./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/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_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/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_557ca918-7feb-4eb9-b11e-2aea13db5919/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 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:56,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:56,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:56,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:56,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:56,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:56,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:56,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:56,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:56,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:56,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:56,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:56,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:56,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:56,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:56,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:56,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:56,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:56,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:56,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:56,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:56,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:56,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:56,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:56,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:56,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:56,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:56,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:56,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:56,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:56,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:56,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:56,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:56,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:56,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:56,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:56,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:56,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:56,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:56,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:56,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:56,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:35:56,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:56,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:56,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:56,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:56,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:56,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:56,247 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:56,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:56,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:56,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:56,249 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:56,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:56,249 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:56,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:56,250 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:56,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:56,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:56,251 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:56,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:56,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:35:56,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:56,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:35:56,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:56,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:35:56,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:56,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:35:56,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:35:56,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:35:56,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:56,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:35:56,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:56,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:56,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:56,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:56,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:56,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:35:56,259 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:56,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:56,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:35:56,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:56,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:56,260 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_557ca918-7feb-4eb9-b11e-2aea13db5919/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e [2021-11-20 23:35:56,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:56,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:56,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:56,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:56,596 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:56,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2021-11-20 23:35:56,652 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/data/16cd3b301/83b20e44bf1145208723801dd322950f/FLAG72efe0584 [2021-11-20 23:35:57,288 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:57,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2021-11-20 23:35:57,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/data/16cd3b301/83b20e44bf1145208723801dd322950f/FLAG72efe0584 [2021-11-20 23:35:57,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/data/16cd3b301/83b20e44bf1145208723801dd322950f [2021-11-20 23:35:57,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:57,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:57,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:57,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:57,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:57,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:57" (1/1) ... [2021-11-20 23:35:57,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a68a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:57, skipping insertion in model container [2021-11-20 23:35:57,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:57" (1/1) ... [2021-11-20 23:35:57,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:57,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:57,835 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 23:35:58,196 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47275,47288] [2021-11-20 23:35:58,201 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47463,47476] [2021-11-20 23:35:58,215 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48230,48243] [2021-11-20 23:35:58,218 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48344,48357] [2021-11-20 23:35:58,229 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48816,48829] [2021-11-20 23:35:58,234 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48872,48885] [2021-11-20 23:35:58,242 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49384,49397] [2021-11-20 23:35:58,247 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49443,49456] [2021-11-20 23:35:58,249 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49522,49535] [2021-11-20 23:35:58,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:58,263 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:58,273 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-20 23:35:58,324 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47275,47288] [2021-11-20 23:35:58,326 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[47463,47476] [2021-11-20 23:35:58,332 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48230,48243] [2021-11-20 23:35:58,333 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48344,48357] [2021-11-20 23:35:58,341 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48816,48829] [2021-11-20 23:35:58,345 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[48872,48885] [2021-11-20 23:35:58,349 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49384,49397] [2021-11-20 23:35:58,350 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49443,49456] [2021-11-20 23:35:58,351 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_557ca918-7feb-4eb9-b11e-2aea13db5919/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i[49522,49535] [2021-11-20 23:35:58,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:58,418 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:58,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58 WrapperNode [2021-11-20 23:35:58,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:58,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:58,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:58,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:58,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,503 INFO L137 Inliner]: procedures = 278, calls = 103, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 416 [2021-11-20 23:35:58,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:58,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:58,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:58,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:58,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:58,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:58,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:58,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:58,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (1/1) ... [2021-11-20 23:35:58,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:58,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:58,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:58,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_557ca918-7feb-4eb9-b11e-2aea13db5919/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2021-11-20 23:35:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2021-11-20 23:35:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:35:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:35:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:35:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:35:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:35:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:35:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:35:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:35:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:58,670 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 23:35:58,829 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:58,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:59,611 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:35:59,634 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:35:59,635 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 23:35:59,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:59 BoogieIcfgContainer [2021-11-20 23:35:59,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:35:59,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:35:59,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:35:59,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:35:59,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:57" (1/3) ... [2021-11-20 23:35:59,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4292f608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:59, skipping insertion in model container [2021-11-20 23:35:59,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:58" (2/3) ... [2021-11-20 23:35:59,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4292f608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:59, skipping insertion in model container [2021-11-20 23:35:59,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:59" (3/3) ... [2021-11-20 23:35:59,648 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.i [2021-11-20 23:35:59,660 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 23:35:59,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:35:59,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-20 23:35:59,662 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 23:35:59,731 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,731 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,732 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#in~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,733 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,734 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,734 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,734 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,734 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,734 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,735 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,735 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,735 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,735 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,735 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,736 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,738 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,738 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,738 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,739 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,739 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,739 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,739 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,739 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,739 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,740 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,741 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,741 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,741 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,741 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,741 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,742 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,742 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,742 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,742 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,742 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,743 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,744 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,745 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,747 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,747 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,748 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,749 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,755 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,756 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,757 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,758 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,759 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,760 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,761 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,762 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,763 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,764 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,764 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,764 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,764 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,764 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,764 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,765 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,765 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,765 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,765 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,766 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,766 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,766 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,766 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,766 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,768 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,768 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,768 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,768 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,769 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,769 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,769 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,769 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,769 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,769 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,769 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,770 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,770 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,770 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,770 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,770 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,770 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,770 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,771 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,771 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,771 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,771 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,771 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,771 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,771 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,772 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,773 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,774 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,774 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,774 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,774 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,774 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,774 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,775 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,775 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,775 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,776 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,776 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,776 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,776 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,777 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,780 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,781 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,782 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,783 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,783 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,783 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,784 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,785 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,786 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,786 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,786 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,786 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,786 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,786 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,786 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,787 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,788 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,788 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,788 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,788 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,788 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,788 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,788 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,789 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,789 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,796 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,797 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,798 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,798 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,798 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,798 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,798 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,798 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,799 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,799 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,799 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,799 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,799 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,799 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,799 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,801 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,801 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,801 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,801 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,801 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,802 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,803 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,804 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,805 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,806 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,807 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,808 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,808 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,808 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,809 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,810 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,811 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,812 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,813 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,814 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,815 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,816 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,816 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,816 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,816 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,816 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,816 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,816 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,817 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,818 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,819 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,820 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,823 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,823 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,823 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#t~pre63#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,824 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem22#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,825 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~t~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem27#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,826 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_~self#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem20#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem25#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,827 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,828 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem30#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,828 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,828 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~ret24#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,828 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem21#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,828 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,828 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,829 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~pre28#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,829 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem26#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,829 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,829 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q_#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,829 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~malloc23#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,829 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_node_init_#in~self#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,829 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_fifo_push_#t~mem29#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,830 WARN L322 ript$VariableManager]: TermVariabe |pusherThread1of1ForFork0_~q~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 23:35:59,835 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-20 23:35:59,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:35:59,897 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 23:35:59,898 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-20 23:35:59,930 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-20 23:35:59,946 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 478 places, 507 transitions, 1022 flow [2021-11-20 23:35:59,949 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 478 places, 507 transitions, 1022 flow [2021-11-20 23:35:59,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 507 transitions, 1022 flow [2021-11-20 23:36:00,151 INFO L129 PetriNetUnfolder]: 33/506 cut-off events. [2021-11-20 23:36:00,151 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-20 23:36:00,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 506 events. 33/506 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1168 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 352. Up to 3 conditions per place. [2021-11-20 23:36:00,189 INFO L116 LiptonReduction]: Number of co-enabled transitions 36864 [2021-11-20 23:36:35,851 WARN L227 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 23:36:44,530 WARN L227 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 241 DAG size of output: 226 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 23:36:47,716 INFO L131 LiptonReduction]: Checked pairs total: 142414 [2021-11-20 23:36:47,716 INFO L133 LiptonReduction]: Total number of compositions: 546 [2021-11-20 23:36:47,724 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 106 places, 123 transitions, 254 flow [2021-11-20 23:36:47,793 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-11-20 23:36:47,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:47,804 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-11-20 23:36:47,805 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 23:36:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:47,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1791, now seen corresponding path program 1 times [2021-11-20 23:36:47,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:47,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337591681] [2021-11-20 23:36:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:47,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:47,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:47,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337591681] [2021-11-20 23:36:47,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337591681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:47,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:47,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-11-20 23:36:47,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563081203] [2021-11-20 23:36:47,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:47,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:36:47,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:36:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:36:47,982 INFO L87 Difference]: Start difference. First operand has 1451 states, 1440 states have (on average 2.327777777777778) internal successors, (3352), 1450 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:48,294 INFO L93 Difference]: Finished difference Result 1450 states and 3256 transitions. [2021-11-20 23:36:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:36:48,296 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 23:36:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:48,329 INFO L225 Difference]: With dead ends: 1450 [2021-11-20 23:36:48,329 INFO L226 Difference]: Without dead ends: 1450 [2021-11-20 23:36:48,330 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 23:36:48,339 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:48,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:36:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-20 23:36:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2021-11-20 23:36:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1440 states have (on average 2.261111111111111) internal successors, (3256), 1449 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 3256 transitions. [2021-11-20 23:36:48,550 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 3256 transitions. Word has length 1 [2021-11-20 23:36:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:48,551 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 3256 transitions. [2021-11-20 23:36:48,551 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 23:36:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 3256 transitions. [2021-11-20 23:36:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 23:36:48,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:48,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 23:36:48,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:36:48,553 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 23:36:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash 946258214, now seen corresponding path program 1 times [2021-11-20 23:36:48,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:48,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362136824] [2021-11-20 23:36:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:48,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:48,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:48,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362136824] [2021-11-20 23:36:48,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362136824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:48,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:48,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:48,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821648313] [2021-11-20 23:36:48,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:48,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:48,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:48,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:48,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:48,714 INFO L87 Difference]: Start difference. First operand 1450 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:49,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:49,064 INFO L93 Difference]: Finished difference Result 2723 states and 6126 transitions. [2021-11-20 23:36:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:49,065 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 23:36:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:49,085 INFO L225 Difference]: With dead ends: 2723 [2021-11-20 23:36:49,086 INFO L226 Difference]: Without dead ends: 2723 [2021-11-20 23:36:49,086 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 23:36:49,087 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 97 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:49,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 48 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:36:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-11-20 23:36:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1469. [2021-11-20 23:36:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1459 states have (on average 2.259081562714188) internal successors, (3296), 1468 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 3296 transitions. [2021-11-20 23:36:49,153 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 3296 transitions. Word has length 6 [2021-11-20 23:36:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:49,153 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 3296 transitions. [2021-11-20 23:36:49,154 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 23:36:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 3296 transitions. [2021-11-20 23:36:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:36:49,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:49,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:49,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:36:49,155 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 23:36:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash -729302322, now seen corresponding path program 1 times [2021-11-20 23:36:49,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:49,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623088517] [2021-11-20 23:36:49,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:49,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:49,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:49,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623088517] [2021-11-20 23:36:49,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623088517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:49,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:49,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:49,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306331687] [2021-11-20 23:36:49,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:49,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:49,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:49,234 INFO L87 Difference]: Start difference. First operand 1469 states and 3296 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:49,467 INFO L93 Difference]: Finished difference Result 1469 states and 3277 transitions. [2021-11-20 23:36:49,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:49,468 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 23:36:49,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:49,479 INFO L225 Difference]: With dead ends: 1469 [2021-11-20 23:36:49,479 INFO L226 Difference]: Without dead ends: 1469 [2021-11-20 23:36:49,480 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 23:36:49,481 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 110 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:49,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 27 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:36:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-20 23:36:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2021-11-20 23:36:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1459 states have (on average 2.246058944482522) internal successors, (3277), 1468 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 3277 transitions. [2021-11-20 23:36:49,532 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 3277 transitions. Word has length 7 [2021-11-20 23:36:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:49,532 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 3277 transitions. [2021-11-20 23:36:49,533 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 23:36:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 3277 transitions. [2021-11-20 23:36:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:36:49,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:49,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:49,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:36:49,535 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 23:36:49,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1122511823, now seen corresponding path program 1 times [2021-11-20 23:36:49,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:49,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127296234] [2021-11-20 23:36:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:49,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:49,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:49,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127296234] [2021-11-20 23:36:49,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127296234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:49,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:49,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:49,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343995565] [2021-11-20 23:36:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:49,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:36:49,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:49,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:36:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:36:49,664 INFO L87 Difference]: Start difference. First operand 1469 states and 3277 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:50,537 INFO L93 Difference]: Finished difference Result 1855 states and 4138 transitions. [2021-11-20 23:36:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:36:50,538 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 23:36:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:50,555 INFO L225 Difference]: With dead ends: 1855 [2021-11-20 23:36:50,556 INFO L226 Difference]: Without dead ends: 1855 [2021-11-20 23:36:50,556 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 23:36:50,558 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:50,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 25 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:36:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-20 23:36:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1576. [2021-11-20 23:36:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1566 states have (on average 2.2490421455938696) internal successors, (3522), 1575 states have internal predecessors, (3522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 3522 transitions. [2021-11-20 23:36:50,637 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 3522 transitions. Word has length 8 [2021-11-20 23:36:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:50,638 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 3522 transitions. [2021-11-20 23:36:50,638 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 23:36:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 3522 transitions. [2021-11-20 23:36:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 23:36:50,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:50,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:50,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:36:50,641 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 23:36:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:50,642 INFO L85 PathProgramCache]: Analyzing trace with hash -696730677, now seen corresponding path program 1 times [2021-11-20 23:36:50,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:50,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963669124] [2021-11-20 23:36:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:50,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:50,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:50,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963669124] [2021-11-20 23:36:50,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963669124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:50,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:50,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:36:50,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786025124] [2021-11-20 23:36:50,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:50,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:50,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:50,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:50,739 INFO L87 Difference]: Start difference. First operand 1576 states and 3522 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:51,113 INFO L93 Difference]: Finished difference Result 2584 states and 5768 transitions. [2021-11-20 23:36:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:51,114 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 23:36:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:51,137 INFO L225 Difference]: With dead ends: 2584 [2021-11-20 23:36:51,137 INFO L226 Difference]: Without dead ends: 2584 [2021-11-20 23:36:51,137 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 23:36:51,141 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 73 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:51,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 48 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:36:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2021-11-20 23:36:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1633. [2021-11-20 23:36:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1623 states have (on average 2.243992606284658) internal successors, (3642), 1632 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 3642 transitions. [2021-11-20 23:36:51,231 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 3642 transitions. Word has length 10 [2021-11-20 23:36:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:51,231 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 3642 transitions. [2021-11-20 23:36:51,232 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 23:36:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 3642 transitions. [2021-11-20 23:36:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:36:51,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:51,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:51,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:36:51,243 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 23:36:51,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:51,244 INFO L85 PathProgramCache]: Analyzing trace with hash 344091785, now seen corresponding path program 1 times [2021-11-20 23:36:51,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:51,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058990373] [2021-11-20 23:36:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:51,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:51,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:51,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058990373] [2021-11-20 