 23:22:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:14,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:15,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:15,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623942844] [2021-11-20 23:22:15,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623942844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:15,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:15,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:22:15,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135044675] [2021-11-20 23:22:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:15,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:22:15,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:22:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:22:15,062 INFO L87 Difference]: Start difference. First operand 2421 states and 5456 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) [2021-11-20 23:22:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:19,760 INFO L93 Difference]: Finished difference Result 3480 states and 7799 transitions. [2021-11-20 23:22:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:22:19,761 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 [2021-11-20 23:22:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:19,765 INFO L225 Difference]: With dead ends: 3480 [2021-11-20 23:22:19,765 INFO L226 Difference]: Without dead ends: 3480 [2021-11-20 23:22:19,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=462, Invalid=1430, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 23:22:19,766 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 740 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 4317 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 4383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:19,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 46 Invalid, 4383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 4317 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-20 23:22:19,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-11-20 23:22:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2415. [2021-11-20 23:22:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2405 states have (on average 2.2632016632016634) internal successors, (5443), 2414 states have internal predecessors, (5443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 5443 transitions. [2021-11-20 23:22:19,803 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 5443 transitions. Word has length 20 [2021-11-20 23:22:19,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:19,803 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 5443 transitions. [2021-11-20 23:22:19,803 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) [2021-11-20 23:22:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 5443 transitions. [2021-11-20 23:22:19,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:19,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:19,805 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] [2021-11-20 23:22:19,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-20 23:22:19,806 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:22:19,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:19,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1135421239, now seen corresponding path program 17 times [2021-11-20 23:22:19,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:19,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158936385] [2021-11-20 23:22:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:19,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:20,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:20,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158936385] [2021-11-20 23:22:20,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158936385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:20,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:20,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:22:20,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688389351] [2021-11-20 23:22:20,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:20,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:22:20,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:22:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:22:20,350 INFO L87 Difference]: Start difference. First operand 2415 states and 5443 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) [2021-11-20 23:22:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:27,826 INFO L93 Difference]: Finished difference Result 3707 states and 8335 transitions. [2021-11-20 23:22:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:22:27,826 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 [2021-11-20 23:22:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:27,830 INFO L225 Difference]: With dead ends: 3707 [2021-11-20 23:22:27,831 INFO L226 Difference]: Without dead ends: 3707 [2021-11-20 23:22:27,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:22:27,831 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 773 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 5642 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 5642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:27,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 50 Invalid, 5722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 5642 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 23:22:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2021-11-20 23:22:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 2429. [2021-11-20 23:22:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2419 states have (on average 2.2653989251756923) internal successors, (5480), 2428 states have internal predecessors, (5480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 5480 transitions. [2021-11-20 23:22:27,868 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 5480 transitions. Word has length 20 [2021-11-20 23:22:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:27,868 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 5480 transitions. [2021-11-20 23:22:27,868 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) [2021-11-20 23:22:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 5480 transitions. [2021-11-20 23:22:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:27,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:27,869 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] [2021-11-20 23:22:27,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-20 23:22:27,870 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)] === [2021-11-20 23:22:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 639413837, now seen corresponding path program 18 times [2021-11-20 23:22:27,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:27,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194475975] [2021-11-20 23:22:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:27,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:28,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194475975] [2021-11-20 23:22:28,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194475975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:28,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:28,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:22:28,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419858640] [2021-11-20 23:22:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:28,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:22:28,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:22:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:22:28,177 INFO L87 Difference]: Start difference. First operand 2429 states and 5480 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) [2021-11-20 23:22:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:32,645 INFO L93 Difference]: Finished difference Result 3737 states and 8405 transitions. [2021-11-20 23:22:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:22:32,646 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 [2021-11-20 23:22:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:32,651 INFO L225 Difference]: With dead ends: 3737 [2021-11-20 23:22:32,651 INFO L226 Difference]: Without dead ends: 3737 [2021-11-20 23:22:32,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=467, Invalid=1513, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:22:32,652 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 929 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 3978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:32,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 40 Invalid, 3978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 23:22:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-20 23:22:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 2414. [2021-11-20 23:22:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2404 states have (on average 2.2633111480865225) internal successors, (5441), 2413 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 5441 transitions. [2021-11-20 23:22:32,691 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 5441 transitions. Word has length 20 [2021-11-20 23:22:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:32,691 INFO L470 AbstractCegarLoop]: Abstraction has 2414 states and 5441 transitions. [2021-11-20 23:22:32,691 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) [2021-11-20 23:22:32,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 5441 transitions. [2021-11-20 23:22:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:32,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:32,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:22:32,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-20 23:22:32,693 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)] === [2021-11-20 23:22:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash -672027785, now seen corresponding path program 19 times [2021-11-20 23:22:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:32,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213780765] [2021-11-20 23:22:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:32,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:33,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:33,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213780765] [2021-11-20 23:22:33,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213780765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:33,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:33,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:22:33,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138191689] [2021-11-20 23:22:33,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:33,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:22:33,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:22:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:22:33,053 INFO L87 Difference]: Start difference. First operand 2414 states and 5441 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) [2021-11-20 23:22:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:38,948 INFO L93 Difference]: Finished difference Result 4194 states and 9431 transitions. [2021-11-20 23:22:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 23:22:38,949 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 [2021-11-20 23:22:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:38,955 INFO L225 Difference]: With dead ends: 4194 [2021-11-20 23:22:38,955 INFO L226 Difference]: Without dead ends: 4194 [2021-11-20 23:22:38,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=717, Invalid=2039, Unknown=0, NotChecked=0, Total=2756 [2021-11-20 23:22:38,955 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1238 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 5040 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 5040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:38,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 44 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 5040 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 23:22:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2021-11-20 23:22:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 2459. [2021-11-20 23:22:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2449 states have (on average 2.263372805226623) internal successors, (5543), 2458 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 5543 transitions. [2021-11-20 23:22:38,999 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 5543 transitions. Word has length 20 [2021-11-20 23:22:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:38,999 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 5543 transitions. [2021-11-20 23:22:38,999 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) [2021-11-20 23:22:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 5543 transitions. [2021-11-20 23:22:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:39,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:39,001 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] [2021-11-20 23:22:39,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-20 23:22:39,001 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)] === [2021-11-20 23:22:39,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:39,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1789051247, now seen corresponding path program 20 times [2021-11-20 23:22:39,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:39,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590116972] [2021-11-20 23:22:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:39,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:39,553 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:39,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590116972] [2021-11-20 23:22:39,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590116972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:39,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:39,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:22:39,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678739757] [2021-11-20 23:22:39,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:39,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:22:39,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:39,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:22:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:22:39,555 INFO L87 Difference]: Start difference. First operand 2459 states and 5543 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) [2021-11-20 23:22:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:48,096 INFO L93 Difference]: Finished difference Result 3803 states and 8554 transitions. [2021-11-20 23:22:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 23:22:48,097 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 [2021-11-20 23:22:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:48,102 INFO L225 Difference]: With dead ends: 3803 [2021-11-20 23:22:48,102 INFO L226 Difference]: Without dead ends: 3803 [2021-11-20 23:22:48,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=548, Invalid=1902, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 23:22:48,103 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 760 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 5948 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 6026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 5948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:48,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 48 Invalid, 6026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 5948 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 23:22:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2021-11-20 23:22:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 2466. [2021-11-20 23:22:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2456 states have (on average 2.2658794788273617) internal successors, (5565), 2465 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 5565 transitions. [2021-11-20 23:22:48,142 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 5565 transitions. Word has length 20 [2021-11-20 23:22:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 5565 transitions. [2021-11-20 23:22:48,143 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) [2021-11-20 23:22:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 5565 transitions. [2021-11-20 23:22:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:48,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:48,144 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] [2021-11-20 23:22:48,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-20 23:22:48,144 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)] === [2021-11-20 23:22:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:48,144 INFO L85 PathProgramCache]: Analyzing trace with hash -731080973, now seen corresponding path program 21 times [2021-11-20 23:22:48,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:48,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961972696] [2021-11-20 23:22:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:48,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:48,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:48,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961972696] [2021-11-20 23:22:48,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961972696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:48,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:48,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:22:48,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695025701] [2021-11-20 23:22:48,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:48,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:22:48,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:48,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:22:48,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:22:48,557 INFO L87 Difference]: Start difference. First operand 2466 states and 5565 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) [2021-11-20 23:22:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:54,474 INFO L93 Difference]: Finished difference Result 3685 states and 8272 transitions. [2021-11-20 23:22:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 23:22:54,474 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 [2021-11-20 23:22:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:54,479 INFO L225 Difference]: With dead ends: 3685 [2021-11-20 23:22:54,479 INFO L226 Difference]: Without dead ends: 3685 [2021-11-20 23:22:54,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=689, Invalid=2067, Unknown=0, NotChecked=0, Total=2756 [2021-11-20 23:22:54,479 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1092 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5281 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 5281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:54,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 46 Invalid, 5350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 5281 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 23:22:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2021-11-20 23:22:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 2438. [2021-11-20 23:22:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2428 states have (on average 2.2635914332784184) internal successors, (5496), 2437 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:22:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 5496 transitions. [2021-11-20 23:22:54,539 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 5496 transitions. Word has length 20 [2021-11-20 23:22:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:54,539 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 5496 transitions. [2021-11-20 23:22:54,539 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) [2021-11-20 23:22:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 5496 transitions. [2021-11-20 23:22:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:22:54,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:54,540 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:22:54,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-20 23:22:54,540 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)] === [2021-11-20 23:22:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash 745925985, now seen corresponding path program 3 times [2021-11-20 23:22:54,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:54,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632789861] [2021-11-20 23:22:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:54,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:54,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:54,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632789861] [2021-11-20 23:22:54,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632789861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:22:54,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127253382] [2021-11-20 