23:36:51,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058990373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:51,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:51,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:36:51,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795596727] [2021-11-20 23:36:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:51,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:36:51,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:36:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:51,561 INFO L87 Difference]: Start difference. First operand 1633 states and 3642 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:53,399 INFO L93 Difference]: Finished difference Result 2374 states and 5281 transitions. [2021-11-20 23:36:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:36:53,399 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 23:36:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:53,416 INFO L225 Difference]: With dead ends: 2374 [2021-11-20 23:36:53,416 INFO L226 Difference]: Without dead ends: 2374 [2021-11-20 23:36:53,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:36:53,417 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 387 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:53,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 24 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:36:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-11-20 23:36:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1647. [2021-11-20 23:36:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1637 states have (on average 2.244349419670128) internal successors, (3674), 1646 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:53,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 3674 transitions. [2021-11-20 23:36:53,477 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 3674 transitions. Word has length 14 [2021-11-20 23:36:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:53,478 INFO L470 AbstractCegarLoop]: Abstraction has 1647 states and 3674 transitions. [2021-11-20 23:36:53,478 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 23:36:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 3674 transitions. [2021-11-20 23:36:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:36:53,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:53,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:53,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:36:53,480 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:36:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2033711913, now seen corresponding path program 1 times [2021-11-20 23:36:53,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:53,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080829741] [2021-11-20 23:36:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:53,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:53,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080829741] [2021-11-20 23:36:53,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080829741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:53,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:53,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:36:53,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450095564] [2021-11-20 23:36:53,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:53,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:36:53,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:53,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:36:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:36:53,605 INFO L87 Difference]: Start difference. First operand 1647 states and 3674 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:54,588 INFO L93 Difference]: Finished difference Result 2628 states and 5857 transitions. [2021-11-20 23:36:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:36:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 23:36:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:54,604 INFO L225 Difference]: With dead ends: 2628 [2021-11-20 23:36:54,604 INFO L226 Difference]: Without dead ends: 2591 [2021-11-20 23:36:54,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:54,605 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 120 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:54,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 27 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:36:54,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-11-20 23:36:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1932. [2021-11-20 23:36:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1922 states have (on average 2.27471383975026) internal successors, (4372), 1931 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 4372 transitions. [2021-11-20 23:36:54,701 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 4372 transitions. Word has length 14 [2021-11-20 23:36:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:54,701 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 4372 transitions. [2021-11-20 23:36:54,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 4372 transitions. [2021-11-20 23:36:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:36:54,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:54,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:54,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:36:54,703 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:36:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1608731715, now seen corresponding path program 2 times [2021-11-20 23:36:54,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:54,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082216790] [2021-11-20 23:36:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:54,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:54,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:54,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082216790] [2021-11-20 23:36:54,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082216790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:54,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:54,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:36:54,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845759415] [2021-11-20 23:36:54,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:54,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:36:54,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:36:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:36:54,920 INFO L87 Difference]: Start difference. First operand 1932 states and 4372 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:56,970 INFO L93 Difference]: Finished difference Result 2390 states and 5367 transitions. [2021-11-20 23:36:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 23:36:56,970 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 23:36:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:56,986 INFO L225 Difference]: With dead ends: 2390 [2021-11-20 23:36:56,987 INFO L226 Difference]: Without dead ends: 2390 [2021-11-20 23:36:56,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=590, Unknown=0, NotChecked=0, Total=870 [2021-11-20 23:36:56,988 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 470 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:56,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 22 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:36:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-20 23:36:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1920. [2021-11-20 23:36:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1910 states have (on average 2.2743455497382197) internal successors, (4344), 1919 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 4344 transitions. [2021-11-20 23:36:57,057 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 4344 transitions. Word has length 14 [2021-11-20 23:36:57,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:57,057 INFO L470 AbstractCegarLoop]: Abstraction has 1920 states and 4344 transitions. [2021-11-20 23:36:57,057 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 23:36:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 4344 transitions. [2021-11-20 23:36:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:36:57,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:57,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:57,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:36:57,060 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 23:36:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2076579246, now seen corresponding path program 1 times [2021-11-20 23:36:57,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:57,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751685761] [2021-11-20 23:36:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:57,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:57,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:57,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751685761] [2021-11-20 23:36:57,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751685761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:57,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:57,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:36:57,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993683703] [2021-11-20 23:36:57,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:57,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:36:57,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:36:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:36:57,271 INFO L87 Difference]: Start difference. First operand 1920 states and 4344 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:59,320 INFO L93 Difference]: Finished difference Result 2891 states and 6497 transitions. [2021-11-20 23:36:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 23:36:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 23:36:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:59,341 INFO L225 Difference]: With dead ends: 2891 [2021-11-20 23:36:59,341 INFO L226 Difference]: Without dead ends: 2891 [2021-11-20 23:36:59,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:36:59,342 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 476 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:59,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 24 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:36:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-11-20 23:36:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1965. [2021-11-20 23:36:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1955 states have (on average 2.2751918158567777) internal successors, (4448), 1964 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 4448 transitions. [2021-11-20 23:36:59,410 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 4448 transitions. Word has length 15 [2021-11-20 23:36:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:59,410 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 4448 transitions. [2021-11-20 23:36:59,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:36:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 4448 transitions. [2021-11-20 23:36:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:36:59,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:59,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:59,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:36:59,412 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 23:36:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1137616898, now seen corresponding path program 1 times [2021-11-20 23:36:59,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:59,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395172491] [2021-11-20 23:36:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:59,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:36:59,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:59,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395172491] [2021-11-20 23:36:59,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395172491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:59,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:59,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:59,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807817505] [2021-11-20 23:36:59,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:59,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:36:59,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:59,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:36:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:59,590 INFO L87 Difference]: Start difference. First operand 1965 states and 4448 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:00,693 INFO L93 Difference]: Finished difference Result 2783 states and 6259 transitions. [2021-11-20 23:37:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:37:00,693 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 23:37:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:00,703 INFO L225 Difference]: With dead ends: 2783 [2021-11-20 23:37:00,703 INFO L226 Difference]: Without dead ends: 2783 [2021-11-20 23:37:00,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:00,704 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 214 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:00,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 12 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:37:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2021-11-20 23:37:00,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2121. [2021-11-20 23:37:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2111 states have (on average 2.2837517764092845) internal successors, (4821), 2120 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 4821 transitions. [2021-11-20 23:37:00,823 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 4821 transitions. Word has length 15 [2021-11-20 23:37:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:00,824 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 4821 transitions. [2021-11-20 23:37:00,825 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 23:37:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 4821 transitions. [2021-11-20 23:37:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:00,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:00,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:00,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:37:00,827 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 23:37:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1658931202, now seen corresponding path program 2 times [2021-11-20 23:37:00,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:00,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816675191] [2021-11-20 23:37:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:00,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:01,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:01,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816675191] [2021-11-20 23:37:01,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816675191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:01,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:01,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:01,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547920291] [2021-11-20 23:37:01,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:01,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:01,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:01,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:01,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:01,283 INFO L87 Difference]: Start difference. First operand 2121 states and 4821 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:03,175 INFO L93 Difference]: Finished difference Result 2704 states and 6031 transitions. [2021-11-20 23:37:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 23:37:03,176 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 23:37:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:03,186 INFO L225 Difference]: With dead ends: 2704 [2021-11-20 23:37:03,186 INFO L226 Difference]: Without dead ends: 2704 [2021-11-20 23:37:03,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2021-11-20 23:37:03,188 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 400 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:03,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 24 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:37:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2021-11-20 23:37:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1929. [2021-11-20 23:37:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1919 states have (on average 2.2652423137050546) internal successors, (4347), 1928 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 4347 transitions. [2021-11-20 23:37:03,264 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 4347 transitions. Word has length 15 [2021-11-20 23:37:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:03,265 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 4347 transitions. [2021-11-20 23:37:03,265 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 23:37:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 4347 transitions. [2021-11-20 23:37:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:03,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:03,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:03,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:37:03,267 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 23:37:03,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2109978108, now seen corresponding path program 3 times [2021-11-20 23:37:03,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:03,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884892118] [2021-11-20 23:37:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:03,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:03,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:03,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884892118] [2021-11-20 23:37:03,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884892118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:03,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:03,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:03,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419255355] [2021-11-20 23:37:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:03,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:03,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:03,613 INFO L87 Difference]: Start difference. First operand 1929 states and 4347 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:07,031 INFO L93 Difference]: Finished difference Result 2686 states and 5999 transitions. [2021-11-20 23:37:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 23:37:07,033 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 23:37:07,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:07,039 INFO L225 Difference]: With dead ends: 2686 [2021-11-20 23:37:07,039 INFO L226 Difference]: Without dead ends: 2686 [2021-11-20 23:37:07,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 23:37:07,041 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 493 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:07,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 35 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:37:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-11-20 23:37:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1973. [2021-11-20 23:37:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1963 states have (on average 2.270504330106979) internal successors, (4457), 1972 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4457 transitions. [2021-11-20 23:37:07,103 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4457 transitions. Word has length 15 [2021-11-20 23:37:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:07,104 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4457 transitions. [2021-11-20 23:37:07,104 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 23:37:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4457 transitions. [2021-11-20 23:37:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:07,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:07,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:07,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:37:07,106 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 23:37:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1589137872, now seen corresponding path program 4 times [2021-11-20 23:37:07,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:07,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323207321] [2021-11-20 23:37:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:07,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:07,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:07,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323207321] [2021-11-20 23:37:07,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323207321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:07,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:07,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:07,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505436769] [2021-11-20 23:37:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:07,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:07,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:07,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:07,445 INFO L87 Difference]: Start difference. First operand 1973 states and 4457 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:10,998 INFO L93 Difference]: Finished difference Result 2664 states and 5973 transitions. [2021-11-20 23:37:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 23:37:10,999 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 23:37:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:11,006 INFO L225 Difference]: With dead ends: 2664 [2021-11-20 23:37:11,007 INFO L226 Difference]: Without dead ends: 2664 [2021-11-20 23:37:11,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:37:11,008 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 428 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:11,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 35 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:37:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-11-20 23:37:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1973. [2021-11-20 23:37:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1963 states have (on average 2.270504330106979) internal successors, (4457), 1972 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4457 transitions. [2021-11-20 23:37:11,074 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4457 transitions. Word has length 15 [2021-11-20 23:37:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:11,074 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4457 transitions. [2021-11-20 23:37:11,075 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 23:37:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4457 transitions. [2021-11-20 23:37:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:11,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:11,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:11,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:37:11,077 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 23:37:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1218008820, now seen corresponding path program 2 times [2021-11-20 23:37:11,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:11,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817212733] [2021-11-20 23:37:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:11,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:11,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:11,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817212733] [2021-11-20 23:37:11,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817212733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:11,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:11,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:37:11,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060939154] [2021-11-20 23:37:11,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:11,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:11,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:11,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:11,272 INFO L87 Difference]: Start difference. First operand 1973 states and 4457 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:13,482 INFO L93 Difference]: Finished difference Result 2480 states and 5547 transitions. [2021-11-20 23:37:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 23:37:13,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 23:37:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:13,491 INFO L225 Difference]: With dead ends: 2480 [2021-11-20 23:37:13,491 INFO L226 Difference]: Without dead ends: 2480 [2021-11-20 23:37:13,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:13,492 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 689 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:13,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 22 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:37:13,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2021-11-20 23:37:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1965. [2021-11-20 23:37:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1955 states have (on average 2.2705882352941176) internal successors, (4439), 1964 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 4439 transitions. [2021-11-20 23:37:13,559 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 4439 transitions. Word has length 15 [2021-11-20 23:37:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:13,559 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 4439 transitions. [2021-11-20 23:37:13,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 4439 transitions. [2021-11-20 23:37:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:13,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:13,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:13,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:37:13,561 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 23:37:13,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1157488478, now seen corresponding path program 3 times [2021-11-20 23:37:13,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:13,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016658313] [2021-11-20 23:37:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:13,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:13,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:13,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016658313] [2021-11-20 23:37:13,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016658313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:13,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:13,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:37:13,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449775486] [2021-11-20 23:37:13,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:13,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:13,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:13,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:13,751 INFO L87 Difference]: Start difference. First operand 1965 states and 4439 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:15,236 INFO L93 Difference]: Finished difference Result 2387 states and 5352 transitions. [2021-11-20 23:37:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 23:37:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 23:37:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:15,251 INFO L225 Difference]: With dead ends: 2387 [2021-11-20 23:37:15,251 INFO L226 Difference]: Without dead ends: 2387 [2021-11-20 23:37:15,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:37:15,256 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 627 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:15,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 22 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:37:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2021-11-20 23:37:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 1967. [2021-11-20 23:37:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1957 states have (on average 2.270311701584057) internal successors, (4443), 1966 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 4443 transitions. [2021-11-20 23:37:15,321 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 4443 transitions. Word has length 15 [2021-11-20 23:37:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:15,321 INFO L470 AbstractCegarLoop]: Abstraction has 1967 states and 4443 transitions. [2021-11-20 23:37:15,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 4443 transitions. [2021-11-20 23:37:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:15,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:15,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:15,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:37:15,324 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 23:37:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2097695960, now seen corresponding path program 4 times [2021-11-20 23:37:15,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:15,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33785498] [2021-11-20 23:37:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:15,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:15,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:15,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33785498] [2021-11-20 23:37:15,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33785498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:15,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:15,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:37:15,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42822025] [2021-11-20 23:37:15,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:15,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:37:15,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:37:15,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:37:15,536 INFO L87 Difference]: Start difference. First operand 1967 states and 4443 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:17,402 INFO L93 Difference]: Finished difference Result 2340 states and 5250 transitions. [2021-11-20 23:37:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 23:37:17,403 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 23:37:17,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:17,409 INFO L225 Difference]: With dead ends: 2340 [2021-11-20 23:37:17,409 INFO L226 Difference]: Without dead ends: 2340 [2021-11-20 23:37:17,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:37:17,411 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 464 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:17,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 22 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:37:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-11-20 23:37:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1953. [2021-11-20 23:37:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1943 states have (on average 2.2702007205352546) internal successors, (4411), 1952 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 4411 transitions. [2021-11-20 23:37:17,463 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 4411 transitions. Word has length 15 [2021-11-20 23:37:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:17,464 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 4411 transitions. [2021-11-20 23:37:17,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 4411 transitions. [2021-11-20 23:37:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:17,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:17,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:17,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:37:17,466 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 23:37:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:17,466 INFO L85 PathProgramCache]: Analyzing trace with hash -608276146, now seen corresponding path program 5 times [2021-11-20 23:37:17,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:17,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474730792] [2021-11-20 23:37:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:17,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:17,776 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 23:37:17,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:17,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474730792] [2021-11-20 23:37:17,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474730792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:17,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:17,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:17,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273717951] [2021-11-20 23:37:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:17,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:17,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:17,779 INFO L87 Difference]: Start difference. First operand 1953 states and 4411 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:21,431 INFO L93 Difference]: Finished difference Result 2499 states and 5589 transitions. [2021-11-20 23:37:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:37:21,432 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 23:37:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:21,439 INFO L225 Difference]: With dead ends: 2499 [2021-11-20 23:37:21,440 INFO L226 Difference]: Without dead ends: 2499 [2021-11-20 23:37:21,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=452, Invalid=1108, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:37:21,441 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 430 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:21,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 35 Invalid, 3078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:37:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-11-20 23:37:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1953. [2021-11-20 23:37:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1943 states have (on average 2.2702007205352546) internal successors, (4411), 1952 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 4411 transitions. [2021-11-20 23:37:21,510 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 4411 transitions. Word has length 15 [2021-11-20 23:37:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:21,513 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 4411 transitions. [2021-11-20 23:37:21,513 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 23:37:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 4411 transitions. [2021-11-20 23:37:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:21,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:21,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:21,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:37:21,515 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 23:37:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1652178058, now seen corresponding path program 6 times [2021-11-20 23:37:21,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:21,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619993408] [2021-11-20 23:37:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:21,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:21,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:21,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619993408] [2021-11-20 23:37:21,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619993408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:21,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:21,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:21,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248759583] [2021-11-20 23:37:21,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:21,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:21,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:21,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:21,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:21,864 INFO L87 Difference]: Start difference. First operand 1953 states and 4411 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:25,450 INFO L93 Difference]: Finished difference Result 2457 states and 5502 transitions. [2021-11-20 23:37:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:37:25,450 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 23:37:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:25,454 INFO L225 Difference]: With dead ends: 2457 [2021-11-20 23:37:25,454 INFO L226 Difference]: Without dead ends: 2457 [2021-11-20 23:37:25,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=471, Invalid=1169, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:37:25,456 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 405 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3104 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:25,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 35 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3104 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:37:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-11-20 23:37:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1957. [2021-11-20 23:37:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-20 23:37:25,501 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-20 23:37:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:25,501 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-20 23:37:25,502 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 23:37:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-20 23:37:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:25,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:25,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:25,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 23:37:25,503 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 23:37:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:25,504 INFO L85 PathProgramCache]: Analyzing trace with hash 293412896, now seen corresponding path program 7 times [2021-11-20 23:37:25,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:25,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230694703] [2021-11-20 23:37:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:25,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:25,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230694703] [2021-11-20 23:37:25,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230694703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:25,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:25,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:25,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087477859] [2021-11-20 23:37:25,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:25,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:25,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:25,794 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:29,550 INFO L93 Difference]: Finished difference Result 2431 states and 5447 transitions. [2021-11-20 23:37:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:37:29,551 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 23:37:29,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:29,554 INFO L225 Difference]: With dead ends: 2431 [2021-11-20 23:37:29,555 INFO L226 Difference]: Without dead ends: 2431 [2021-11-20 23:37:29,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:37:29,556 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 396 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 3400 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:29,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 35 Invalid, 3438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3400 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:37:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2021-11-20 23:37:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1957. [2021-11-20 23:37:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-20 23:37:29,602 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-20 23:37:29,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:29,602 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-20 23:37:29,602 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 23:37:29,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-20 23:37:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:29,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:29,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:29,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 23:37:29,604 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 23:37:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1087560822, now seen corresponding path program 8 times [2021-11-20 23:37:29,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:29,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331114753] [2021-11-20 23:37:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:29,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:29,883 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 23:37:29,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:29,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331114753] [2021-11-20 23:37:29,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331114753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:29,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:29,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:29,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722971953] [2021-11-20 23:37:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:29,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:29,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:29,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:29,885 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:33,903 INFO L93 Difference]: Finished difference Result 2747 states and 6144 transitions. [2021-11-20 23:37:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:37:33,903 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 23:37:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:33,907 INFO L225 Difference]: With dead ends: 2747 [2021-11-20 23:37:33,907 INFO L226 Difference]: Without dead ends: 2747 [2021-11-20 23:37:33,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:37:33,909 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 430 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 3372 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:33,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 35 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3372 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:37:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-11-20 23:37:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1957. [2021-11-20 23:37:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1947 states have (on average 2.2696456086286596) internal successors, (4419), 1956 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 4419 transitions. [2021-11-20 23:37:33,960 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 4419 transitions. Word has length 15 [2021-11-20 23:37:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:33,960 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 4419 transitions. [2021-11-20 23:37:33,960 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 23:37:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 4419 transitions. [2021-11-20 23:37:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:37:33,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:33,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:33,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 23:37:33,962 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 23:37:33,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:33,963 INFO L85 PathProgramCache]: Analyzing trace with hash -495046284, now seen corresponding path program 9 times [2021-11-20 23:37:33,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:33,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288850565] [2021-11-20 23:37:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:33,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:34,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:34,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288850565] [2021-11-20 23:37:34,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288850565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:34,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:34,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:34,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629871218] [2021-11-20 23:37:34,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:34,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:34,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:34,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:34,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:34,247 INFO L87 Difference]: Start difference. First operand 1957 states and 4419 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:37,435 INFO L93 Difference]: Finished difference Result 2921 states and 6520 transitions. [2021-11-20 23:37:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:37:37,435 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 23:37:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:37,439 INFO L225 Difference]: With dead ends: 2921 [2021-11-20 23:37:37,439 INFO L226 Difference]: Without dead ends: 2921 [2021-11-20 23:37:37,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=409, Invalid=923, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 23:37:37,440 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 478 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:37,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 35 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:37:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-11-20 23:37:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1913. [2021-11-20 23:37:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1903 states have (on average 2.2643194955333685) internal successors, (4309), 1912 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 4309 transitions. [2021-11-20 23:37:37,489 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 4309 transitions. Word has length 15 [2021-11-20 23:37:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:37,489 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 4309 transitions. [2021-11-20 23:37:37,489 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 23:37:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 4309 transitions. [2021-11-20 23:37:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:37:37,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:37,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:37,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 23:37:37,491 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 23:37:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash 509178348, now seen corresponding path program 1 times [2021-11-20 23:37:37,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:37,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774944966] [2021-11-20 23:37:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:37,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:37,754 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 23:37:37,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:37,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774944966] [2021-11-20 23:37:37,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774944966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:37,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:37,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:37:37,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509280595] [2021-11-20 23:37:37,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:37,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:37:37,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:37:37,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:37:37,757 INFO L87 Difference]: Start difference. First operand 1913 states and 4309 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:40,013 INFO L93 Difference]: Finished difference Result 2945 states and 6553 transitions. [2021-11-20 23:37:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 23:37:40,014 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 23:37:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:40,017 INFO L225 Difference]: With dead ends: 2945 [2021-11-20 23:37:40,017 INFO L226 Difference]: Without dead ends: 2945 [2021-11-20 23:37:40,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:37:40,018 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 517 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:40,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 24 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:37:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-11-20 23:37:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1987. [2021-11-20 23:37:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1977 states have (on average 2.2660596863935254) internal successors, (4480), 1986 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 4480 transitions. [2021-11-20 23:37:40,066 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 4480 transitions. Word has length 16 [2021-11-20 23:37:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:40,067 INFO L470 AbstractCegarLoop]: Abstraction has 1987 states and 4480 transitions. [2021-11-20 23:37:40,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 4480 transitions. [2021-11-20 23:37:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:37:40,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:40,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:40,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 23:37:40,069 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 23:37:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash 424315018, now seen corresponding path program 2 times [2021-11-20 23:37:40,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:40,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265095676] [2021-11-20 23:37:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:40,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:40,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:40,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265095676] [2021-11-20 23:37:40,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265095676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:40,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:40,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:37:40,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905575346] [2021-11-20 23:37:40,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:40,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:37:40,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:37:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:37:40,285 INFO L87 Difference]: Start difference. First operand 1987 states and 4480 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:42,515 INFO L93 Difference]: Finished difference Result 3097 states and 6900 transitions. [2021-11-20 23:37:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 23:37:42,523 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 23:37:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:42,528 INFO L225 Difference]: With dead ends: 3097 [2021-11-20 23:37:42,529 INFO L226 Difference]: Without dead ends: 3097 [2021-11-20 23:37:42,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=368, Invalid=822, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:37:42,529 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 609 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:42,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 24 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:37:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-11-20 23:37:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 1982. [2021-11-20 23:37:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1972 states have (on average 2.265720081135903) internal successors, (4468), 1981 states have internal predecessors, (4468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 4468 transitions. [2021-11-20 23:37:42,578 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 4468 transitions. Word has length 16 [2021-11-20 23:37:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:42,578 INFO L470 AbstractCegarLoop]: Abstraction has 1982 states and 4468 transitions. [2021-11-20 23:37:42,578 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 23:37:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 4468 transitions. [2021-11-20 23:37:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:37:42,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:42,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:42,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 23:37:42,580 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 23:37:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash -962239554, now seen corresponding path program 3 times [2021-11-20 23:37:42,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:42,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071985095] [2021-11-20 23:37:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:42,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:42,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:42,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071985095] [2021-11-20 23:37:42,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071985095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:42,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:42,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:42,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62591341] [2021-11-20 23:37:42,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:42,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:42,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:42,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:42,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:42,775 INFO L87 Difference]: Start difference. First operand 1982 states and 4468 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:44,970 INFO L93 Difference]: Finished difference Result 2569 states and 5732 transitions. [2021-11-20 23:37:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:37:44,971 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 23:37:44,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:44,976 INFO L225 Difference]: With dead ends: 2569 [2021-11-20 23:37:44,976 INFO L226 Difference]: Without dead ends: 2569 [2021-11-20 23:37:44,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=396, Invalid=1010, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:37:44,978 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 680 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:44,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 22 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:37:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-11-20 23:37:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1974. [2021-11-20 23:37:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1964 states have (on average 2.2657841140529533) internal successors, (4450), 1973 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 4450 transitions. [2021-11-20 23:37:45,046 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 4450 transitions. Word has length 16 [2021-11-20 23:37:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:45,046 INFO L470 AbstractCegarLoop]: Abstraction has 1974 states and 4450 transitions. [2021-11-20 23:37:45,046 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 23:37:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 4450 transitions. [2021-11-20 23:37:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:37:45,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:45,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:45,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 23:37:45,048 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 23:37:45,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -815264520, now seen corresponding path program 4 times [2021-11-20 23:37:45,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:45,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875625205] [2021-11-20 23:37:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:45,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:45,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:45,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875625205] [2021-11-20 23:37:45,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875625205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:45,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:45,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:45,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078182876] [2021-11-20 23:37:45,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:45,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:45,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:45,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:45,239 INFO L87 Difference]: Start difference. First operand 1974 states and 4450 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:47,108 INFO L93 Difference]: Finished difference Result 2614 states and 5829 transitions. [2021-11-20 23:37:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 23:37:47,108 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 23:37:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:47,111 INFO L225 Difference]: With dead ends: 2614 [2021-11-20 23:37:47,111 INFO L226 Difference]: Without dead ends: 2614 [2021-11-20 23:37:47,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=331, Invalid=725, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 23:37:47,112 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 586 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:47,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 22 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:37:47,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2021-11-20 23:37:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 1978. [2021-11-20 23:37:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1968 states have (on average 2.2652439024390243) internal successors, (4458), 1977 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 4458 transitions. [2021-11-20 23:37:47,162 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 4458 transitions. Word has length 16 [2021-11-20 23:37:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:47,162 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 4458 transitions. [2021-11-20 23:37:47,162 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 23:37:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 4458 transitions. [2021-11-20 23:37:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:37:47,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:47,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:47,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 23:37:47,164 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 23:37:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:47,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1456597140, now seen corresponding path program 5 times [2021-11-20 23:37:47,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:47,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117804140] [2021-11-20 23:37:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:47,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:47,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:47,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117804140] [2021-11-20 23:37:47,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117804140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:47,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:47,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:47,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086106156] [2021-11-20 23:37:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:47,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:47,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:47,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:47,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:47,344 INFO L87 Difference]: Start difference. First operand 1978 states and 4458 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:49,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:49,330 INFO L93 Difference]: Finished difference Result 2650 states and 5911 transitions. [2021-11-20 23:37:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 23:37:49,343 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 23:37:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:49,347 INFO L225 Difference]: With dead ends: 2650 [2021-11-20 23:37:49,348 INFO L226 Difference]: Without dead ends: 2650 [2021-11-20 23:37:49,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=308, Invalid=748, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 23:37:49,349 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 576 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:49,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 22 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:37:49,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2021-11-20 23:37:49,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 1978. [2021-11-20 23:37:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1968 states have (on average 2.2652439024390243) internal successors, (4458), 1977 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:49,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 4458 transitions. [2021-11-20 23:37:49,392 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 4458 transitions. Word has length 16 [2021-11-20 23:37:49,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:49,392 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 4458 transitions. [2021-11-20 23:37:49,392 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 23:37:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 4458 transitions. [2021-11-20 23:37:49,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:37:49,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:49,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:49,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 23:37:49,394 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 23:37:49,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash 538258010, now seen corresponding path program 6 times [2021-11-20 23:37:49,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:49,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668602340] [2021-11-20 23:37:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:49,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:49,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:49,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668602340] [2021-11-20 23:37:49,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668602340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:49,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:49,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:37:49,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21234781] [2021-11-20 23:37:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:49,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:37:49,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:37:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:37:49,590 INFO L87 Difference]: Start difference. First operand 1978 states and 4458 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:51,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:51,649 INFO L93 Difference]: Finished difference Result 2617 states and 5835 transitions. [2021-11-20 23:37:51,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 23:37:51,650 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 23:37:51,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:51,653 INFO L225 Difference]: With dead ends: 2617 [2021-11-20 23:37:51,653 INFO L226 Difference]: Without dead ends: 2617 [2021-11-20 23:37:51,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=749, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 23:37:51,654 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 602 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:51,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 22 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:37:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2021-11-20 23:37:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1949. [2021-11-20 23:37:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1939 states have (on average 2.264569365652398) internal successors, (4391), 1948 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 4391 transitions. [2021-11-20 23:37:51,698 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 4391 transitions. Word has length 16 [2021-11-20 23:37:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:51,699 INFO L470 AbstractCegarLoop]: Abstraction has 1949 states and 4391 transitions. [2021-11-20 23:37:51,699 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 23:37:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 4391 transitions. [2021-11-20 23:37:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:37:51,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:51,700 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 23:37:51,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 23:37:51,701 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 23:37:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1065326767, now seen corresponding path program 1 times [2021-11-20 23:37:51,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:51,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839693000] [2021-11-20 23:37:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:51,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:52,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:52,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839693000] [2021-11-20 23:37:52,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839693000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:52,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:52,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:37:52,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219850795] [2021-11-20 23:37:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:52,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:37:52,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:37:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:37:52,811 INFO L87 Difference]: Start difference. First operand 1949 states and 4391 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:56,178 INFO L93 Difference]: Finished difference Result 3332 states and 7481 transitions. [2021-11-20 23:37:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 23:37:56,179 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 23:37:56,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:56,183 INFO L225 Difference]: With dead ends: 3332 [2021-11-20 23:37:56,183 INFO L226 Difference]: Without dead ends: 3332 [2021-11-20 23:37:56,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:37:56,184 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 529 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:56,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 35 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:37:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2021-11-20 23:37:56,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2156. [2021-11-20 23:37:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2146 states have (on average 2.284249767008388) internal successors, (4902), 2155 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:37:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 4902 transitions. [2021-11-20 23:37:56,232 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 4902 transitions. Word has length 17 [2021-11-20 23:37:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:56,232 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 4902 transitions. [2021-11-20 23:37:56,232 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 23:37:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 4902 transitions. [2021-11-20 23:37:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:37:56,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:56,234 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 23:37:56,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 23:37:56,234 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 23:37:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1079395807, now seen corresponding path program 2 times [2021-11-20 23:37:56,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:56,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373915856] [2021-11-20 23:37:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:56,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:37:57,307 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:57,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373915856] [2021-11-20 23:37:57,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373915856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:57,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:57,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:37:57,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429803765] [2021-11-20 23:37:57,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:57,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:37:57,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:37:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:37:57,309 INFO L87 Difference]: Start difference. First operand 2156 states and 4902 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:03,357 INFO L93 Difference]: Finished difference Result 4913 states and 11152 transitions. [2021-11-20 23:38:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:38:03,358 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 23:38:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:03,364 INFO L225 Difference]: With dead ends: 4913 [2021-11-20 23:38:03,364 INFO L226 Difference]: Without dead ends: 4913 [2021-11-20 23:38:03,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:38:03,365 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 773 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:03,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 24 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 23:38:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2021-11-20 23:38:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 2196. [2021-11-20 23:38:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2186 states have (on average 2.294602012808783) internal successors, (5016), 2195 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 5016 transitions. [2021-11-20 23:38:03,426 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 5016 transitions. Word has length 17 [2021-11-20 23:38:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:03,427 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 5016 transitions. [2021-11-20 23:38:03,427 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 23:38:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 5016 transitions. [2021-11-20 23:38:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:03,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:03,429 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 23:38:03,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 23:38:03,429 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 23:38:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1918027967, now seen corresponding path program 3 times [2021-11-20 23:38:03,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:03,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483667025] [2021-11-20 23:38:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:03,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:03,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:03,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483667025] [2021-11-20 23:38:03,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483667025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:03,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:03,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:38:03,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872734429] [2021-11-20 23:38:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:03,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:38:03,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:38:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:03,967 INFO L87 Difference]: Start difference. First operand 2196 states and 5016 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:06,785 INFO L93 Difference]: Finished difference Result 3681 states and 8405 transitions. [2021-11-20 23:38:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:38:06,785 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:38:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:06,790 INFO L225 Difference]: With dead ends: 3681 [2021-11-20 23:38:06,790 INFO L226 Difference]: Without dead ends: 3681 [2021-11-20 23:38:06,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2021-11-20 23:38:06,791 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 439 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:06,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 35 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:38:06,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-11-20 23:38:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2216. [2021-11-20 23:38:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-20 23:38:06,835 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-20 23:38:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:06,835 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-20 23:38:06,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-20 23:38:06,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:06,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:06,837 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 23:38:06,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 23:38:06,838 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 23:38:06,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash 303068501, now seen corresponding path program 4 times [2021-11-20 23:38:06,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:06,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910557739] [2021-11-20 23:38:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:06,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:07,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:07,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910557739] [2021-11-20 23:38:07,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910557739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:07,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:07,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:38:07,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077044529] [2021-11-20 23:38:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:07,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:38:07,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:38:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:38:07,855 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:13,176 INFO L93 Difference]: Finished difference Result 4524 states and 10339 transitions. [2021-11-20 23:38:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:38:13,176 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 23:38:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:13,181 INFO L225 Difference]: With dead ends: 4524 [2021-11-20 23:38:13,182 INFO L226 Difference]: Without dead ends: 4524 [2021-11-20 23:38:13,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=380, Invalid=1260, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:38:13,183 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 497 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:13,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 34 Invalid, 3733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-20 23:38:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2021-11-20 23:38:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 2231. [2021-11-20 23:38:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2221 states have (on average 2.295812696983341) internal successors, (5099), 2230 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 5099 transitions. [2021-11-20 23:38:13,237 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 5099 transitions. Word has length 17 [2021-11-20 23:38:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:13,237 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 5099 transitions. [2021-11-20 23:38:13,238 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 23:38:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 5099 transitions. [2021-11-20 23:38:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:13,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:13,239 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 23:38:13,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 23:38:13,239 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 23:38:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -994475021, now seen corresponding path program 5 times [2021-11-20 23:38:13,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:13,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876565995] [2021-11-20 23:38:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:13,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:13,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:13,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876565995] [2021-11-20 23:38:13,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876565995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:13,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:13,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:38:13,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036481173] [2021-11-20 23:38:13,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:13,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:38:13,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:38:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:13,678 INFO L87 Difference]: Start difference. First operand 2231 states and 5099 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:17,023 INFO L93 Difference]: Finished difference Result 3653 states and 8364 transitions. [2021-11-20 23:38:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 23:38:17,031 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:38:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:17,036 INFO L225 Difference]: With dead ends: 3653 [2021-11-20 23:38:17,036 INFO L226 Difference]: Without dead ends: 3653 [2021-11-20 23:38:17,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:38:17,037 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 500 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:17,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 35 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:38:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2021-11-20 23:38:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 2216. [2021-11-20 23:38:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-20 23:38:17,086 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-20 23:38:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:17,087 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-20 23:38:17,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:17,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-20 23:38:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:17,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:17,089 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 23:38:17,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 23:38:17,089 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 23:38:17,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:17,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1015805841, now seen corresponding path program 6 times [2021-11-20 23:38:17,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:17,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185196868] [2021-11-20 23:38:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:17,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:17,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185196868] [2021-11-20 23:38:17,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185196868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:17,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:17,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:38:17,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394141798] [2021-11-20 23:38:17,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:17,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:38:17,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:38:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:17,542 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:20,934 INFO L93 Difference]: Finished difference Result 3508 states and 8025 transitions. [2021-11-20 23:38:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 23:38:20,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:38:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:20,939 INFO L225 Difference]: With dead ends: 3508 [2021-11-20 23:38:20,939 INFO L226 Difference]: Without dead ends: 3508 [2021-11-20 23:38:20,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:38:20,940 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 500 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:20,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 35 Invalid, 3026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:38:20,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2021-11-20 23:38:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 2216. [2021-11-20 23:38:20,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2206 states have (on average 2.2937443336355394) internal successors, (5060), 2215 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 5060 transitions. [2021-11-20 23:38:20,971 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 5060 transitions. Word has length 17 [2021-11-20 23:38:20,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:20,971 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 5060 transitions. [2021-11-20 23:38:20,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:20,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 5060 transitions. [2021-11-20 23:38:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:20,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:20,972 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 23:38:20,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 23:38:20,972 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 23:38:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:20,973 INFO L85 PathProgramCache]: Analyzing trace with hash 89765701, now seen corresponding path program 7 times [2021-11-20 23:38:20,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:20,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102902991] [2021-11-20 23:38:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:20,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:21,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:21,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102902991] [2021-11-20 23:38:21,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102902991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:21,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:21,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:38:21,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399180300] [2021-11-20 23:38:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:21,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:38:21,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:38:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:38:21,449 INFO L87 Difference]: Start difference. First operand 2216 states and 5060 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:25,750 INFO L93 Difference]: Finished difference Result 3933 states and 8976 transitions. [2021-11-20 23:38:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:38:25,751 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 23:38:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:25,755 INFO L225 Difference]: With dead ends: 3933 [2021-11-20 23:38:25,756 INFO L226 Difference]: Without dead ends: 3933 [2021-11-20 23:38:25,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=457, Invalid=1265, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:38:25,757 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 605 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:25,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 35 Invalid, 3625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3585 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:38:25,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2021-11-20 