23:22:54,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:22:54,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:22:54,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:22:54,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:22:54,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:22:54,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:22:54,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:22:54,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-20 23:22:54,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:22:55,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,070 INFO L354 Elim1Store]: treesize reduction 168, result has 18.4 percent of original size [2021-11-20 23:22:55,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 220 treesize of output 160 [2021-11-20 23:22:55,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,127 INFO L354 Elim1Store]: treesize reduction 220, result has 18.5 percent of original size [2021-11-20 23:22:55,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 225 treesize of output 145 [2021-11-20 23:22:55,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 145 [2021-11-20 23:22:55,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,820 INFO L354 Elim1Store]: treesize reduction 28, result has 9.7 percent of original size [2021-11-20 23:22:55,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 25 [2021-11-20 23:22:55,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:22:55,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:55,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:22:55,964 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-11-20 23:22:55,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 114 treesize of output 88 [2021-11-20 23:22:56,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:56,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:56,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:22:56,083 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:22:56,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 62 [2021-11-20 23:22:56,293 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:22:56,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 25 [2021-11-20 23:22:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:56,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:22:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:22:56,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127253382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:22:56,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [37848150] [2021-11-20 23:22:56,877 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:22:56,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:22:56,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 29 [2021-11-20 23:22:56,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674568514] [2021-11-20 23:22:56,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:22:56,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 23:22:56,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:56,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 23:22:56,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:22:56,880 INFO L87 Difference]: Start difference. First operand 2438 states and 5496 transitions. Second operand has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:23:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:05,669 INFO L93 Difference]: Finished difference Result 4873 states and 11126 transitions. [2021-11-20 23:23:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-20 23:23:05,670 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2021-11-20 23:23:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:05,676 INFO L225 Difference]: With dead ends: 4873 [2021-11-20 23:23:05,676 INFO L226 Difference]: Without dead ends: 4873 [2021-11-20 23:23:05,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1338, Invalid=5142, Unknown=0, NotChecked=0, Total=6480 [2021-11-20 23:23:05,677 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1463 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 4082 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 6202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 4082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2025 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:05,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 47 Invalid, 6202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 4082 Invalid, 0 Unknown, 2025 Unchecked, 4.1s Time] [2021-11-20 23:23:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2021-11-20 23:23:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 2420. [2021-11-20 23:23:05,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2410 states have (on average 2.262240663900415) internal successors, (5452), 2419 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:23:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 5452 transitions. [2021-11-20 23:23:05,726 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 5452 transitions. Word has length 20 [2021-11-20 23:23:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:05,727 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 5452 transitions. [2021-11-20 23:23:05,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:23:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 5452 transitions. [2021-11-20 23:23:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:23:05,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:23:05,728 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] [2021-11-20 23:23:05,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:23:05,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:23:05,929 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)] === [2021-11-20 23:23:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:23:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 548013884, now seen corresponding path program 9 times [2021-11-20 23:23:05,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:23:05,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090846174] [2021-11-20 23:23:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:23:05,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:23:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:23:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:23:07,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:23:07,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090846174] [2021-11-20 23:23:07,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090846174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:23:07,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:23:07,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:23:07,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273865387] [2021-11-20 23:23:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:23:07,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:23:07,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:23:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:23:07,656 INFO L87 Difference]: Start difference. First operand 2420 states and 5452 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:23:18,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:18,193 INFO L93 Difference]: Finished difference Result 4041 states and 9064 transitions. [2021-11-20 23:23:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 23:23:18,194 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:23:18,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:18,200 INFO L225 Difference]: With dead ends: 4041 [2021-11-20 23:23:18,200 INFO L226 Difference]: Without dead ends: 4041 [2021-11-20 23:23:18,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=635, Invalid=2787, Unknown=0, NotChecked=0, Total=3422 [2021-11-20 23:23:18,201 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 853 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 5787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:18,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 55 Invalid, 5787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 5716 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:23:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4041 states. [2021-11-20 23:23:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4041 to 2505. [2021-11-20 23:23:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2495 states have (on average 2.2693386773547095) internal successors, (5662), 2504 states have internal predecessors, (5662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:23:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 5662 transitions. [2021-11-20 23:23:18,246 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 5662 transitions. Word has length 20 [2021-11-20 23:23:18,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:18,246 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 5662 transitions. [2021-11-20 23:23:18,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:23:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 5662 transitions. [2021-11-20 23:23:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:23:18,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:23:18,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:23:18,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-20 23:23:18,248 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:23:18,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:23:18,248 INFO L85 PathProgramCache]: Analyzing trace with hash 271333909, now seen corresponding path program 1 times [2021-11-20 23:23:18,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:23:18,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479919273] [2021-11-20 23:23:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:23:18,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:23:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:23:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:23:18,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:23:18,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479919273] [2021-11-20 23:23:18,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479919273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:23:18,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:23:18,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:23:18,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001538658] [2021-11-20 23:23:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:23:18,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:23:18,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:23:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:23:18,500 INFO L87 Difference]: Start difference. First operand 2505 states and 5662 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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) [2021-11-20 