23:38:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 2238. [2021-11-20 23:38:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-20 23:38:25,798 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-20 23:38:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:25,798 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-20 23:38:25,798 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 23:38:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-20 23:38:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:25,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:25,800 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 23:38:25,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-20 23:38:25,800 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 23:38:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash -44418589, now seen corresponding path program 8 times [2021-11-20 23:38:25,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:25,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969820648] [2021-11-20 23:38:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:25,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:26,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:26,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969820648] [2021-11-20 23:38:26,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969820648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:26,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:26,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:38:26,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17518255] [2021-11-20 23:38:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:26,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:38:26,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:26,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:38:26,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:26,301 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:30,875 INFO L93 Difference]: Finished difference Result 3295 states and 7487 transitions. [2021-11-20 23:38:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 23:38:30,875 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:38:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:30,879 INFO L225 Difference]: With dead ends: 3295 [2021-11-20 23:38:30,880 INFO L226 Difference]: Without dead ends: 3295 [2021-11-20 23:38:30,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 23:38:30,881 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 471 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:30,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 35 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:38:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-11-20 23:38:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2238. [2021-11-20 23:38:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-20 23:38:30,937 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-20 23:38:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:30,937 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-20 23:38:30,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-20 23:38:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:30,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:30,939 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 23:38:30,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-20 23:38:30,939 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 23:38:30,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:30,943 INFO L85 PathProgramCache]: Analyzing trace with hash -15267123, now seen corresponding path program 9 times [2021-11-20 23:38:30,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:30,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634385673] [2021-11-20 23:38:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:30,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:31,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:31,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634385673] [2021-11-20 23:38:31,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634385673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:31,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:31,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:38:31,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955162440] [2021-11-20 23:38:31,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:31,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:38:31,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:38:31,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:31,425 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:34,889 INFO L93 Difference]: Finished difference Result 3767 states and 8607 transitions. [2021-11-20 23:38:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 23:38:34,890 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:38:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:34,894 INFO L225 Difference]: With dead ends: 3767 [2021-11-20 23:38:34,894 INFO L226 Difference]: Without dead ends: 3767 [2021-11-20 23:38:34,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:38:34,895 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 542 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:34,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 35 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:38:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-20 23:38:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 2238. [2021-11-20 23:38:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2228 states have (on average 2.2926391382405744) internal successors, (5108), 2237 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:34,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5108 transitions. [2021-11-20 23:38:34,930 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5108 transitions. Word has length 17 [2021-11-20 23:38:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:34,930 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 5108 transitions. [2021-11-20 23:38:34,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5108 transitions. [2021-11-20 23:38:34,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:34,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:34,932 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 23:38:34,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-20 23:38:34,933 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 23:38:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -541902951, now seen corresponding path program 10 times [2021-11-20 23:38:34,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:34,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648167225] [2021-11-20 23:38:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:34,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:35,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:35,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648167225] [2021-11-20 23:38:35,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648167225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:35,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:35,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:38:35,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567391775] [2021-11-20 23:38:35,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:35,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:38:35,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:38:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:38:35,854 INFO L87 Difference]: Start difference. First operand 2238 states and 5108 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:41,528 INFO L93 Difference]: Finished difference Result 4956 states and 11280 transitions. [2021-11-20 23:38:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:38:41,528 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 23:38:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:41,534 INFO L225 Difference]: With dead ends: 4956 [2021-11-20 23:38:41,534 INFO L226 Difference]: Without dead ends: 4956 [2021-11-20 23:38:41,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=446, Invalid=1360, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:38:41,535 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 644 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 3165 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:41,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 34 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3165 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 23:38:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2021-11-20 23:38:41,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 2241. [2021-11-20 23:38:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2231 states have (on average 2.292693859255939) internal successors, (5115), 2240 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 5115 transitions. [2021-11-20 23:38:41,578 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 5115 transitions. Word has length 17 [2021-11-20 23:38:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:41,578 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 5115 transitions. [2021-11-20 23:38:41,579 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 23:38:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 5115 transitions. [2021-11-20 23:38:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 23:38:41,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:41,581 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 23:38:41,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-20 23:38:41,581 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 23:38:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1839446473, now seen corresponding path program 11 times [2021-11-20 23:38:41,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:41,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986590937] [2021-11-20 23:38:41,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:41,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:41,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:41,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986590937] [2021-11-20 23:38:41,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986590937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:41,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:41,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:38:41,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999622377] [2021-11-20 23:38:41,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:41,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:38:41,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:38:41,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:41,987 INFO L87 Difference]: Start difference. First operand 2241 states and 5115 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:45,198 INFO L93 Difference]: Finished difference Result 3901 states and 8879 transitions. [2021-11-20 23:38:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 23:38:45,198 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 23:38:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:45,203 INFO L225 Difference]: With dead ends: 3901 [2021-11-20 23:38:45,203 INFO L226 Difference]: Without dead ends: 3901 [2021-11-20 23:38:45,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:38:45,204 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 479 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:45,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 35 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:38:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2021-11-20 23:38:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 2147. [2021-11-20 23:38:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2137 states have (on average 2.2826392138511933) internal successors, (4878), 2146 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 4878 transitions. [2021-11-20 23:38:45,237 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 4878 transitions. Word has length 17 [2021-11-20 23:38:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:45,237 INFO L470 AbstractCegarLoop]: Abstraction has 2147 states and 4878 transitions. [2021-11-20 23:38:45,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 4878 transitions. [2021-11-20 23:38:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:38:45,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:45,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:45,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-20 23:38:45,238 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 23:38:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -306874337, now seen corresponding path program 1 times [2021-11-20 23:38:45,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:45,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774616055] [2021-11-20 23:38:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:45,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:45,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774616055] [2021-11-20 23:38:45,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774616055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:45,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:45,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:38:45,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508488455] [2021-11-20 23:38:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:45,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:38:45,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:38:45,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:45,536 INFO L87 Difference]: Start difference. First operand 2147 states and 4878 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:47,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:47,505 INFO L93 Difference]: Finished difference Result 3006 states and 6724 transitions. [2021-11-20 23:38:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:38:47,506 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 23:38:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:47,509 INFO L225 Difference]: With dead ends: 3006 [2021-11-20 23:38:47,510 INFO L226 Difference]: Without dead ends: 3006 [2021-11-20 23:38:47,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:38:47,510 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 398 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:47,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 17 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:38:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-20 23:38:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2247. [2021-11-20 23:38:47,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2237 states have (on average 2.282074206526598) internal successors, (5105), 2246 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 5105 transitions. [2021-11-20 23:38:47,542 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 5105 transitions. Word has length 18 [2021-11-20 23:38:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:47,542 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 5105 transitions. [2021-11-20 23:38:47,542 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 23:38:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 5105 transitions. [2021-11-20 23:38:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:38:47,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:47,543 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 23:38:47,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-20 23:38:47,544 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 23:38:47,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:47,544 INFO L85 PathProgramCache]: Analyzing trace with hash -509289767, now seen corresponding path program 2 times [2021-11-20 23:38:47,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:47,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168876100] [2021-11-20 23:38:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:47,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:47,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:47,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168876100] [2021-11-20 23:38:47,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168876100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:47,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:47,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:38:47,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26930448] [2021-11-20 23:38:47,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:47,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:38:47,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:47,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:38:47,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:38:47,847 INFO L87 Difference]: Start difference. First operand 2247 states and 5105 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:50,711 INFO L93 Difference]: Finished difference Result 3447 states and 7699 transitions. [2021-11-20 23:38:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:38:50,712 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 23:38:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:50,716 INFO L225 Difference]: With dead ends: 3447 [2021-11-20 23:38:50,716 INFO L226 Difference]: Without dead ends: 3447 [2021-11-20 23:38:50,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:38:50,717 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 627 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:50,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 34 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:38:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-11-20 23:38:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2353. [2021-11-20 23:38:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2343 states have (on average 2.2842509603072982) internal successors, (5352), 2352 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 5352 transitions. [2021-11-20 23:38:50,751 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 5352 transitions. Word has length 18 [2021-11-20 23:38:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:50,751 INFO L470 AbstractCegarLoop]: Abstraction has 2353 states and 5352 transitions. [2021-11-20 23:38:50,751 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 23:38:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 5352 transitions. [2021-11-20 23:38:50,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:38:50,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:50,752 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 23:38:50,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-20 23:38:50,753 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 23:38:50,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash -256155843, now seen corresponding path program 3 times [2021-11-20 23:38:50,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:50,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419844516] [2021-11-20 23:38:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:50,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:51,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:51,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419844516] [2021-11-20 23:38:51,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419844516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:51,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:51,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:38:51,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074839677] [2021-11-20 23:38:51,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:51,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:38:51,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:38:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:38:51,016 INFO L87 Difference]: Start difference. First operand 2353 states and 5352 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:52,939 INFO L93 Difference]: Finished difference Result 3370 states and 7516 transitions. [2021-11-20 23:38:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 23:38:52,939 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 23:38:52,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:52,943 INFO L225 Difference]: With dead ends: 3370 [2021-11-20 23:38:52,944 INFO L226 Difference]: Without dead ends: 3370 [2021-11-20 23:38:52,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:38:52,944 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 939 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:52,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 17 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:38:52,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-11-20 23:38:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 2273. [2021-11-20 23:38:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2263 states have (on average 2.280159080866107) internal successors, (5160), 2272 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 5160 transitions. [2021-11-20 23:38:52,981 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 5160 transitions. Word has length 18 [2021-11-20 23:38:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:52,982 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 5160 transitions. [2021-11-20 23:38:52,982 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 23:38:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 5160 transitions. [2021-11-20 23:38:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:38:52,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:52,983 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 23:38:52,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-20 23:38:52,984 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 23:38:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash -458571273, now seen corresponding path program 4 times [2021-11-20 23:38:52,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:52,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114198471] [2021-11-20 23:38:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:52,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:53,295 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 23:38:53,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:53,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114198471] [2021-11-20 23:38:53,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114198471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:53,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:53,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:38:53,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146837277] [2021-11-20 23:38:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:53,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:38:53,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:38:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:38:53,297 INFO L87 Difference]: Start difference. First operand 2273 states and 5160 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:56,365 INFO L93 Difference]: Finished difference Result 3517 states and 7849 transitions. [2021-11-20 23:38:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:38:56,366 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 23:38:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:56,370 INFO L225 Difference]: With dead ends: 3517 [2021-11-20 23:38:56,370 INFO L226 Difference]: Without dead ends: 3517 [2021-11-20 23:38:56,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=666, Invalid=1590, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:38:56,371 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 827 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:56,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 34 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:38:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2021-11-20 23:38:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2245. [2021-11-20 23:38:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2245 states, 2235 states have (on average 2.280089485458613) internal successors, (5096), 2244 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:38:56,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 5096 transitions. [2021-11-20 23:38:56,404 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 5096 transitions. Word has length 18 [2021-11-20 23:38:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:56,405 INFO L470 AbstractCegarLoop]: Abstraction has 2245 states and 5096 transitions. [2021-11-20 23:38:56,405 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 23:38:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 5096 transitions. [2021-11-20 23:38:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:38:56,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:56,406 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 23:38:56,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-20 23:38:56,406 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 23:38:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1151511107, now seen corresponding path program 5 times [2021-11-20 23:38:56,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:56,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764785924] [2021-11-20 23:38:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:56,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:38:56,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:56,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764785924] [2021-11-20 23:38:56,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764785924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:56,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:56,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:38:56,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955881229] [2021-11-20 23:38:56,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:56,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:38:56,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:56,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:38:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:38:56,682 INFO L87 Difference]: Start difference. First operand 2245 states and 5096 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:00,040 INFO L93 Difference]: Finished difference Result 3407 states and 7609 transitions. [2021-11-20 23:39:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:39:00,040 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 23:39:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:00,044 INFO L225 Difference]: With dead ends: 3407 [2021-11-20 23:39:00,044 INFO L226 Difference]: Without dead ends: 3407 [2021-11-20 23:39:00,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=698, Invalid=1654, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 23:39:00,046 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 944 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:00,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 34 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:39:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2021-11-20 23:39:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 2229. [2021-11-20 23:39:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2219 states have (on average 2.280757097791798) internal successors, (5061), 2228 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 5061 transitions. [2021-11-20 23:39:00,083 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 5061 transitions. Word has length 18 [2021-11-20 23:39:00,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:00,083 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 5061 transitions. [2021-11-20 23:39:00,083 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 23:39:00,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 5061 transitions. [2021-11-20 23:39:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:00,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:00,085 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 23:39:00,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-20 23:39:00,086 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:39:00,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:00,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1322906576, now seen corresponding path program 1 times [2021-11-20 23:39:00,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:00,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276227236] [2021-11-20 23:39:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:00,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:00,343 INFO 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 23:39:00,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:00,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276227236] [2021-11-20 23:39:00,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276227236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:00,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:00,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:39:00,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457370893] [2021-11-20 23:39:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:00,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:39:00,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:39:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:39:00,345 INFO L87 Difference]: Start difference. First operand 2229 states and 5061 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:03,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:03,479 INFO L93 Difference]: Finished difference Result 4440 states and 10020 transitions. [2021-11-20 23:39:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:39:03,479 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 23:39:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:03,500 INFO L225 Difference]: With dead ends: 4440 [2021-11-20 23:39:03,500 INFO L226 Difference]: Without dead ends: 4440 [2021-11-20 23:39:03,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2021-11-20 23:39:03,501 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 523 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 3654 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:03,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 54 Invalid, 3694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3654 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:39:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2021-11-20 23:39:03,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 2524. [2021-11-20 23:39:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2514 states have (on average 2.290373906125696) internal successors, (5758), 2523 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 5758 transitions. [2021-11-20 23:39:03,537 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 5758 transitions. Word has length 18 [2021-11-20 23:39:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:03,538 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 5758 transitions. [2021-11-20 23:39:03,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 5758 transitions. [2021-11-20 23:39:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:03,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:03,539 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 23:39:03,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-20 23:39:03,539 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 23:39:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1295237775, now seen corresponding path program 6 times [2021-11-20 23:39:03,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:03,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992176612] [2021-11-20 23:39:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:03,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:03,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:03,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992176612] [2021-11-20 23:39:03,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992176612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:03,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:03,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:39:03,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43847999] [2021-11-20 23:39:03,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:03,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:39:03,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:39:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:39:03,800 INFO L87 Difference]: Start difference. First operand 2524 states and 5758 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:06,386 INFO L93 Difference]: Finished difference Result 3071 states and 6923 transitions. [2021-11-20 23:39:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:39:06,386 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 23:39:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:06,389 INFO L225 Difference]: With dead ends: 3071 [2021-11-20 23:39:06,390 INFO L226 Difference]: Without dead ends: 3071 [2021-11-20 23:39:06,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2021-11-20 23:39:06,390 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 622 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:06,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 16 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:39:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2021-11-20 23:39:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 2558. [2021-11-20 23:39:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2548 states have (on average 2.2892464678178963) internal successors, (5833), 2557 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 5833 transitions. [2021-11-20 23:39:06,425 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 5833 transitions. Word has length 18 [2021-11-20 23:39:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:06,425 INFO L470 AbstractCegarLoop]: Abstraction has 2558 states and 5833 transitions. [2021-11-20 23:39:06,426 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 23:39:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 5833 transitions. [2021-11-20 23:39:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:06,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:06,427 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 23:39:06,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-20 23:39:06,428 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 23:39:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:06,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1497653205, now seen corresponding path program 7 times [2021-11-20 23:39:06,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:06,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131849317] [2021-11-20 23:39:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:06,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:06,693 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:06,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131849317] [2021-11-20 23:39:06,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131849317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:06,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:06,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:39:06,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231081018] [2021-11-20 23:39:06,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:06,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:39:06,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:39:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:39:06,695 INFO L87 Difference]: Start difference. First operand 2558 states and 5833 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:10,235 INFO L93 Difference]: Finished difference Result 3233 states and 7274 transitions. [2021-11-20 23:39:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:39:10,236 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 23:39:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:10,240 INFO L225 Difference]: With dead ends: 3233 [2021-11-20 23:39:10,240 INFO L226 Difference]: Without dead ends: 3233 [2021-11-20 23:39:10,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:39:10,241 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 622 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 4250 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:10,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 32 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4250 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:39:10,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2021-11-20 23:39:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 2514. [2021-11-20 23:39:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 2504 states have (on average 2.2895367412140577) internal successors, (5733), 2513 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 5733 transitions. [2021-11-20 23:39:10,277 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 5733 transitions. Word has length 18 [2021-11-20 23:39:10,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:10,277 INFO L470 AbstractCegarLoop]: Abstraction has 2514 states and 5733 transitions. [2021-11-20 23:39:10,278 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 23:39:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 5733 transitions. [2021-11-20 23:39:10,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:10,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:10,280 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 23:39:10,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-20 23:39:10,280 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 23:39:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:10,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2104374257, now seen corresponding path program 8 times [2021-11-20 23:39:10,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:10,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092879966] [2021-11-20 23:39:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:10,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:10,522 INFO 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 23:39:10,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:10,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092879966] [2021-11-20 23:39:10,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092879966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:10,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:10,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:39:10,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617865306] [2021-11-20 23:39:10,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:10,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:39:10,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:39:10,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:39:10,524 INFO L87 Difference]: Start difference. First operand 2514 states and 5733 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:13,391 INFO L93 Difference]: Finished difference Result 3260 states and 7339 transitions. [2021-11-20 23:39:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:39:13,391 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 23:39:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:13,410 INFO L225 Difference]: With dead ends: 3260 [2021-11-20 23:39:13,410 INFO L226 Difference]: Without dead ends: 3260 [2021-11-20 23:39:13,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=504, Invalid=1752, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:39:13,412 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 818 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 3141 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:13,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 32 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3141 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:39:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-11-20 23:39:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 2503. [2021-11-20 23:39:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2493 states have (on average 2.2904131568391497) internal successors, (5710), 2502 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 5710 transitions. [2021-11-20 23:39:13,442 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 5710 transitions. Word has length 18 [2021-11-20 23:39:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:13,443 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 5710 transitions. [2021-11-20 23:39:13,443 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 23:39:13,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 5710 transitions. [2021-11-20 23:39:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:13,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:13,444 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 23:39:13,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-20 23:39:13,445 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 23:39:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1786150869, now seen corresponding path program 9 times [2021-11-20 23:39:13,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:13,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015710116] [2021-11-20 23:39:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:13,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:13,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:13,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015710116] [2021-11-20 23:39:13,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015710116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:13,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:13,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:39:13,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439300442] [2021-11-20 23:39:13,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:13,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:39:13,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:39:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:39:13,698 INFO L87 Difference]: Start difference. First operand 2503 states and 5710 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:15,961 INFO L93 Difference]: Finished difference Result 3045 states and 6869 transitions. [2021-11-20 23:39:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 23:39:15,962 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 23:39:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:15,965 INFO L225 Difference]: With dead ends: 3045 [2021-11-20 23:39:15,965 INFO L226 Difference]: Without dead ends: 3045 [2021-11-20 23:39:15,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:39:15,967 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 535 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:15,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 16 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:39:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2021-11-20 23:39:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2527. [2021-11-20 23:39:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2517 states have (on average 2.2888359157727454) internal successors, (5761), 2526 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 5761 transitions. [2021-11-20 23:39:16,001 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 5761 transitions. Word has length 18 [2021-11-20 23:39:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:16,001 INFO L470 AbstractCegarLoop]: Abstraction has 2527 states and 5761 transitions. [2021-11-20 23:39:16,001 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 23:39:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 5761 transitions. [2021-11-20 23:39:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:16,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:16,003 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 23:39:16,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-20 23:39:16,003 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 23:39:16,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1988566299, now seen corresponding path program 10 times [2021-11-20 23:39:16,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:16,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987482517] [2021-11-20 23:39:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:16,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:16,278 INFO 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 23:39:16,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:16,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987482517] [2021-11-20 23:39:16,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987482517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:16,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:16,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:39:16,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081014445] [2021-11-20 23:39:16,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:16,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:39:16,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:39:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:39:16,280 INFO L87 Difference]: Start difference. First operand 2527 states and 5761 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:19,680 INFO L93 Difference]: Finished difference Result 3238 states and 7284 transitions. [2021-11-20 23:39:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:39:19,681 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 23:39:19,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:19,685 INFO L225 Difference]: With dead ends: 3238 [2021-11-20 23:39:19,685 INFO L226 Difference]: Without dead ends: 3238 [2021-11-20 23:39:19,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=524, Invalid=1368, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 23:39:19,686 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 626 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 4018 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:19,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 32 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4018 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:39:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2021-11-20 23:39:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 2521. [2021-11-20 23:39:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2511 states have (on average 2.2891278375149344) internal successors, (5748), 2520 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 5748 transitions. [2021-11-20 23:39:19,719 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 5748 transitions. Word has length 18 [2021-11-20 23:39:19,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:19,719 INFO L470 AbstractCegarLoop]: Abstraction has 2521 states and 5748 transitions. [2021-11-20 23:39:19,719 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 23:39:19,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 5748 transitions. [2021-11-20 23:39:19,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:19,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:19,720 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 23:39:19,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-20 23:39:19,720 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 23:39:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1613461163, now seen corresponding path program 11 times [2021-11-20 23:39:19,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:19,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281106977] [2021-11-20 23:39:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:19,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:19,926 INFO 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 23:39:19,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:19,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281106977] [2021-11-20 23:39:19,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281106977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:19,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:19,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:39:19,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358138590] [2021-11-20 23:39:19,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:19,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:39:19,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:19,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:39:19,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:39:19,927 INFO L87 Difference]: Start difference. First operand 2521 states and 5748 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:23,321 INFO L93 Difference]: Finished difference Result 3300 states and 7422 transitions. [2021-11-20 23:39:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:39:23,322 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 23:39:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:23,325 INFO L225 Difference]: With dead ends: 3300 [2021-11-20 23:39:23,325 INFO L226 Difference]: Without dead ends: 3300 [2021-11-20 23:39:23,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=540, Invalid=1352, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 23:39:23,327 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 615 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:23,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 32 Invalid, 4121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:39:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2021-11-20 23:39:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2520. [2021-11-20 23:39:23,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2510 states have (on average 2.289243027888446) internal successors, (5746), 2519 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 5746 transitions. [2021-11-20 23:39:23,367 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 5746 transitions. Word has length 18 [2021-11-20 23:39:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:23,367 INFO L470 AbstractCegarLoop]: Abstraction has 2520 states and 5746 transitions. [2021-11-20 23:39:23,367 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 23:39:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 5746 transitions. [2021-11-20 23:39:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:23,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:23,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:23,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-20 23:39:23,369 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 23:39:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash -441864539, now seen corresponding path program 12 times [2021-11-20 23:39:23,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:23,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568326306] [2021-11-20 23:39:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:23,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:23,614 INFO 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 23:39:23,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568326306] [2021-11-20 23:39:23,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568326306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:23,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:23,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:39:23,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213672693] [2021-11-20 23:39:23,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:23,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:39:23,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:39:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:39:23,616 INFO L87 Difference]: Start difference. First operand 2520 states and 5746 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:27,113 INFO L93 Difference]: Finished difference Result 3322 states and 7469 transitions. [2021-11-20 23:39:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:39:27,114 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 23:39:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:27,119 INFO L225 Difference]: With dead ends: 3322 [2021-11-20 23:39:27,119 INFO L226 Difference]: Without dead ends: 3322 [2021-11-20 23:39:27,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=618, Invalid=1452, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:39:27,120 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 773 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:27,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 32 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:39:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2021-11-20 23:39:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 2524. [2021-11-20 23:39:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2514 states have (on average 2.288782816229117) internal successors, (5754), 2523 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:27,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 5754 transitions. [2021-11-20 23:39:27,154 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 5754 transitions. Word has length 18 [2021-11-20 23:39:27,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:27,155 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 5754 transitions. [2021-11-20 23:39:27,155 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 23:39:27,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 5754 transitions. [2021-11-20 23:39:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:27,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:27,156 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 23:39:27,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-20 23:39:27,156 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 23:39:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1800629701, now seen corresponding path program 13 times [2021-11-20 23:39:27,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:27,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436950855] [2021-11-20 23:39:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:27,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:27,397 INFO 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 23:39:27,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:27,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436950855] [2021-11-20 23:39:27,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436950855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:27,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:27,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:39:27,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050778063] [2021-11-20 23:39:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:27,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:39:27,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:39:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:39:27,398 INFO L87 Difference]: Start difference. First operand 2524 states and 5754 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:31,734 INFO L93 Difference]: Finished difference Result 3411 states and 7663 transitions. [2021-11-20 23:39:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:39:31,735 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 23:39:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:31,739 INFO L225 Difference]: With dead ends: 3411 [2021-11-20 23:39:31,739 INFO L226 Difference]: Without dead ends: 3411 [2021-11-20 23:39:31,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=688, Invalid=1664, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 23:39:31,740 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 687 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 4924 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:31,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 32 Invalid, 4962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4924 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 23:39:31,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-11-20 23:39:31,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 2517. [2021-11-20 23:39:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2507 states have (on average 2.289190267251695) internal successors, (5739), 2516 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 5739 transitions. [2021-11-20 23:39:31,779 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 5739 transitions. Word has length 18 [2021-11-20 23:39:31,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:31,779 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 5739 transitions. [2021-11-20 23:39:31,780 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 23:39:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 5739 transitions. [2021-11-20 23:39:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:31,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:31,781 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 23:39:31,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-20 23:39:31,781 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 23:39:31,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:31,781 INFO L85 PathProgramCache]: Analyzing trace with hash -370481977, now seen corresponding path program 14 times [2021-11-20 23:39:31,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:31,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716113097] [2021-11-20 23:39:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:31,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:32,040 INFO 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 23:39:32,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:32,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716113097] [2021-11-20 23:39:32,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716113097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:32,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:32,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:39:32,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775230802] [2021-11-20 23:39:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:32,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:39:32,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:39:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:39:32,041 INFO L87 Difference]: Start difference. First operand 2517 states and 5739 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:34,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:34,732 INFO L93 Difference]: Finished difference Result 3109 states and 7007 transitions. [2021-11-20 23:39:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 23:39:34,732 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 23:39:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:34,738 INFO L225 Difference]: With dead ends: 3109 [2021-11-20 23:39:34,738 INFO L226 Difference]: Without dead ends: 3109 [2021-11-20 23:39:34,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:39:34,739 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 510 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:34,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 16 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:39:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-11-20 23:39:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2540. [2021-11-20 23:39:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2530 states have (on average 2.2889328063241106) internal successors, (5791), 2539 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 5791 transitions. [2021-11-20 23:39:34,788 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 5791 transitions. Word has length 18 [2021-11-20 23:39:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:34,788 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 5791 transitions. [2021-11-20 23:39:34,788 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 23:39:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 5791 transitions. [2021-11-20 23:39:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:34,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:34,790 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 23:39:34,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-20 23:39:34,791 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 23:39:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash -572897407, now seen corresponding path program 15 times [2021-11-20 23:39:34,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:34,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749453676] [2021-11-20 23:39:34,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:34,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:35,074 INFO 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 23:39:35,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:35,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749453676] [2021-11-20 23:39:35,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749453676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:35,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:35,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:39:35,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627708056] [2021-11-20 23:39:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:35,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:39:35,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:39:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:39:35,076 INFO L87 Difference]: Start difference. First operand 2540 states and 5791 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:38,266 INFO L93 Difference]: Finished difference Result 3340 states and 7500 transitions. [2021-11-20 23:39:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:39:38,267 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 23:39:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:38,271 INFO L225 Difference]: With dead ends: 3340 [2021-11-20 23:39:38,271 INFO L226 Difference]: Without dead ends: 3340 [2021-11-20 23:39:38,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=490, Invalid=1232, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:39:38,272 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 635 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:38,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 32 Invalid, 3433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3383 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:39:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2021-11-20 23:39:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 2518. [2021-11-20 23:39:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2508 states have (on average 2.2890749601275915) internal successors, (5741), 2517 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 5741 transitions. [2021-11-20 23:39:38,331 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 5741 transitions. Word has length 18 [2021-11-20 23:39:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:38,331 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 5741 transitions. [2021-11-20 23:39:38,331 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 23:39:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 5741 transitions. [2021-11-20 23:39:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:38,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:38,332 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 23:39:38,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-20 23:39:38,332 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 23:39:38,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1265837241, now seen corresponding path program 16 times [2021-11-20 23:39:38,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:38,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993274584] [2021-11-20 23:39:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:38,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:38,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:38,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993274584] [2021-11-20 23:39:38,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993274584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:38,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:38,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:39:38,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106983193] [2021-11-20 23:39:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:38,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:39:38,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:38,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:39:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:39:38,559 INFO L87 Difference]: Start difference. First operand 2518 states and 5741 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:42,144 INFO L93 Difference]: Finished difference Result 3367 states and 7565 transitions. [2021-11-20 23:39:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:39:42,145 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 23:39:42,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:42,151 INFO L225 Difference]: With dead ends: 3367 [2021-11-20 23:39:42,151 INFO L226 Difference]: Without dead ends: 3367 [2021-11-20 23:39:42,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=505, Invalid=1217, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:39:42,152 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 606 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:42,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 32 Invalid, 3911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:39:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2021-11-20 23:39:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 2509. [2021-11-20 23:39:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2499 states have (on average 2.289715886354542) internal successors, (5722), 2508 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 5722 transitions. [2021-11-20 23:39:42,187 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 5722 transitions. Word has length 18 [2021-11-20 23:39:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:42,188 INFO L470 AbstractCegarLoop]: Abstraction has 2509 states and 5722 transitions. [2021-11-20 23:39:42,188 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 23:39:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 5722 transitions. [2021-11-20 23:39:42,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:42,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:42,189 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 23:39:42,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-20 23:39:42,189 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 23:39:42,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:42,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1868877069, now seen corresponding path program 17 times [2021-11-20 23:39:42,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:42,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866472036] [2021-11-20 23:39:42,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:42,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:42,449 INFO 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 23:39:42,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:42,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866472036] [2021-11-20 23:39:42,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866472036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:42,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:42,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:39:42,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887744978] [2021-11-20 23:39:42,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:42,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:39:42,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:42,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:39:42,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:39:42,451 INFO L87 Difference]: Start difference. First operand 2509 states and 5722 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:44,703 INFO L93 Difference]: Finished difference Result 3090 states and 6956 transitions. [2021-11-20 23:39:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 23:39:44,703 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 23:39:44,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:44,707 INFO L225 Difference]: With dead ends: 3090 [2021-11-20 23:39:44,707 INFO L226 Difference]: Without dead ends: 3090 [2021-11-20 23:39:44,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:39:44,708 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 595 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:44,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 16 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:39:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-20 23:39:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2502. [2021-11-20 23:39:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2492 states have (on average 2.289325842696629) internal successors, (5705), 2501 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 5705 transitions. [2021-11-20 23:39:44,746 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 5705 transitions. Word has length 18 [2021-11-20 23:39:44,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:44,746 INFO L470 AbstractCegarLoop]: Abstraction has 2502 states and 5705 transitions. [2021-11-20 23:39:44,746 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 23:39:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 5705 transitions. [2021-11-20 23:39:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:44,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:44,748 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 23:39:44,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-20 23:39:44,749 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 23:39:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:44,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1666461639, now seen corresponding path program 18 times [2021-11-20 23:39:44,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:44,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939657315] [2021-11-20 23:39:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:44,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:44,988 INFO 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 23:39:44,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:44,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939657315] [2021-11-20 23:39:44,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939657315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:44,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:44,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:39:44,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120750787] [2021-11-20 23:39:44,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:44,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:39:44,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:44,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:39:44,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:39:44,989 INFO L87 Difference]: Start difference. First operand 2502 states and 5705 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:47,861 INFO L93 Difference]: Finished difference Result 3362 states and 7546 transitions. [2021-11-20 23:39:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:39:47,861 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 23:39:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:47,865 INFO L225 Difference]: With dead ends: 3362 [2021-11-20 23:39:47,866 INFO L226 Difference]: Without dead ends: 3362 [2021-11-20 23:39:47,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:39:47,866 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 693 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:47,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 32 Invalid, 3024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:39:47,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2021-11-20 23:39:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 2469. [2021-11-20 23:39:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2459 states have (on average 2.2895485969906466) internal successors, (5630), 2468 states have internal predecessors, (5630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 5630 transitions. [2021-11-20 23:39:47,899 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 5630 transitions. Word has length 18 [2021-11-20 23:39:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:47,899 INFO L470 AbstractCegarLoop]: Abstraction has 2469 states and 5630 transitions. [2021-11-20 23:39:47,899 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 23:39:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 5630 transitions. [2021-11-20 23:39:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:39:47,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:47,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:47,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-20 23:39:47,901 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 23:39:47,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash 973521805, now seen corresponding path program 19 times [2021-11-20 23:39:47,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:47,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108076141] [2021-11-20 23:39:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:47,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:48,158 INFO 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 23:39:48,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:48,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108076141] [2021-11-20 23:39:48,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108076141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:48,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:48,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:39:48,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12158930] [2021-11-20 23:39:48,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:48,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:39:48,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:39:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:39:48,160 INFO L87 Difference]: Start difference. First operand 2469 states and 5630 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:51,072 INFO L93 Difference]: Finished difference Result 3311 states and 7435 transitions. [2021-11-20 23:39:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:39:51,073 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 23:39:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:51,076 INFO L225 Difference]: With dead ends: 3311 [2021-11-20 23:39:51,076 INFO L226 Difference]: Without dead ends: 3311 [2021-11-20 23:39:51,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=504, Invalid=1218, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:39:51,077 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 706 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:51,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 32 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:39:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-11-20 23:39:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 2459. [2021-11-20 23:39:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2449 states have (on average 2.2903225806451615) internal successors, (5609), 2458 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 5609 transitions. [2021-11-20 23:39:51,108 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 5609 transitions. Word has length 18 [2021-11-20 23:39:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:51,109 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 5609 transitions. [2021-11-20 23:39:51,109 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 23:39:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 5609 transitions. [2021-11-20 23:39:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:39:51,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:51,110 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 23:39:51,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-20 23:39:51,110 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 23:39:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash -66502804, now seen corresponding path program 1 times [2021-11-20 23:39:51,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072516517] [2021-11-20 23:39:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:51,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:51,463 INFO 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 23:39:51,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072516517] [2021-11-20 23:39:51,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072516517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:51,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:51,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:39:51,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946009971] [2021-11-20 23:39:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:51,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:39:51,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:39:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:39:51,464 INFO L87 Difference]: Start difference. First operand 2459 states and 5609 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:55,221 INFO L93 Difference]: Finished difference Result 5464 states and 12399 transitions. [2021-11-20 23:39:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:39:55,222 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 23:39:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:55,228 INFO L225 Difference]: With dead ends: 5464 [2021-11-20 23:39:55,228 INFO L226 Difference]: Without dead ends: 5464 [2021-11-20 23:39:55,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=663, Invalid=1689, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 23:39:55,229 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 924 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3636 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:55,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 34 Invalid, 3765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3636 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:39:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2021-11-20 23:39:55,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 2753. [2021-11-20 23:39:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2743 states have (on average 2.3117025154939848) internal successors, (6341), 2752 states have internal predecessors, (6341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 6341 transitions. [2021-11-20 23:39:55,292 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 6341 transitions. Word has length 20 [2021-11-20 23:39:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:55,292 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 6341 transitions. [2021-11-20 23:39:55,292 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 23:39:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 6341 transitions. [2021-11-20 23:39:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:39:55,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:55,294 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 23:39:55,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-20 23:39:55,295 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 23:39:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1810355950, now seen corresponding path program 1 times [2021-11-20 23:39:55,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:55,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858263691] [2021-11-20 23:39:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:55,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:57,272 INFO 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 23:39:57,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:57,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858263691] [2021-11-20 23:39:57,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858263691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:57,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:57,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:39:57,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225683158] [2021-11-20 23:39:57,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:57,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:39:57,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:57,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:39:57,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:39:57,274 INFO L87 Difference]: Start difference. First operand 2753 states and 6341 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:04,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:04,235 INFO L93 Difference]: Finished difference Result 4191 states and 9520 transitions. [2021-11-20 23:40:04,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 23:40:04,235 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:40:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:04,240 INFO L225 Difference]: With dead ends: 4191 [2021-11-20 23:40:04,240 INFO L226 Difference]: Without dead ends: 4191 [2021-11-20 23:40:04,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=323, Invalid=1483, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:40:04,241 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 667 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:04,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 24 Invalid, 4572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 23:40:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2021-11-20 23:40:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 2901. [2021-11-20 23:40:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2891 states have (on average 2.3220338983050848) internal successors, (6713), 2900 states have internal predecessors, (6713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 6713 transitions. [2021-11-20 23:40:04,280 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 6713 transitions. Word has length 20 [2021-11-20 23:40:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:04,280 INFO L470 AbstractCegarLoop]: Abstraction has 2901 states and 6713 transitions. [2021-11-20 23:40:04,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 6713 transitions. [2021-11-20 23:40:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:04,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:04,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:04,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-20 23:40:04,282 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 23:40:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1778596980, now seen corresponding path program 2 times [2021-11-20 23:40:04,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136929102] [2021-11-20 23:40:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:04,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:05,740 INFO 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 23:40:05,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:05,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136929102] [2021-11-20 23:40:05,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136929102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:05,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:05,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:40:05,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128393352] [2021-11-20 23:40:05,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:05,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:40:05,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:05,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:40:05,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:40:05,742 INFO L87 Difference]: Start difference. First operand 2901 states and 6713 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:11,352 INFO L93 Difference]: Finished difference Result 4081 states and 9320 transitions. [2021-11-20 23:40:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 23:40:11,353 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 23:40:11,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:11,357 INFO L225 Difference]: With dead ends: 4081 [2021-11-20 23:40:11,357 INFO L226 Difference]: Without dead ends: 4081 [2021-11-20 23:40:11,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 23:40:11,358 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 702 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 3516 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:11,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 24 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3516 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 23:40:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-11-20 23:40:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 2914. [2021-11-20 23:40:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2904 states have (on average 2.3209366391184574) internal successors, (6740), 2913 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 6740 transitions. [2021-11-20 23:40:11,400 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 6740 transitions. Word has length 20 [2021-11-20 23:40:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:11,400 INFO L470 AbstractCegarLoop]: Abstraction has 2914 states and 6740 transitions. [2021-11-20 23:40:11,400 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 23:40:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 6740 transitions. [2021-11-20 23:40:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:11,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:11,401 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 