23:23:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:20,402 INFO L93 Difference]: Finished difference Result 3867 states and 8726 transitions. [2021-11-20 23:23:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:23:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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 [2021-11-20 23:23:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:20,420 INFO L225 Difference]: With dead ends: 3867 [2021-11-20 23:23:20,421 INFO L226 Difference]: Without dead ends: 3710 [2021-11-20 23:23:20,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:23:20,422 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 380 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:20,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 49 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:23:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2021-11-20 23:23:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 2811. [2021-11-20 23:23:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2801 states have (on average 2.305248125669404) internal successors, (6457), 2810 states have internal predecessors, (6457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:23:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 6457 transitions. [2021-11-20 23:23:20,490 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 6457 transitions. Word has length 20 [2021-11-20 23:23:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:20,490 INFO L470 AbstractCegarLoop]: Abstraction has 2811 states and 6457 transitions. [2021-11-20 23:23:20,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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) [2021-11-20 23:23:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 6457 transitions. [2021-11-20 23:23:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:23:20,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:23:20,493 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] [2021-11-20 23:23:20,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-20 23:23:20,494 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)] === [2021-11-20 23:23:20,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:23:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash -526971828, now seen corresponding path program 10 times [2021-11-20 23:23:20,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:23:20,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096979775] [2021-11-20 23:23:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:23:20,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:23:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:23:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:23:22,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:23:22,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096979775] [2021-11-20 23:23:22,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096979775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:23:22,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:23:22,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:23:22,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178600697] [2021-11-20 23:23:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:23:22,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:23:22,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:23:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:23:22,134 INFO L87 Difference]: Start difference. First operand 2811 states and 6457 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:23:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:32,417 INFO L93 Difference]: Finished difference Result 4793 states and 10940 transitions. [2021-11-20 23:23:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-20 23:23:32,418 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:23:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:32,426 INFO L225 Difference]: With dead ends: 4793 [2021-11-20 23:23:32,426 INFO L226 Difference]: Without dead ends: 4793 [2021-11-20 23:23:32,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=640, Invalid=2900, Unknown=0, NotChecked=0, Total=3540 [2021-11-20 23:23:32,426 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 879 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 5604 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 5664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 5604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:32,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 51 Invalid, 5664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 5604 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:23:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2021-11-20 23:23:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 2814. [2021-11-20 23:23:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2804 states have (on average 2.30527817403709) internal successors, (6464), 2813 states have internal predecessors, (6464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:23:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 6464 transitions. [2021-11-20 23:23:32,474 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 6464 transitions. Word has length 20 [2021-11-20 23:23:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:32,475 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 6464 transitions. [2021-11-20 23:23:32,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:23:32,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 6464 transitions. [2021-11-20 23:23:32,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:23:32,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:23:32,476 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] [2021-11-20 23:23:32,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-20 23:23:32,477 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)] === [2021-11-20 23:23:32,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:23:32,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1779649258, now seen corresponding path program 11 times [2021-11-20 23:23:32,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:23:32,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091268840] [2021-11-20 23:23:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:23:32,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:23:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:23:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:23:34,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:23:34,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091268840] [2021-11-20 23:23:34,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091268840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:23:34,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:23:34,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:23:34,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511448459] [2021-11-20 23:23:34,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:23:34,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:23:34,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:23:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:23:34,382 INFO L87 Difference]: Start difference. First operand 2814 states and 6464 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:23:44,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:44,302 INFO L93 Difference]: Finished difference Result 4720 states and 10755 transitions. [2021-11-20 23:23:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-20 23:23:44,302 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:23:44,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:44,310 INFO L225 Difference]: With dead ends: 4720 [2021-11-20 23:23:44,310 INFO L226 Difference]: Without dead ends: 4720 [2021-11-20 23:23:44,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=696, Invalid=2964, Unknown=0, NotChecked=0, Total=3660 [2021-11-20 23:23:44,311 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1018 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:44,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 39 Invalid, 4102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-20 23:23:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2021-11-20 23:23:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 2815. [2021-11-20 23:23:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2805 states have (on average 2.305169340463458) internal successors, (6466), 2814 states have internal predecessors, (6466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:23:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 6466 transitions. [2021-11-20 23:23:44,363 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 6466 transitions. Word has length 20 [2021-11-20 23:23:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:44,363 INFO L470 AbstractCegarLoop]: Abstraction has 2815 states and 6466 transitions. [2021-11-20 23:23:44,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:23:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 6466 transitions. [2021-11-20 23:23:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:23:44,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:23:44,365 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] [2021-11-20 23:23:44,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-20 23:23:44,365 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)] === [2021-11-20 23:23:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:23:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1670706936, now seen corresponding path program 12 times [2021-11-20 23:23:44,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:23:44,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587308732] [2021-11-20 23:23:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:23:44,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:23:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:23:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:23:45,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:23:45,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587308732] [2021-11-20 23:23:45,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587308732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:23:45,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:23:45,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:23:45,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638270267] [2021-11-20 23:23:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:23:45,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:23:45,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:23:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:23:45,063 