23:40:11,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-20 23:40:11,402 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 23:40:11,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:11,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1429329674, now seen corresponding path program 2 times [2021-11-20 23:40:11,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:11,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946600253] [2021-11-20 23:40:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:11,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:11,750 INFO 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 23:40:11,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:11,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946600253] [2021-11-20 23:40:11,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946600253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:11,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:11,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:40:11,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176360124] [2021-11-20 23:40:11,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:11,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:40:11,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:11,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:40:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:40:11,751 INFO L87 Difference]: Start difference. First operand 2914 states and 6740 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:15,650 INFO L93 Difference]: Finished difference Result 7182 states and 16436 transitions. [2021-11-20 23:40:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 23:40:15,651 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 23:40:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:15,660 INFO L225 Difference]: With dead ends: 7182 [2021-11-20 23:40:15,660 INFO L226 Difference]: Without dead ends: 7182 [2021-11-20 23:40:15,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=825, Invalid=2145, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 23:40:15,660 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1252 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 3064 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:15,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 34 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 3064 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:40:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7182 states. [2021-11-20 23:40:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7182 to 3199. [2021-11-20 23:40:15,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 3189 states have (on average 2.3361555346503606) internal successors, (7450), 3198 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 7450 transitions. [2021-11-20 23:40:15,721 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 7450 transitions. Word has length 20 [2021-11-20 23:40:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:15,721 INFO L470 AbstractCegarLoop]: Abstraction has 3199 states and 7450 transitions. [2021-11-20 23:40:15,721 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 23:40:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 7450 transitions. [2021-11-20 23:40:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:15,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:15,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:15,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-20 23:40:15,724 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 23:40:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1341948864, now seen corresponding path program 3 times [2021-11-20 23:40:15,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:15,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480107906] [2021-11-20 23:40:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:15,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:16,054 INFO 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 23:40:16,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:16,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480107906] [2021-11-20 23:40:16,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480107906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:16,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:16,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:40:16,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188385234] [2021-11-20 23:40:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:16,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:40:16,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:40:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:40:16,056 INFO L87 Difference]: Start difference. First operand 3199 states and 7450 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:20,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:20,058 INFO L93 Difference]: Finished difference Result 7664 states and 17657 transitions. [2021-11-20 23:40:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 23:40:20,058 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 23:40:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:20,068 INFO L225 Difference]: With dead ends: 7664 [2021-11-20 23:40:20,068 INFO L226 Difference]: Without dead ends: 7664 [2021-11-20 23:40:20,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=866, Invalid=2104, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 23:40:20,068 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1428 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:20,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 34 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:40:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2021-11-20 23:40:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 2906. [2021-11-20 23:40:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2896 states have (on average 2.320441988950276) internal successors, (6720), 2905 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 6720 transitions. [2021-11-20 23:40:20,133 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 6720 transitions. Word has length 20 [2021-11-20 23:40:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:20,133 INFO L470 AbstractCegarLoop]: Abstraction has 2906 states and 6720 transitions. [2021-11-20 23:40:20,133 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 23:40:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 6720 transitions. [2021-11-20 23:40:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:20,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:20,135 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 23:40:20,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-20 23:40:20,135 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:40:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:20,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1515230971, now seen corresponding path program 1 times [2021-11-20 23:40:20,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:20,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392531756] [2021-11-20 23:40:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:20,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:20,338 INFO 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 23:40:20,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:20,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392531756] [2021-11-20 23:40:20,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392531756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:20,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:20,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:40:20,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72039147] [2021-11-20 23:40:20,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:20,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:40:20,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:40:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:40:20,340 INFO L87 Difference]: Start difference. First operand 2906 states and 6720 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:23,967 INFO L93 Difference]: Finished difference Result 12443 states and 28036 transitions. [2021-11-20 23:40:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:40:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:40:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:24,017 INFO L225 Difference]: With dead ends: 12443 [2021-11-20 23:40:24,017 INFO L226 Difference]: Without dead ends: 12403 [2021-11-20 23:40:24,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=484, Invalid=1322, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:40:24,027 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1642 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:24,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 166 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:40:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12403 states. [2021-11-20 23:40:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12403 to 3003. [2021-11-20 23:40:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2993 states have (on average 2.317741396592048) internal successors, (6937), 3002 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 6937 transitions. [2021-11-20 23:40:24,185 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 6937 transitions. Word has length 20 [2021-11-20 23:40:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:24,186 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 6937 transitions. [2021-11-20 23:40:24,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 6937 transitions. [2021-11-20 23:40:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:24,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:24,189 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 23:40:24,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-20 23:40:24,189 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 23:40:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:24,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1257557666, now seen corresponding path program 3 times [2021-11-20 23:40:24,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:24,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623274047] [2021-11-20 23:40:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:24,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:26,013 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 23:40:26,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:26,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623274047] [2021-11-20 23:40:26,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623274047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:26,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:26,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:40:26,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713315058] [2021-11-20 23:40:26,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:26,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:40:26,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:40:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:40:26,015 INFO L87 Difference]: Start difference. First operand 3003 states and 6937 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:34,541 INFO L93 Difference]: Finished difference Result 4202 states and 9607 transitions. [2021-11-20 23:40:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:40:34,541 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:40:34,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:34,548 INFO L225 Difference]: With dead ends: 4202 [2021-11-20 23:40:34,548 INFO L226 Difference]: Without dead ends: 4202 [2021-11-20 23:40:34,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=370, Invalid=1792, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 23:40:34,548 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 686 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 6119 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 6119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:34,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 35 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 6119 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-20 23:40:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-11-20 23:40:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3038. [2021-11-20 23:40:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3028 states have (on average 2.3183619550858654) internal successors, (7020), 3037 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 7020 transitions. [2021-11-20 23:40:34,590 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 7020 transitions. Word has length 20 [2021-11-20 23:40:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:34,591 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 7020 transitions. [2021-11-20 23:40:34,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 7020 transitions. [2021-11-20 23:40:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:34,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:34,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:34,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-20 23:40:34,593 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 23:40:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1225798696, now seen corresponding path program 4 times [2021-11-20 23:40:34,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:34,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943751454] [2021-11-20 23:40:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:34,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:36,089 INFO 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 23:40:36,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:36,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943751454] [2021-11-20 23:40:36,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943751454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:36,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:36,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:40:36,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282037171] [2021-11-20 23:40:36,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:36,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:40:36,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:36,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:40:36,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:40:36,090 INFO L87 Difference]: Start difference. First operand 3038 states and 7020 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:43,463 INFO L93 Difference]: Finished difference Result 4285 states and 9815 transitions. [2021-11-20 23:40:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 23:40:43,463 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 23:40:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:43,471 INFO L225 Difference]: With dead ends: 4285 [2021-11-20 23:40:43,472 INFO L226 Difference]: Without dead ends: 4285 [2021-11-20 23:40:43,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=356, Invalid=1284, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:40:43,472 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 556 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 5553 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 5553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:43,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 34 Invalid, 5591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 5553 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 23:40:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2021-11-20 23:40:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 3003. [2021-11-20 23:40:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2993 states have (on average 2.317741396592048) internal successors, (6937), 3002 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 6937 transitions. [2021-11-20 23:40:43,552 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 6937 transitions. Word has length 20 [2021-11-20 23:40:43,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:43,553 INFO L470 AbstractCegarLoop]: Abstraction has 3003 states and 6937 transitions. [2021-11-20 23:40:43,553 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 23:40:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 6937 transitions. [2021-11-20 23:40:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:43,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:43,555 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 23:40:43,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-20 23:40:43,556 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 23:40:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash -695994306, now seen corresponding path program 4 times [2021-11-20 23:40:43,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:43,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830892626] [2021-11-20 23:40:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:43,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:43,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:43,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830892626] [2021-11-20 23:40:43,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830892626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:43,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:43,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:40:43,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28356234] [2021-11-20 23:40:43,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:43,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:40:43,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:43,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:40:43,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:40:43,854 INFO L87 Difference]: Start difference. First operand 3003 states and 6937 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:47,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:47,237 INFO L93 Difference]: Finished difference Result 4492 states and 10268 transitions. [2021-11-20 23:40:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:40:47,237 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 23:40:47,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:47,247 INFO L225 Difference]: With dead ends: 4492 [2021-11-20 23:40:47,250 INFO L226 Difference]: Without dead ends: 4492 [2021-11-20 23:40:47,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:40:47,251 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 883 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 3948 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:47,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 32 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3948 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:40:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2021-11-20 23:40:47,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 3040. [2021-11-20 23:40:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3030 states have (on average 2.3165016501650166) internal successors, (7019), 3039 states have internal predecessors, (7019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 7019 transitions. [2021-11-20 23:40:47,318 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 7019 transitions. Word has length 20 [2021-11-20 23:40:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:47,319 INFO L470 AbstractCegarLoop]: Abstraction has 3040 states and 7019 transitions. [2021-11-20 23:40:47,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 7019 transitions. [2021-11-20 23:40:47,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:47,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:47,322 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 23:40:47,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-20 23:40:47,323 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 23:40:47,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash 827694452, now seen corresponding path program 5 times [2021-11-20 23:40:47,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:47,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101641857] [2021-11-20 23:40:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:47,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:47,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:47,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101641857] [2021-11-20 23:40:47,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101641857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:47,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:47,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:40:47,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154890127] [2021-11-20 23:40:47,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:47,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:40:47,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:40:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:40:47,611 INFO L87 Difference]: Start difference. First operand 3040 states and 7019 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:51,080 INFO L93 Difference]: Finished difference Result 4931 states and 11323 transitions. [2021-11-20 23:40:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:40:51,081 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 23:40:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:51,089 INFO L225 Difference]: With dead ends: 4931 [2021-11-20 23:40:51,089 INFO L226 Difference]: Without dead ends: 4931 [2021-11-20 23:40:51,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=456, Invalid=1800, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:40:51,090 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 912 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 3988 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:51,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 32 Invalid, 4041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3988 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:40:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2021-11-20 23:40:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 3039. [2021-11-20 23:40:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 3029 states have (on average 2.3169362826015187) internal successors, (7018), 3038 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 7018 transitions. [2021-11-20 23:40:51,157 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 7018 transitions. Word has length 20 [2021-11-20 23:40:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:51,157 INFO L470 AbstractCegarLoop]: Abstraction has 3039 states and 7018 transitions. [2021-11-20 23:40:51,157 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 23:40:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 7018 transitions. [2021-11-20 23:40:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:51,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:51,159 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 23:40:51,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-20 23:40:51,159 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:40:51,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:51,159 INFO L85 PathProgramCache]: Analyzing trace with hash 654412345, now seen corresponding path program 2 times [2021-11-20 23:40:51,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:51,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477166238] [2021-11-20 23:40:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:51,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:51,333 INFO 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 23:40:51,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:51,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477166238] [2021-11-20 23:40:51,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477166238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:51,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:51,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:40:51,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905098227] [2021-11-20 23:40:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:51,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:40:51,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:51,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:40:51,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:40:51,335 INFO L87 Difference]: Start difference. First operand 3039 states and 7018 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:54,758 INFO L93 Difference]: Finished difference Result 9504 states and 21443 transitions. [2021-11-20 23:40:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 23:40:54,759 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:40:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:54,771 INFO L225 Difference]: With dead ends: 9504 [2021-11-20 23:40:54,771 INFO L226 Difference]: Without dead ends: 9468 [2021-11-20 23:40:54,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1135, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:40:54,772 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 1149 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 4109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:54,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 193 Invalid, 4109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:40:54,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9468 states. [2021-11-20 23:40:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9468 to 2958. [2021-11-20 23:40:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2948 states have (on average 2.3181818181818183) internal successors, (6834), 2957 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 6834 transitions. [2021-11-20 23:40:54,849 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 6834 transitions. Word has length 20 [2021-11-20 23:40:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:54,849 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 6834 transitions. [2021-11-20 23:40:54,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 6834 transitions. [2021-11-20 23:40:54,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:54,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:54,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:54,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-20 23:40:54,851 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 23:40:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash -17075080, now seen corresponding path program 6 times [2021-11-20 23:40:54,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:54,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075973449] [2021-11-20 23:40:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:54,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:55,148 INFO 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 23:40:55,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:55,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075973449] [2021-11-20 23:40:55,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075973449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:55,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:55,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:40:55,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140564127] [2021-11-20 23:40:55,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:55,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:40:55,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:55,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:40:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:40:55,150 INFO L87 Difference]: Start difference. First operand 2958 states and 6834 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:59,018 INFO L93 Difference]: Finished difference Result 4387 states and 10036 transitions. [2021-11-20 23:40:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 23:40:59,019 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 23:40:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:59,024 INFO L225 Difference]: With dead ends: 4387 [2021-11-20 23:40:59,024 INFO L226 Difference]: Without dead ends: 4387 [2021-11-20 23:40:59,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=427, Invalid=1213, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:40:59,025 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 635 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 4665 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:59,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 32 Invalid, 4711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4665 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 23:40:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-11-20 23:40:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 2959. [2021-11-20 23:40:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2949 states have (on average 2.318073923363852) internal successors, (6836), 2958 states have internal predecessors, (6836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 6836 transitions. [2021-11-20 23:40:59,066 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 6836 transitions. Word has length 20 [2021-11-20 23:40:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:59,067 INFO L470 AbstractCegarLoop]: Abstraction has 2959 states and 6836 transitions. [2021-11-20 23:40:59,067 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 23:40:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 6836 transitions. [2021-11-20 23:40:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:59,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:59,069 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 23:40:59,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-20 23:40:59,069 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 23:40:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1506613678, now seen corresponding path program 7 times [2021-11-20 23:40:59,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:59,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541248931] [2021-11-20 23:40:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:59,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:59,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:59,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541248931] [2021-11-20 23:40:59,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541248931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:59,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:59,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:40:59,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789721953] [2021-11-20 23:40:59,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:59,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:40:59,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:40:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:40:59,352 INFO L87 Difference]: Start difference. First operand 2959 states and 6836 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:02,696 INFO L93 Difference]: Finished difference Result 4653 states and 10682 transitions. [2021-11-20 23:41:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:41:02,699 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 23:41:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:02,705 INFO L225 Difference]: With dead ends: 4653 [2021-11-20 23:41:02,705 INFO L226 Difference]: Without dead ends: 4653 [2021-11-20 23:41:02,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=442, Invalid=1198, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:41:02,706 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 731 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:02,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 32 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:41:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-11-20 23:41:02,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 2958. [2021-11-20 23:41:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2948 states have (on average 2.3181818181818183) internal successors, (6834), 2957 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 6834 transitions. [2021-11-20 23:41:02,768 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 6834 transitions. Word has length 20 [2021-11-20 23:41:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:02,769 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 6834 transitions. [2021-11-20 23:41:02,769 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 23:41:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 6834 transitions. [2021-11-20 23:41:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:41:02,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:02,770 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 23:41:02,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-20 23:41:02,771 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 23:41:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2054491808, now seen corresponding path program 8 times [2021-11-20 23:41:02,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:02,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210172751] [2021-11-20 23:41:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:02,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:03,029 INFO 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 23:41:03,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:03,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210172751] [2021-11-20 23:41:03,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210172751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:03,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:03,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:41:03,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985190086] [2021-11-20 23:41:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:03,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:41:03,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:41:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:41:03,031 INFO L87 Difference]: Start difference. First operand 2958 states and 6834 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:07,253 INFO L93 Difference]: Finished difference Result 5670 states and 13061 transitions. [2021-11-20 23:41:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 23:41:07,253 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 23:41:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:07,260 INFO L225 Difference]: With dead ends: 5670 [2021-11-20 23:41:07,260 INFO L226 Difference]: Without dead ends: 5670 [2021-11-20 23:41:07,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=597, Invalid=1565, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 23:41:07,261 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1140 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:07,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 32 Invalid, 4828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 23:41:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-11-20 23:41:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 3020. [2021-11-20 23:41:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3010 states have (on average 2.317607973421927) internal successors, (6976), 3019 states have internal predecessors, (6976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 6976 transitions. [2021-11-20 23:41:07,315 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 6976 transitions. Word has length 20 [2021-11-20 23:41:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:07,315 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 6976 transitions. [2021-11-20 23:41:07,315 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 23:41:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 6976 transitions. [2021-11-20 23:41:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:41:07,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:07,317 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 23:41:07,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-20 23:41:07,317 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:41:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1920307518, now seen corresponding path program 9 times [2021-11-20 23:41:07,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:07,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687849146] [2021-11-20 23:41:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:07,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:07,620 INFO 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 23:41:07,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687849146] [2021-11-20 23:41:07,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687849146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:07,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:07,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:41:07,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416539160] [2021-11-20 23:41:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:07,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:41:07,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:41:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:41:07,622 INFO L87 Difference]: Start difference. First operand 3020 states and 6976 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:11,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:11,803 INFO L93 Difference]: Finished difference Result 5253 states and 12057 transitions. [2021-11-20 23:41:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 23:41:11,807 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 23:41:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:11,813 INFO L225 Difference]: With dead ends: 5253 [2021-11-20 23:41:11,814 INFO L226 Difference]: Without dead ends: 5253 [2021-11-20 23:41:11,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 23:41:11,815 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1032 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4477 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:11,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 32 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 4477 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 23:41:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5253 states. [2021-11-20 23:41:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5253 to 3020. [2021-11-20 23:41:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3010 states have (on average 2.317607973421927) internal successors, (6976), 3019 states have internal predecessors, (6976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 6976 transitions. [2021-11-20 23:41:11,870 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 6976 transitions. Word has length 20 [2021-11-20 23:41:11,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:11,870 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 6976 transitions. [2021-11-20 23:41:11,870 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 23:41:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 6976 transitions. [2021-11-20 23:41:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:41:11,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:11,872 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 23:41:11,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-20 23:41:11,872 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 23:41:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1063902700, now seen corresponding path program 10 times [2021-11-20 23:41:11,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:11,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174678041] [2021-11-20 23:41:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:11,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:12,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:12,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174678041] [2021-11-20 23:41:12,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174678041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:12,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:12,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:41:12,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790194220] [2021-11-20 23:41:12,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:12,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:41:12,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:41:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:41:12,126 INFO L87 Difference]: Start difference. First operand 3020 states and 6976 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:15,125 INFO L93 Difference]: Finished difference Result 4576 states and 10442 transitions. [2021-11-20 23:41:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 23:41:15,126 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 23:41:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:15,131 INFO L225 Difference]: With dead ends: 4576 [2021-11-20 23:41:15,131 INFO L226 Difference]: Without dead ends: 4576 [2021-11-20 23:41:15,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=427, Invalid=1133, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:41:15,132 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 795 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:15,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 32 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:41:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2021-11-20 23:41:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 3019. [2021-11-20 23:41:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 3009 states have (on average 2.3177135260884016) internal successors, (6974), 3018 states have internal predecessors, (6974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 6974 transitions. [2021-11-20 23:41:15,207 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 6974 transitions. Word has length 20 [2021-11-20 23:41:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:15,207 INFO L470 AbstractCegarLoop]: Abstraction has 3019 states and 6974 transitions. [2021-11-20 23:41:15,207 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 23:41:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 6974 transitions. [2021-11-20 23:41:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:41:15,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:15,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:41:15,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-20 23:41:15,209 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 23:41:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash 459786058, now seen corresponding path program 11 times [2021-11-20 23:41:15,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:15,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425937618] [2021-11-20 23:41:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:15,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:15,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:15,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425937618] [2021-11-20 23:41:15,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425937618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:15,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:15,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 23:41:15,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602396985] [2021-11-20 23:41:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:15,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:41:15,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:41:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:41:15,508 INFO L87 Difference]: Start difference. First operand 3019 states and 6974 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:19,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:19,447 INFO L93 Difference]: Finished difference Result 4977 states and 11409 transitions. [2021-11-20 23:41:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:41:19,448 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 23:41:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:19,454 INFO L225 Difference]: With dead ends: 4977 [2021-11-20 23:41:19,454 INFO L226 Difference]: Without dead ends: 4977 [2021-11-20 23:41:19,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=488, Invalid=1234, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:41:19,454 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 795 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:19,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 32 Invalid, 4251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4199 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 23:41:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2021-11-20 23:41:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 2939. [2021-11-20 23:41:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2929 states have (on average 2.3188801638784566) internal successors, (6792), 2938 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 6792 transitions. [2021-11-20 23:41:19,500 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 6792 transitions. Word has length 20 [2021-11-20 23:41:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:19,500 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 6792 transitions. [2021-11-20 23:41:19,500 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 23:41:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 6792 transitions. [2021-11-20 23:41:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:41:19,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:19,501 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 23:41:19,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-20 23:41:19,502 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 23:41:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash -247937146, now seen corresponding path program 5 times [2021-11-20 23:41:19,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:19,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320692758] [2021-11-20 23:41:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:19,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:21,189 INFO 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 23:41:21,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:21,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320692758] [2021-11-20 23:41:21,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320692758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:21,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:21,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:41:21,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797525624] [2021-11-20 23:41:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:21,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:41:21,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:41:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:41:21,190 INFO L87 Difference]: Start difference. First operand 2939 states and 6792 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:28,992 INFO L93 Difference]: Finished difference Result 4017 states and 9184 transitions. [2021-11-20 23:41:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:41:28,992 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:41:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:28,996 INFO L225 Difference]: With dead ends: 4017 [2021-11-20 23:41:28,997 INFO L226 Difference]: Without dead ends: 4017 [2021-11-20 23:41:28,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=409, Invalid=1753, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 23:41:28,997 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 761 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 5700 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 5700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:28,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 35 Invalid, 5761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 5700 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-20 23:41:29,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2021-11-20 23:41:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 2955. [2021-11-20 23:41:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2945 states have (on average 2.3185059422750425) internal successors, (6828), 2954 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 6828 transitions. [2021-11-20 23:41:29,056 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 6828 transitions. Word has length 20 [2021-11-20 23:41:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:29,056 INFO L470 AbstractCegarLoop]: Abstraction has 2955 states and 6828 transitions. [2021-11-20 23:41:29,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 6828 transitions. [2021-11-20 23:41:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:41:29,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:29,059 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 23:41:29,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-20 23:41:29,059 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 23:41:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash -216178176, now seen corresponding path program 6 times [2021-11-20 23:41:29,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:29,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840952443] [2021-11-20 23:41:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:29,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:30,498 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 23:41:30,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:30,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840952443] [2021-11-20 23:41:30,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840952443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:30,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:30,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:41:30,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982018272] [2021-11-20 23:41:30,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:30,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:41:30,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:41:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:41:30,500 INFO L87 Difference]: Start difference. First operand 2955 states and 6828 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:38,062 INFO L93 Difference]: Finished difference Result 4115 states and 9425 transitions. [2021-11-20 23:41:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 23:41:38,063 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 23:41:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:38,067 INFO L225 Difference]: With dead ends: 4115 [2021-11-20 23:41:38,067 INFO L226 Difference]: Without dead ends: 4115 [2021-11-20 23:41:38,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=395, Invalid=1411, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 23:41:38,068 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 742 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 4973 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:38,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 35 Invalid, 5019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4973 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 23:41:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-11-20 23:41:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 2948. [2021-11-20 23:41:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.318924438393465) internal successors, (6813), 2947 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6813 transitions. [2021-11-20 23:41:38,108 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6813 transitions. Word has length 20 [2021-11-20 23:41:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:38,108 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6813 transitions. [2021-11-20 23:41:38,108 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 23:41:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6813 transitions. [2021-11-20 23:41:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:41:38,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:38,110 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 23:41:38,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-20 23:41:38,110 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 23:41:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1728617314, now seen corresponding path program 7 times [2021-11-20 23:41:38,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:38,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401313527] [2021-11-20 23:41:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:38,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:40,406 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 23:41:40,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:40,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401313527] [2021-11-20 23:41:40,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401313527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:40,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:40,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:41:40,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447240653] [2021-11-20 23:41:40,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:40,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:41:40,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:40,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:41:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:41:40,408 INFO L87 Difference]: Start difference. First operand 2948 states and 6813 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:54,359 INFO L93 Difference]: Finished difference Result 3950 states and 9046 transitions. [2021-11-20 23:41:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 23:41:54,360 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:41:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:54,364 INFO L225 Difference]: With dead ends: 3950 [2021-11-20 23:41:54,364 INFO L226 Difference]: Without dead ends: 3950 [2021-11-20 23:41:54,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2021-11-20 23:41:54,365 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 773 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 7457 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 7457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:54,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 25 Invalid, 7501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 7457 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-20 23:41:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2021-11-20 23:41:54,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 2948. [2021-11-20 23:41:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.318924438393465) internal successors, (6813), 2947 states have internal predecessors, (6813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6813 transitions. [2021-11-20 23:41:54,418 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6813 transitions. Word has length 20 [2021-11-20 23:41:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:54,418 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6813 transitions. [2021-11-20 23:41:54,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:41:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6813 transitions. [2021-11-20 23:41:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:41:54,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:54,419 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 23:41:54,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-20 23:41:54,420 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 23:41:54,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1278584104, now seen corresponding path program 8 times [2021-11-20 23:41:54,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:41:54,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612511577] [2021-11-20 23:41:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:54,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:41:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:56,053 INFO 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 23:41:56,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:41:56,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612511577] [2021-11-20 23:41:56,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612511577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:56,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:56,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:41:56,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818826709] [2021-11-20 23:41:56,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:56,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:41:56,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:41:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:41:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:41:56,054 INFO L87 Difference]: Start difference. First operand 2948 states and 6813 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:02,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:02,066 INFO L93 Difference]: Finished difference Result 3954 states and 9050 transitions. [2021-11-20 23:42:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 23:42:02,067 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 23:42:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:02,071 INFO L225 Difference]: With dead ends: 3954 [2021-11-20 23:42:02,071 INFO L226 Difference]: Without dead ends: 3954 [2021-11-20 23:42:02,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 23:42:02,072 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 792 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:02,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 25 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-20 23:42:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-11-20 23:42:02,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 2950. [2021-11-20 23:42:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2940 states have (on average 2.3187074829931973) internal successors, (6817), 2949 states have internal predecessors, (6817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 6817 transitions. [2021-11-20 23:42:02,111 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 6817 transitions. Word has length 20 [2021-11-20 23:42:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:02,111 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 6817 transitions. [2021-11-20 23:42:02,111 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 23:42:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 6817 transitions. [2021-11-20 23:42:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:42:02,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:02,113 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 23:42:02,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-20 23:42:02,113 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 23:42:02,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1252419680, now seen corresponding path program 9 times [2021-11-20 23:42:02,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:02,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496533766] [2021-11-20 23:42:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:02,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:03,952 INFO 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 23:42:03,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:03,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496533766] [2021-11-20 23:42:03,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496533766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:03,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:03,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:42:03,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77990281] [2021-11-20 23:42:03,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:03,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:42:03,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:03,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:42:03,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:42:03,954 INFO L87 Difference]: Start difference. First operand 2950 states and 6817 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:13,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:13,532 INFO L93 Difference]: Finished difference Result 4021 states and 9205 transitions. [2021-11-20 23:42:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:42:13,532 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 23:42:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:13,537 INFO L225 Difference]: With dead ends: 4021 [2021-11-20 23:42:13,537 INFO L226 Difference]: Without dead ends: 4021 [2021-11-20 23:42:13,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=368, Invalid=1612, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 23:42:13,537 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 636 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 7177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:13,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 25 Invalid, 7216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 7177 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-20 23:42:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-11-20 23:42:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 2952. [2021-11-20 23:42:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2942 states have (on average 2.3184908225696805) internal successors, (6821), 2951 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:13,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 6821 transitions. [2021-11-20 23:42:13,579 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 6821 transitions. Word has length 20 [2021-11-20 23:42:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:13,580 INFO L470 AbstractCegarLoop]: Abstraction has 2952 states and 6821 transitions. [2021-11-20 23:42:13,580 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 23:42:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 6821 transitions. [2021-11-20 23:42:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:42:13,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:13,581 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 23:42:13,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-20 23:42:13,582 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 23:42:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:13,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1195224482, now seen corresponding path program 10 times [2021-11-20 23:42:13,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:13,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549227898] [2021-11-20 23:42:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:13,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:15,163 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 23:42:15,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:15,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549227898] [2021-11-20 23:42:15,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549227898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:15,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:15,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:42:15,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924422193] [2021-11-20 23:42:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:15,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:42:15,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:15,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:42:15,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:42:15,164 INFO L87 Difference]: Start difference. First operand 2952 states and 6821 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:23,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:23,699 INFO L93 Difference]: Finished difference Result 4007 states and 9174 transitions. [2021-11-20 23:42:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:42:23,699 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 23:42:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:23,704 INFO L225 Difference]: With dead ends: 4007 [2021-11-20 23:42:23,704 INFO L226 Difference]: Without dead ends: 4007 [2021-11-20 23:42:23,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=437, Invalid=1819, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:42:23,705 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 772 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 5384 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:23,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 25 Invalid, 5425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 5384 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-20 23:42:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-20 23:42:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 2954. [2021-11-20 23:42:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-20 23:42:23,759 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-20 23:42:23,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:23,760 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-20 23:42:23,760 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 23:42:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-20 23:42:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:42:23,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:23,761 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 23:42:23,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-20 23:42:23,761 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 23:42:23,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1762869424, now seen corresponding path program 11 times [2021-11-20 23:42:23,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:23,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757973545] [2021-11-20 23:42:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:23,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:25,416 INFO 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 23:42:25,416 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:25,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757973545] [2021-11-20 23:42:25,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757973545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:25,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:25,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:42:25,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223028370] [2021-11-20 23:42:25,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:25,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:42:25,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:42:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:42:25,417 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:33,170 INFO L93 Difference]: Finished difference Result 4331 states and 9912 transitions. [2021-11-20 23:42:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:42:33,171 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 23:42:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:33,176 INFO L225 Difference]: With dead ends: 4331 [2021-11-20 23:42:33,176 INFO L226 Difference]: Without dead ends: 4331 [2021-11-20 23:42:33,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 23:42:33,176 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 723 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 5604 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:33,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 25 Invalid, 5648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 5604 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 23:42:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2021-11-20 23:42:33,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 2954. [2021-11-20 23:42:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-20 23:42:33,228 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-20 23:42:33,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:33,228 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-20 23:42:33,228 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 23:42:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-20 23:42:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:42:33,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:33,230 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 23:42:33,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-20 23:42:33,230 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 23:42:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash 504204054, now seen corresponding path program 12 times [2021-11-20 23:42:33,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:33,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946118017] [2021-11-20 23:42:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:33,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:35,456 INFO 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 23:42:35,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:35,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946118017] [2021-11-20 23:42:35,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946118017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:35,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:35,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:42:35,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512497353] [2021-11-20 23:42:35,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:35,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:42:35,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:35,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:42:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:42:35,457 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:46,398 INFO L93 Difference]: Finished difference Result 3988 states and 9128 transitions. [2021-11-20 23:42:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:42:46,398 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:42:46,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:46,403 INFO L225 Difference]: With dead ends: 3988 [2021-11-20 23:42:46,403 INFO L226 Difference]: Without dead ends: 3988 [2021-11-20 23:42:46,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=464, Invalid=1986, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 23:42:46,403 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 881 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 5802 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:46,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 25 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 5802 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-20 23:42:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2021-11-20 23:42:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 2954. [2021-11-20 23:42:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2944 states have (on average 2.3182744565217392) internal successors, (6825), 2953 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6825 transitions. [2021-11-20 23:42:46,444 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6825 transitions. Word has length 20 [2021-11-20 23:42:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:46,444 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 6825 transitions. [2021-11-20 23:42:46,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6825 transitions. [2021-11-20 23:42:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:42:46,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:46,446 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 23:42:46,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-20 23:42:46,446 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 23:42:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -598248128, now seen corresponding path program 13 times [2021-11-20 23:42:46,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:46,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586616992] [2021-11-20 23:42:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:46,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:48,851 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 23:42:48,851 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:48,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586616992] [2021-11-20 23:42:48,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586616992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:48,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:48,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:42:48,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84761565] [2021-11-20 23:42:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:48,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:42:48,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:42:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:42:48,852 INFO L87 Difference]: Start difference. First operand 2954 states and 6825 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:01,959 INFO L93 Difference]: Finished difference Result 3987 states and 9155 transitions. [2021-11-20 23:43:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 23:43:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:43:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:01,964 INFO L225 Difference]: With dead ends: 3987 [2021-11-20 23:43:01,964 INFO L226 Difference]: Without dead ends: 3987 [2021-11-20 23:43:01,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=550, Invalid=2312, Unknown=0, NotChecked=0, Total=2862 [2021-11-20 23:43:01,964 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 759 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 6586 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 6586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:01,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 35 Invalid, 6630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 6586 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-20 23:43:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2021-11-20 23:43:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 2945. [2021-11-20 23:43:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2935 states have (on average 2.318228279386712) internal successors, (6804), 2944 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 6804 transitions. [2021-11-20 23:43:02,003 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 6804 transitions. Word has length 20 [2021-11-20 23:43:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:02,004 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 6804 transitions. [2021-11-20 23:43:02,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 6804 transitions. [2021-11-20 23:43:02,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:43:02,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:02,005 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 23:43:02,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-20 23:43:02,006 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 23:43:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash 663493322, now seen corresponding path program 14 times [2021-11-20 23:43:02,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:02,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278425508] [2021-11-20 23:43:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:02,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:03,637 INFO 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 23:43:03,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:03,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278425508] [2021-11-20 23:43:03,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278425508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:03,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:03,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:43:03,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107197616] [2021-11-20 23:43:03,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:03,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:43:03,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:43:03,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:43:03,639 INFO L87 Difference]: Start difference. First operand 2945 states and 6804 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:12,772 INFO L93 Difference]: Finished difference Result 4586 states and 10459 transitions. [2021-11-20 23:43:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 23:43:12,772 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:43:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:12,777 INFO L225 Difference]: With dead ends: 4586 [2021-11-20 23:43:12,778 INFO L226 Difference]: Without dead ends: 4586 [2021-11-20 23:43:12,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=624, Invalid=2568, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 23:43:12,778 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 939 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 5275 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 5275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:12,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 34 Invalid, 5355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 5275 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 23:43:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-11-20 23:43:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 2970. [2021-11-20 23:43:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2960 states have (on average 2.3172297297297297) internal successors, (6859), 2969 states have internal predecessors, (6859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 6859 transitions. [2021-11-20 23:43:12,823 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 6859 transitions. Word has length 20 [2021-11-20 23:43:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:12,824 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 6859 transitions. [2021-11-20 23:43:12,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 6859 transitions. [2021-11-20 23:43:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:43:12,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:12,826 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 23:43:12,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-20 23:43:12,826 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 23:43:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash 695252292, now seen corresponding path program 15 times [2021-11-20 23:43:12,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:12,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003889920] [2021-11-20 23:43:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:12,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:14,240 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 23:43:14,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:14,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003889920] [2021-11-20 23:43:14,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003889920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:14,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:14,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:43:14,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026868083] [2021-11-20 23:43:14,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:14,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:43:14,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:43:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:43:14,242 INFO L87 Difference]: Start difference. First operand 2970 states and 6859 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:22,249 INFO L93 Difference]: Finished difference Result 4312 states and 9865 transitions. [2021-11-20 23:43:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 23:43:22,250 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 23:43:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:22,255 INFO L225 Difference]: With dead ends: 4312 [2021-11-20 23:43:22,255 INFO L226 Difference]: Without dead ends: 4312 [2021-11-20 23:43:22,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=462, Invalid=1608, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:43:22,256 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 681 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 5399 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 5399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:22,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 34 Invalid, 5447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 5399 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-20 23:43:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2021-11-20 23:43:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 2945. [2021-11-20 23:43:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2935 states have (on average 2.318228279386712) internal successors, (6804), 2944 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 6804 transitions. [2021-11-20 23:43:22,315 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 6804 transitions. Word has length 20 [2021-11-20 23:43:22,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:22,315 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 6804 transitions. [2021-11-20 23:43:22,315 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 23:43:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 6804 transitions. [2021-11-20 23:43:22,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:43:22,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:22,317 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 23:43:22,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-20 23:43:22,317 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 23:43:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash -998762342, now seen corresponding path program 16 times [2021-11-20 23:43:22,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:22,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177256257] [2021-11-20 23:43:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:22,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:23,972 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 23:43:23,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:23,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177256257] [2021-11-20 23:43:23,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177256257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:23,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:23,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:43:23,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357770420] [2021-11-20 23:43:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:23,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:43:23,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:43:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:43:23,973 INFO L87 Difference]: Start difference. First operand 2945 states and 6804 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:31,571 INFO L93 Difference]: Finished difference Result 4452 states and 10145 transitions. [2021-11-20 23:43:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:43:31,572 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 23:43:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:31,577 INFO L225 Difference]: With dead ends: 4452 [2021-11-20 23:43:31,577 INFO L226 Difference]: Without dead ends: 4452 [2021-11-20 23:43:31,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=369, Invalid=1701, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:43:31,577 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 655 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 5504 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 5504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:31,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 34 Invalid, 5570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 5504 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-20 23:43:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2021-11-20 23:43:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 2976. [2021-11-20 23:43:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2966 states have (on average 2.317936614969656) internal successors, (6875), 2975 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 6875 transitions. [2021-11-20 23:43:31,620 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 6875 transitions. Word has length 20 [2021-11-20 23:43:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:31,620 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 6875 transitions. [2021-11-20 23:43:31,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 6875 transitions. [2021-11-20 23:43:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:43:31,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:31,622 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 23:43:31,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-20 23:43:31,622 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 23:43:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash -967003372, now seen corresponding path program 17 times [2021-11-20 23:43:31,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:31,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013154660] [2021-11-20 23:43:31,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:31,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:32,952 INFO 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 23:43:32,952 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:32,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013154660] [2021-11-20 23:43:32,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013154660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:32,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:32,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:43:32,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320487474] [2021-11-20 