INFO L87 Difference]: Start difference. First operand 2815 states and 6466 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) [2021-11-20 23:23:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:50,452 INFO L93 Difference]: Finished difference Result 4972 states and 11324 transitions. [2021-11-20 23:23:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:23:50,452 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 [2021-11-20 23:23:50,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:50,462 INFO L225 Difference]: With dead ends: 4972 [2021-11-20 23:23:50,462 INFO L226 Difference]: Without dead ends: 4972 [2021-11-20 23:23:50,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:23:50,463 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 857 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 3652 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:50,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 39 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3652 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 23:23:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4972 states. [2021-11-20 23:23:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4972 to 2727. [2021-11-20 23:23:50,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2717 states have (on average 2.3010673536989326) internal successors, (6252), 2726 states have internal predecessors, (6252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:23:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 6252 transitions. [2021-11-20 23:23:50,529 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 6252 transitions. Word has length 20 [2021-11-20 23:23:50,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:50,529 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 6252 transitions. [2021-11-20 23:23:50,529 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) [2021-11-20 23:23:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 6252 transitions. [2021-11-20 23:23:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:23:50,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:23:50,531 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] [2021-11-20 23:23:50,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-20 23:23:50,532 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:23:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:23:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash 447566388, now seen corresponding path program 13 times [2021-11-20 23:23:50,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:23:50,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685116368] [2021-11-20 23:23:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:23:50,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:23:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:23:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:23:52,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:23:52,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685116368] [2021-11-20 23:23:52,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685116368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:23:52,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:23:52,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:23:52,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880319709] [2021-11-20 23:23:52,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:23:52,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:23:52,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:52,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:23:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:23:52,242 INFO L87 Difference]: Start difference. First operand 2727 states and 6252 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:24:01,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:24:01,616 INFO L93 Difference]: Finished difference Result 4316 states and 9822 transitions. [2021-11-20 23:24:01,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-20 23:24:01,617 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:24:01,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:24:01,625 INFO L225 Difference]: With dead ends: 4316 [2021-11-20 23:24:01,625 INFO L226 Difference]: Without dead ends: 4316 [2021-11-20 23:24:01,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=583, Invalid=2497, Unknown=0, NotChecked=0, Total=3080 [2021-11-20 23:24:01,626 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 850 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 4404 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:24:01,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 47 Invalid, 4475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4404 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-20 23:24:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-11-20 23:24:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 2873. [2021-11-20 23:24:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2863 states have (on average 2.3084177436255677) internal successors, (6609), 2872 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:24:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 6609 transitions. [2021-11-20 23:24:01,693 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 6609 transitions. Word has length 20 [2021-11-20 23:24:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:24:01,693 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 6609 transitions. [2021-11-20 23:24:01,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:24:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 6609 transitions. [2021-11-20 23:24:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:24:01,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:24:01,696 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] [2021-11-20 23:24:01,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-20 23:24:01,696 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:24:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:24:01,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1840920808, now seen corresponding path program 14 times [2021-11-20 23:24:01,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:24:01,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846323732] [2021-11-20 23:24:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:24:01,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:24:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:24:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:24:03,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:24:03,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846323732] [2021-11-20 23:24:03,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846323732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:24:03,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:24:03,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:24:03,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966837587] [2021-11-20 23:24:03,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:24:03,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:24:03,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:24:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:24:03,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:24:03,408 INFO L87 Difference]: Start difference. First operand 2873 states and 6609 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:24:12,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:24:12,353 INFO L93 Difference]: Finished difference Result 5025 states and 11457 transitions. [2021-11-20 23:24:12,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 23:24:12,353 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:24:12,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:24:12,360 INFO L225 Difference]: With dead ends: 5025 [2021-11-20 23:24:12,360 INFO L226 Difference]: Without dead ends: 5025 [2021-11-20 23:24:12,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=600, Invalid=2592, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 23:24:12,361 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 922 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 4464 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 4464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:24:12,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 43 Invalid, 4532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 4464 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 23:24:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2021-11-20 23:24:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 2866. [2021-11-20 23:24:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2856 states have (on average 2.3063725490196076) internal successors, (6587), 2865 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:24:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 6587 transitions. [2021-11-20 23:24:12,427 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 6587 transitions. Word has length 20 [2021-11-20 23:24:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:24:12,427 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 6587 transitions. [2021-11-20 23:24:12,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:24:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 6587 transitions. [2021-11-20 23:24:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:24:12,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:24:12,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:24:12,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-20 23:24:12,429 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)] === [2021-11-20 23:24:12,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:24:12,430 INFO L85 PathProgramCache]: Analyzing trace with hash 765935096, now seen corresponding path program 15 times [2021-11-20 23:24:12,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:24:12,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255517747] [2021-11-20 23:24:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:24:12,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:24:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:24:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:24:13,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:24:13,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255517747] [2021-11-20 23:24:13,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255517747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:24:13,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:24:13,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:24:13,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008326449] [2021-11-20 23:24:13,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:24:13,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:24:13,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:24:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:24:13,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:24:13,944 INFO L87 Difference]: Start difference. First operand 2866 states and 6587 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:24:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:24:23,966 INFO L93 Difference]: Finished difference Result 4829 states and 11016 transitions. [2021-11-20 23:24:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 23:24:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:24:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:24:23,973 INFO L225 Difference]: With dead ends: 4829 [2021-11-20 23:24:23,973 INFO L226 Difference]: Without dead ends: 4829 [2021-11-20 23:24:23,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=585, Invalid=2607, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 23:24:23,974 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 859 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 5254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:24:23,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 49 Invalid, 5254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 5189 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-20 23:24:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2021-11-20 23:24:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 2845. [2021-11-20 23:24:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2835 states have (on average 2.305114638447972) internal successors, (6535), 2844 states have internal predecessors, (6535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:24:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 6535 transitions. [2021-11-20 23:24:24,030 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 6535 transitions. Word has length 20 [2021-11-20 23:24:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:24:24,030 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 6535 transitions. [2021-11-20 23:24:24,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:24:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 6535 transitions. [2021-11-20 23:24:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:24:24,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:24:24,032 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] [2021-11-20 23:24:24,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-20 23:24:24,032 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)] === [2021-11-20 23:24:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:24:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1222411114, now seen corresponding path program 16 times [2021-11-20 23:24:24,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:24:24,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733942818] [2021-11-20 23:24:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:24:24,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:24:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:24:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:24:25,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:24:25,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733942818] [2021-11-20 23:24:25,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733942818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:24:25,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:24:25,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-20 23:24:25,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556707766] [2021-11-20 23:24:25,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:24:25,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:24:25,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:24:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:24:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:24:25,477 INFO L87 Difference]: Start difference. First operand 2845 states and 6535 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:24:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:24:34,744 INFO L93 Difference]: Finished difference Result 4759 states and 10849 transitions. [2021-11-20 23:24:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-20 23:24:34,745 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 [2021-11-20 23:24:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:24:34,751 INFO L225 Difference]: With dead ends: 4759 [2021-11-20 23:24:34,751 INFO L226 Difference]: Without dead ends: 4759 [2021-11-20 23:24:34,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=638, Invalid=2668, Unknown=0, NotChecked=0, Total=3306 [2021-11-20 23:24:34,752 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 969 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 4660 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 4660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:24:34,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 41 Invalid, 4724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 4660 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 23:24:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2021-11-20 23:24:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 2825. [2021-11-20 23:24:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2815 states have (on average 2.306216696269982) internal successors, (6492), 2824 states have internal predecessors, (6492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:24:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 6492 transitions. [2021-11-20 23:24:34,799 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 6492 transitions. Word has length 20 [2021-11-20 23:24:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:24:34,799 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 6492 transitions. [2021-11-20 23:24:34,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-11-20 23:24:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 6492 transitions. [2021-11-20 23:24:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:24:34,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:24:34,801 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] [2021-11-20 23:24:34,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-20 23:24:34,801 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)] === [2021-11-20 23:24:34,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:24:34,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1331353436, now seen corresponding path program 17 times [2021-11-20 23:24:34,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:24:34,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124475805] [2021-11-20 23:24:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:24:34,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:24:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:24:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:24:35,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:24:35,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124475805] [2021-11-20 23:24:35,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124475805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:24:35,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:24:35,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:24:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651471234] [2021-11-20 23:24:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:24:35,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:24:35,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:24:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:24:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:24:35,543 INFO L87 Difference]: Start difference. First operand 2825 states and 6492 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) [2021-11-20 23:24:41,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:24:41,721 INFO L93 Difference]: Finished difference Result 4867 states and 11097 transitions. [2021-11-20 23:24:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:24:41,722 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 [2021-11-20 23:24:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:24:41,730 INFO L225 Difference]: With dead ends: 4867 [2021-11-20 23:24:41,730 INFO L226 Difference]: Without dead ends: 4867 [2021-11-20 23:24:41,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:24:41,730 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 704 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:24:41,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 43 Invalid, 4330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 23:24:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2021-11-20 23:24:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 2647. [2021-11-20 23:24:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2637 states have (on average 2.2984452028820628) internal successors, (6061), 2646 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:24:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 6061 transitions. [2021-11-20 23:24:41,783 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 6061 transitions. Word has length 20 [2021-11-20 23:24:41,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:24:41,783 INFO L470 AbstractCegarLoop]: Abstraction has 2647 states and 6061 transitions. [2021-11-20 23:24:41,783 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) [2021-11-20 23:24:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 6061 transitions. [2021-11-20 23:24:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:24:41,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:24:41,785 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] [2021-11-20 23:24:41,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-20 23:24:41,785 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:24:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:24:41,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1432479831, now seen corresponding path program 1 times [2021-11-20 23:24:41,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:24:41,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346156655] [2021-11-20 23:24:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:24:41,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:24:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:24:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:24:42,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:24:42,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346156655] [2021-11-20 23:24:42,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346156655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:24:42,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:24:42,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:24:42,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824311280] [2021-11-20 23:24:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:24:42,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:24:42,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:24:42,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:24:42,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:24:42,392 INFO L87 Difference]: Start difference. First operand 2647 states and 6061 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) [2021-11-20 23:24:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:24:44,743 INFO L93 Difference]: Finished difference Result 3204 states and 7228 transitions. [2021-11-20 23:24:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:24:44,743 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 [2021-11-20 23:24:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:24:44,748 INFO L225 Difference]: With dead ends: 3204 [2021-11-20 23:24:44,749 INFO L226 Difference]: Without dead ends: 3151 [2021-11-20 23:24:44,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:24:44,749 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 323 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:24:44,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 33 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:24:44,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-11-20 23:24:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2682. [2021-11-20 23:24:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2672 states have (on average 2.2964071856287425) internal successors, (6136), 2681 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:24:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 6136 transitions. [2021-11-20 23:24:44,791 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 6136 transitions. Word has length 21 [2021-11-20 23:24:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:24:44,791 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 6136 transitions. [2021-11-20 23:24:44,791 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) [2021-11-20 23:24:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 6136 transitions. [2021-11-20 23:24:44,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:24:44,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:24:44,794 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:24:44,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-20 23:24:44,794 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)] === [2021-11-20 23:24:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:24:44,795 INFO L85 PathProgramCache]: Analyzing trace with hash 221894875, now seen corresponding path program 4 times [2021-11-20 23:24:44,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:24:44,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096190290] [2021-11-20 23:24:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:24:44,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:24:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:24:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:24:45,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:24:45,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096190290] [2021-11-20 23:24:45,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096190290] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:24:45,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934479888] [2021-11-20 23:24:45,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 23:24:45,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:24:45,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:24:45,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:24:45,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:24:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:24:45,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-20 23:24:45,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:24:45,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:45,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:45,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:45,432 INFO L354 Elim1Store]: treesize reduction 168, result has 18.4 percent of original size [2021-11-20 23:24:45,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 220 treesize of output 160 [2021-11-20 23:24:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:45,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:45,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:45,518 INFO L354 Elim1Store]: treesize reduction 220, result has 18.5 percent of original size [2021-11-20 23:24:45,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 225 treesize of output 145 [2021-11-20 23:24:45,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 145 [2021-11-20 23:24:46,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 19 [2021-11-20 23:24:46,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:24:46,485 INFO L354 Elim1Store]: treesize reduction 190, result has 21.8 percent of original size [2021-11-20 23:24:46,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 94 [2021-11-20 23:24:46,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:24:46,679 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:24:46,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 125 treesize of output 72 [2021-11-20 23:24:46,994 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:24:46,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 26 [2021-11-20 23:24:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:24:47,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:25:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:25:11,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934479888] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:25:11,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175961826] [2021-11-20 23:25:11,972 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:25:11,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:25:11,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 29 [2021-11-20 23:25:11,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727814744] [2021-11-20 23:25:11,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:25:11,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 23:25:11,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:25:11,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 23:25:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=780, Unknown=9, NotChecked=0, Total=930 [2021-11-20 23:25:11,975 INFO L87 Difference]: Start difference. First operand 2682 states and 6136 transitions. Second operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:25:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:25:17,531 INFO L93 Difference]: Finished difference Result 3737 states and 8504 transitions. [2021-11-20 23:25:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:25:17,543 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2021-11-20 23:25:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:25:17,551 INFO L225 Difference]: With dead ends: 3737 [2021-11-20 23:25:17,551 INFO L226 Difference]: Without dead ends: 3737 [2021-11-20 23:25:17,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=716, Invalid=2697, Unknown=9, NotChecked=0, Total=3422 [2021-11-20 23:25:17,552 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1426 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 4914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2139 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:25:17,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 45 Invalid, 4914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2701 Invalid, 0 Unknown, 2139 Unchecked, 2.7s Time] [2021-11-20 23:25:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-20 23:25:17,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 2676. [2021-11-20 23:25:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2666 states have (on average 2.2959489872468115) internal successors, (6121), 2675 states have internal predecessors, (6121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:25:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 6121 transitions. [2021-11-20 23:25:17,614 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 6121 transitions. Word has length 21 [2021-11-20 23:25:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:25:17,614 INFO L470 AbstractCegarLoop]: Abstraction has 2676 states and 6121 transitions. [2021-11-20 23:25:17,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:25:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 6121 transitions. [2021-11-20 23:25:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:25:17,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:25:17,617 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] [2021-11-20 23:25:17,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:25:17,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c74b119-09f9-417d-856d-fb31e07375da/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:25:17,830 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:25:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:25:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash 515658899, now seen corresponding path program 2 times [2021-11-20 23:25:17,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:25:17,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462992733] [2021-11-20 23:25:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:25:17,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:25:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:25:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:25:18,398 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:25:18,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462992733] [2021-11-20 23:25:18,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462992733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:25:18,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:25:18,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:25:18,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212528222] [2021-11-20 23:25:18,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:25:18,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:25:18,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:25:18,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:25:18,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:25:18,399 INFO L87 Difference]: Start difference. First operand 2676 states and 6121 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) [2021-11-20 23:25:21,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:25:21,146 INFO L93 Difference]: Finished difference Result 3246 states and 7369 transitions. [2021-11-20 23:25:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:25:21,147 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 [2021-11-20 23:25:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:25:21,151 INFO L225 Difference]: With dead ends: 3246 [2021-11-20 23:25:21,152 INFO L226 Difference]: Without dead ends: 3246 [2021-11-20 23:25:21,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:25:21,152 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 237 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:25:21,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 34 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:25:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-11-20 23:25:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2699. [2021-11-20 23:25:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2689 states have (on average 2.2978802528821123) internal successors, (6179), 2698 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:25:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 6179 transitions. [2021-11-20 23:25:21,207 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 6179 transitions. Word has length 21 [2021-11-20 23:25:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:25:21,207 INFO L470 AbstractCegarLoop]: Abstraction has 2699 states and 6179 transitions. [2021-11-20 23:25:21,207 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) [2021-11-20 23:25:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 6179 transitions. [2021-11-20 23:25:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:25:21,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:25:21,208 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] [2021-11-20 23:25:21,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-20 23:25:21,209 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:25:21,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:25:21,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1021688102, now seen corresponding path program 1 times [2021-11-20 23:25:21,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:25:21,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194897527] [2021-11-20 23:25:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:25:21,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:25:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:25:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:25:21,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:25:21,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194897527] [2021-11-20 23:25:21,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194897527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:25:21,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:25:21,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:25:21,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200321666] [2021-11-20 23:25:21,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:25:21,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:25:21,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:25:21,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:25:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:25:21,453 INFO L87 Difference]: Start difference. First operand 2699 states and 6179 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) [2021-11-20 23:25:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:25:23,506 INFO L93 Difference]: Finished difference Result 3253 states and 7297 transitions. [2021-11-20 23:25:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:25:23,507 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 [2021-11-20 23:25:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:25:23,511 INFO L225 Difference]: With dead ends: 3253 [2021-11-20 23:25:23,511 INFO L226 Difference]: Without dead ends: 3189 [2021-11-20 23:25:23,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-20 23:25:23,511 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 336 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:25:23,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 46 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:25:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-11-20 23:25:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2714. [2021-11-20 23:25:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2704 states have (on average 2.2951183431952664) internal successors, (6206), 2713 states have internal predecessors, (6206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:25:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 6206 transitions. [2021-11-20 23:25:23,549 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 6206 transitions. Word has length 21 [2021-11-20 23:25:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:25:23,549 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 6206 transitions. [2021-11-20 23:25:23,549 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) [2021-11-20 23:25:23,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 6206 transitions. [2021-11-20 23:25:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:25:23,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:25:23,558 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] [2021-11-20 23:25:23,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-20 23:25:23,559 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:25:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:25:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1550840195, now seen corresponding path program 3 times [2021-11-20 23:25:23,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:25:23,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250260322] [2021-11-20 23:25:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:25:23,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:25:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:25:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:25:23,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:25:23,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250260322] [2021-11-20 23:25:23,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250260322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:25:23,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:25:23,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:25:23,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829380191] [2021-11-20 23:25:23,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:25:23,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:25:23,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:25:23,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:25:23,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:25:23,950 INFO L87 Difference]: Start difference. First operand 2714 states and 6206 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) [2021-11-20 23:25:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:25:25,844 INFO L93 Difference]: Finished difference Result 3367 states and 7640 transitions. [2021-11-20 23:25:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:25:25,844 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 [2021-11-20 23:25:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:25:25,848 INFO L225 Difference]: With dead ends: 3367 [2021-11-20 23:25:25,849 INFO L226 Difference]: Without dead ends: 3367 [2021-11-20 23:25:25,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:25:25,849 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 329 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:25:25,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 22 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:25:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2021-11-20 23:25:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 2735. [2021-11-20 23:25:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2725 states have (on average 2.29651376146789) internal successors, (6258), 2734 states have internal predecessors, (6258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:25:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 6258 transitions. [2021-11-20 23:25:25,883 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 6258 transitions. Word has length 21 [2021-11-20 23:25:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:25:25,883 INFO L470 AbstractCegarLoop]: Abstraction has 2735 states and 6258 transitions. [2021-11-20 23:25:25,883 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) [2021-11-20 23:25:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 6258 transitions. [2021-11-20 23:25:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:25:25,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:25:25,885 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] [2021-11-20 23:25:25,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-20 23:25:25,885 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:25:25,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:25:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash 41649829, now seen corresponding path program 4 times [2021-11-20 23:25:25,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:25:25,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177360985] [2021-11-20 23:25:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:25:25,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:25:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:25:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:25:26,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:25:26,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177360985] [2021-11-20 23:25:26,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177360985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:25:26,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:25:26,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:25:26,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548518953] [2021-11-20 23:25:26,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:25:26,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:25:26,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:25:26,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:25:26,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:25:26,204 INFO L87 Difference]: Start difference. First operand 2735 states and 6258 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)