23:43:32,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:32,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:43:32,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:32,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:43:32,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:43:32,954 INFO L87 Difference]: Start difference. First operand 2976 states and 6875 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:39,437 INFO L93 Difference]: Finished difference Result 4493 states and 10259 transitions. [2021-11-20 23:43:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 23:43:39,437 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 23:43:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:39,442 INFO L225 Difference]: With dead ends: 4493 [2021-11-20 23:43:39,442 INFO L226 Difference]: Without dead ends: 4493 [2021-11-20 23:43:39,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=361, Invalid=1199, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:43:39,443 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 601 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 4465 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 4496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:39,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 34 Invalid, 4496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4465 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 23:43:39,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2021-11-20 23:43:39,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 2910. [2021-11-20 23:43:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2900 states have (on average 2.31551724137931) internal successors, (6715), 2909 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 6715 transitions. [2021-11-20 23:43:39,482 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 6715 transitions. Word has length 20 [2021-11-20 23:43:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:39,483 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 6715 transitions. [2021-11-20 23:43:39,483 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 23:43:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 6715 transitions. [2021-11-20 23:43:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:43:39,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:39,484 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 23:43:39,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-20 23:43:39,484 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 23:43:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash -286405738, now seen corresponding path program 1 times [2021-11-20 23:43:39,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:39,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441882069] [2021-11-20 23:43:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:39,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:39,855 INFO 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 23:43:39,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:39,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441882069] [2021-11-20 23:43:39,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441882069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:39,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:39,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:43:39,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555658662] [2021-11-20 23:43:39,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:39,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:43:39,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:43:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:43:39,856 INFO L87 Difference]: Start difference. First operand 2910 states and 6715 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:41,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:41,604 INFO L93 Difference]: Finished difference Result 3566 states and 8143 transitions. [2021-11-20 23:43:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:43:41,605 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 23:43:41,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:41,609 INFO L225 Difference]: With dead ends: 3566 [2021-11-20 23:43:41,609 INFO L226 Difference]: Without dead ends: 3566 [2021-11-20 23:43:41,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:43:41,609 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 233 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:41,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 17 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:43:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2021-11-20 23:43:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 2948. [2021-11-20 23:43:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2938 states have (on average 2.3185840707964602) internal successors, (6812), 2947 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 6812 transitions. [2021-11-20 23:43:41,646 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 6812 transitions. Word has length 21 [2021-11-20 23:43:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:41,646 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 6812 transitions. [2021-11-20 23:43:41,646 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 23:43:41,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 6812 transitions. [2021-11-20 23:43:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:43:41,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:41,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:41,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-20 23:43:41,648 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 23:43:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash 698122332, now seen corresponding path program 2 times [2021-11-20 23:43:41,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:41,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130974855] [2021-11-20 23:43:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:41,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:43,224 INFO 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 23:43:43,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130974855] [2021-11-20 23:43:43,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130974855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:43,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:43,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:43:43,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112916130] [2021-11-20 23:43:43,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:43,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:43:43,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:43,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:43:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:43:43,226 INFO L87 Difference]: Start difference. First operand 2948 states and 6812 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:53,756 INFO L93 Difference]: Finished difference Result 5672 states and 12847 transitions. [2021-11-20 23:43:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 23:43:53,757 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:43:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:53,763 INFO L225 Difference]: With dead ends: 5672 [2021-11-20 23:43:53,763 INFO L226 Difference]: Without dead ends: 5672 [2021-11-20 23:43:53,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=540, Invalid=2430, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 23:43:53,763 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 879 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 7266 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 7266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:53,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 35 Invalid, 7395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 7266 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-20 23:43:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-11-20 23:43:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 2999. [2021-11-20 23:43:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2989 states have (on average 2.3195048511207763) internal successors, (6933), 2998 states have internal predecessors, (6933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 6933 transitions. [2021-11-20 23:43:53,811 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 6933 transitions. Word has length 21 [2021-11-20 23:43:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:53,811 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 6933 transitions. [2021-11-20 23:43:53,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 6933 transitions. [2021-11-20 23:43:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:43:53,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:53,813 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 23:43:53,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-20 23:43:53,813 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 23:43:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1831465724, now seen corresponding path program 3 times [2021-11-20 23:43:53,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:53,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875684065] [2021-11-20 23:43:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:53,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:54,050 INFO 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 23:43:54,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:54,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875684065] [2021-11-20 23:43:54,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875684065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:54,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:54,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:43:54,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569456783] [2021-11-20 23:43:54,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:54,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:43:54,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:54,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:43:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:43:54,051 INFO L87 Difference]: Start difference. First operand 2999 states and 6933 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:55,533 INFO L93 Difference]: Finished difference Result 3888 states and 8852 transitions. [2021-11-20 23:43:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:43:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:43:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:55,539 INFO L225 Difference]: With dead ends: 3888 [2021-11-20 23:43:55,539 INFO L226 Difference]: Without dead ends: 3888 [2021-11-20 23:43:55,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:43:55,539 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 317 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:55,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 32 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:43:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-11-20 23:43:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3051. [2021-11-20 23:43:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 3041 states have (on average 2.319960539296284) internal successors, (7055), 3050 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 7055 transitions. [2021-11-20 23:43:55,579 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 7055 transitions. Word has length 21 [2021-11-20 23:43:55,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:55,579 INFO L470 AbstractCegarLoop]: Abstraction has 3051 states and 7055 transitions. [2021-11-20 23:43:55,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:43:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 7055 transitions. [2021-11-20 23:43:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:43:55,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:55,581 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 23:43:55,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-20 23:43:55,581 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 23:43:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1835242454, now seen corresponding path program 4 times [2021-11-20 23:43:55,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:55,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339581013] [2021-11-20 23:43:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:55,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:57,473 INFO 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 23:43:57,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:57,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339581013] [2021-11-20 23:43:57,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339581013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:57,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:57,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:43:57,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816338522] [2021-11-20 23:43:57,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:57,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:43:57,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:57,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:43:57,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:43:57,474 INFO L87 Difference]: Start difference. First operand 3051 states and 7055 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:04,290 INFO L93 Difference]: Finished difference Result 4824 states and 11056 transitions. [2021-11-20 23:44:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:44:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:44:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:04,297 INFO L225 Difference]: With dead ends: 4824 [2021-11-20 23:44:04,297 INFO L226 Difference]: Without dead ends: 4824 [2021-11-20 23:44:04,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=411, Invalid=1659, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:44:04,297 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 619 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 4284 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:04,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 35 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4284 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-20 23:44:04,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2021-11-20 23:44:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 3059. [2021-11-20 23:44:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 3049 states have (on average 2.321416857986225) internal successors, (7078), 3058 states have internal predecessors, (7078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 7078 transitions. [2021-11-20 23:44:04,342 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 7078 transitions. Word has length 21 [2021-11-20 23:44:04,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:04,343 INFO L470 AbstractCegarLoop]: Abstraction has 3059 states and 7078 transitions. [2021-11-20 23:44:04,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 7078 transitions. [2021-11-20 23:44:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:04,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:04,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:04,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-20 23:44:04,345 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:44:04,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:04,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1277758066, now seen corresponding path program 1 times [2021-11-20 23:44:04,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:04,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842460697] [2021-11-20 23:44:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:04,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:04,492 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 23:44:04,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:04,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842460697] [2021-11-20 23:44:04,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842460697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:04,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:04,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:44:04,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146679047] [2021-11-20 23:44:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:04,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:44:04,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:44:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:44:04,493 INFO L87 Difference]: Start difference. First operand 3059 states and 7078 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:06,649 INFO L93 Difference]: Finished difference Result 7149 states and 16110 transitions. [2021-11-20 23:44:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:44:06,649 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 23:44:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:06,659 INFO L225 Difference]: With dead ends: 7149 [2021-11-20 23:44:06,659 INFO L226 Difference]: Without dead ends: 7125 [2021-11-20 23:44:06,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2021-11-20 23:44:06,660 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 941 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:06,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 82 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:44:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7125 states. [2021-11-20 23:44:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7125 to 3165. [2021-11-20 23:44:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3155 states have (on average 2.3182250396196515) internal successors, (7314), 3164 states have internal predecessors, (7314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 7314 transitions. [2021-11-20 23:44:06,721 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 7314 transitions. Word has length 21 [2021-11-20 23:44:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:06,721 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 7314 transitions. [2021-11-20 23:44:06,721 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 23:44:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 7314 transitions. [2021-11-20 23:44:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:06,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:06,723 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 23:44:06,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-20 23:44:06,723 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 23:44:06,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:06,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1671461424, now seen corresponding path program 5 times [2021-11-20 23:44:06,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:06,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922382362] [2021-11-20 23:44:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:06,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:07,104 INFO 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 23:44:07,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:07,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922382362] [2021-11-20 23:44:07,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922382362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:07,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:07,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:44:07,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441521793] [2021-11-20 23:44:07,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:07,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:44:07,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:44:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:44:07,106 INFO L87 Difference]: Start difference. First operand 3165 states and 7314 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:09,095 INFO L93 Difference]: Finished difference Result 3793 states and 8660 transitions. [2021-11-20 23:44:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:44:09,096 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 23:44:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:09,101 INFO L225 Difference]: With dead ends: 3793 [2021-11-20 23:44:09,101 INFO L226 Difference]: Without dead ends: 3793 [2021-11-20 23:44:09,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:44:09,101 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 397 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:09,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 17 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:44:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2021-11-20 23:44:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3176. [2021-11-20 23:44:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 3166 states have (on average 2.316171825647505) internal successors, (7333), 3175 states have internal predecessors, (7333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 7333 transitions. [2021-11-20 23:44:09,143 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 7333 transitions. Word has length 21 [2021-11-20 23:44:09,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:09,143 INFO L470 AbstractCegarLoop]: Abstraction has 3176 states and 7333 transitions. [2021-11-20 23:44:09,143 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 23:44:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 7333 transitions. [2021-11-20 23:44:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:09,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:09,145 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 23:44:09,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-20 23:44:09,145 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 23:44:09,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash -686933354, now seen corresponding path program 6 times [2021-11-20 23:44:09,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:09,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541190013] [2021-11-20 23:44:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:09,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:10,124 INFO 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 23:44:10,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:10,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541190013] [2021-11-20 23:44:10,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541190013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:10,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:10,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:44:10,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557066940] [2021-11-20 23:44:10,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:10,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:44:10,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:10,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:44:10,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:44:10,125 INFO L87 Difference]: Start difference. First operand 3176 states and 7333 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:13,068 INFO L93 Difference]: Finished difference Result 4883 states and 11199 transitions. [2021-11-20 23:44:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 23:44:13,068 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:44:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:13,074 INFO L225 Difference]: With dead ends: 4883 [2021-11-20 23:44:13,074 INFO L226 Difference]: Without dead ends: 4883 [2021-11-20 23:44:13,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-11-20 23:44:13,075 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 636 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:13,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 35 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:44:13,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2021-11-20 23:44:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 3246. [2021-11-20 23:44:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3236 states have (on average 2.322929542645241) internal successors, (7517), 3245 states have internal predecessors, (7517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 7517 transitions. [2021-11-20 23:44:13,124 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 7517 transitions. Word has length 21 [2021-11-20 23:44:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:13,124 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 7517 transitions. [2021-11-20 23:44:13,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 7517 transitions. [2021-11-20 23:44:13,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:13,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:13,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:13,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-20 23:44:13,126 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 23:44:13,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:13,126 INFO L85 PathProgramCache]: Analyzing trace with hash 446410038, now seen corresponding path program 7 times [2021-11-20 23:44:13,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:13,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554737407] [2021-11-20 23:44:13,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:13,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:44:13,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:13,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554737407] [2021-11-20 23:44:13,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554737407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:13,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:13,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:44:13,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465415217] [2021-11-20 23:44:13,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:13,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:44:13,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:13,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:44:13,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:44:13,383 INFO L87 Difference]: Start difference. First operand 3246 states and 7517 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:15,325 INFO L93 Difference]: Finished difference Result 4038 states and 9225 transitions. [2021-11-20 23:44:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:44:15,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:44:15,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:15,330 INFO L225 Difference]: With dead ends: 4038 [2021-11-20 23:44:15,330 INFO L226 Difference]: Without dead ends: 4038 [2021-11-20 23:44:15,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:44:15,331 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 315 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:15,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 32 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:44:15,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-11-20 23:44:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 3246. [2021-11-20 23:44:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3236 states have (on average 2.323547589616811) internal successors, (7519), 3245 states have internal predecessors, (7519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 7519 transitions. [2021-11-20 23:44:15,375 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 7519 transitions. Word has length 21 [2021-11-20 23:44:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:15,376 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 7519 transitions. [2021-11-20 23:44:15,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 7519 transitions. [2021-11-20 23:44:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:15,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:15,378 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 23:44:15,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-20 23:44:15,379 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 23:44:15,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:15,379 INFO L85 PathProgramCache]: Analyzing trace with hash 450186768, now seen corresponding path program 8 times [2021-11-20 23:44:15,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:15,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736765620] [2021-11-20 23:44:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:15,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:17,489 INFO 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 23:44:17,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:17,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736765620] [2021-11-20 23:44:17,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736765620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:17,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:17,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:44:17,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107181510] [2021-11-20 23:44:17,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:17,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:44:17,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:44:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:44:17,490 INFO L87 Difference]: Start difference. First operand 3246 states and 7519 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:24,747 INFO L93 Difference]: Finished difference Result 5084 states and 11653 transitions. [2021-11-20 23:44:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:44:24,748 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:44:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:24,753 INFO L225 Difference]: With dead ends: 5084 [2021-11-20 23:44:24,754 INFO L226 Difference]: Without dead ends: 5084 [2021-11-20 23:44:24,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:44:24,754 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 596 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:24,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 35 Invalid, 5355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 5284 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 23:44:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2021-11-20 23:44:24,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 3249. [2021-11-20 23:44:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3239 states have (on average 2.3244828650818152) internal successors, (7529), 3248 states have internal predecessors, (7529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 7529 transitions. [2021-11-20 23:44:24,801 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 7529 transitions. Word has length 21 [2021-11-20 23:44:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:24,802 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 7529 transitions. [2021-11-20 23:44:24,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 7529 transitions. [2021-11-20 23:44:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:24,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:24,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:24,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-20 23:44:24,804 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 23:44:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash -994720252, now seen corresponding path program 9 times [2021-11-20 23:44:24,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:24,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458621379] [2021-11-20 23:44:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:24,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:27,637 INFO 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 23:44:27,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:27,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458621379] [2021-11-20 23:44:27,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458621379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:27,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:27,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:44:27,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91319091] [2021-11-20 23:44:27,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:27,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:44:27,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:27,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:44:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:44:27,639 INFO L87 Difference]: Start difference. First operand 3249 states and 7529 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:35,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:35,771 INFO L93 Difference]: Finished difference Result 5398 states and 12363 transitions. [2021-11-20 23:44:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 23:44:35,772 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:44:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:35,778 INFO L225 Difference]: With dead ends: 5398 [2021-11-20 23:44:35,778 INFO L226 Difference]: Without dead ends: 5398 [2021-11-20 23:44:35,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 23:44:35,778 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1194 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:35,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 34 Invalid, 5599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-20 23:44:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2021-11-20 23:44:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 3287. [2021-11-20 23:44:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3277 states have (on average 2.324382056759231) internal successors, (7617), 3286 states have internal predecessors, (7617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 7617 transitions. [2021-11-20 23:44:35,828 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 7617 transitions. Word has length 21 [2021-11-20 23:44:35,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:35,828 INFO L470 AbstractCegarLoop]: Abstraction has 3287 states and 7617 transitions. [2021-11-20 23:44:35,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 7617 transitions. [2021-11-20 23:44:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:35,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:35,830 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 23:44:35,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-20 23:44:35,830 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 23:44:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:35,830 INFO L85 PathProgramCache]: Analyzing trace with hash -10192182, now seen corresponding path program 10 times [2021-11-20 23:44:35,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:35,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775361836] [2021-11-20 23:44:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:35,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:37,046 INFO 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 23:44:37,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:37,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775361836] [2021-11-20 23:44:37,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775361836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:37,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:37,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:44:37,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482188567] [2021-11-20 23:44:37,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:37,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:44:37,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:44:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:44:37,048 INFO L87 Difference]: Start difference. First operand 3287 states and 7617 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:45,754 INFO L93 Difference]: Finished difference Result 5739 states and 13131 transitions. [2021-11-20 23:44:45,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:44:45,754 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:44:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:45,761 INFO L225 Difference]: With dead ends: 5739 [2021-11-20 23:44:45,761 INFO L226 Difference]: Without dead ends: 5739 [2021-11-20 23:44:45,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=547, Invalid=2105, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 23:44:45,762 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1349 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 5090 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 5090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:45,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 35 Invalid, 5192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 5090 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-20 23:44:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2021-11-20 23:44:45,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 3223. [2021-11-20 23:44:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3213 states have (on average 2.321817615935263) internal successors, (7460), 3222 states have internal predecessors, (7460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 7460 transitions. [2021-11-20 23:44:45,816 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 7460 transitions. Word has length 21 [2021-11-20 23:44:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:45,816 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 7460 transitions. [2021-11-20 23:44:45,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 7460 transitions. [2021-11-20 23:44:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:45,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:45,818 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 23:44:45,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-20 23:44:45,818 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:44:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1363865414, now seen corresponding path program 1 times [2021-11-20 23:44:45,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:45,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742929422] [2021-11-20 23:44:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:45,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:46,299 INFO 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 23:44:46,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:46,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742929422] [2021-11-20 23:44:46,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742929422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:46,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:46,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 23:44:46,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114832800] [2021-11-20 23:44:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:46,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:44:46,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:44:46,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:44:46,300 INFO L87 Difference]: Start difference. First operand 3223 states and 7460 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:48,878 INFO L93 Difference]: Finished difference Result 5140 states and 11603 transitions. [2021-11-20 23:44:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:44:48,879 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 23:44:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:48,885 INFO L225 Difference]: With dead ends: 5140 [2021-11-20 23:44:48,885 INFO L226 Difference]: Without dead ends: 5118 [2021-11-20 23:44:48,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-11-20 23:44:48,886 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 445 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:48,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 35 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:44:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2021-11-20 23:44:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 3219. [2021-11-20 23:44:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3209 states have (on average 2.320972265503272) internal successors, (7448), 3218 states have internal predecessors, (7448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 7448 transitions. [2021-11-20 23:44:48,962 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 7448 transitions. Word has length 21 [2021-11-20 23:44:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:48,962 INFO L470 AbstractCegarLoop]: Abstraction has 3219 states and 7448 transitions. [2021-11-20 23:44:48,962 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 23:44:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 7448 transitions. [2021-11-20 23:44:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:48,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:48,964 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 23:44:48,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-20 23:44:48,964 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 23:44:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash -329528118, now seen corresponding path program 11 times [2021-11-20 23:44:48,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:48,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971776449] [2021-11-20 23:44:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:48,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:49,303 INFO 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 23:44:49,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:49,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971776449] [2021-11-20 23:44:49,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971776449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:49,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:49,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:44:49,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532601638] [2021-11-20 23:44:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:49,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:44:49,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:44:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:44:49,305 INFO L87 Difference]: Start difference. First operand 3219 states and 7448 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:51,365 INFO L93 Difference]: Finished difference Result 3615 states and 8325 transitions. [2021-11-20 23:44:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:44:51,366 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 23:44:51,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:51,370 INFO L225 Difference]: With dead ends: 3615 [2021-11-20 23:44:51,370 INFO L226 Difference]: Without dead ends: 3615 [2021-11-20 23:44:51,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:44:51,371 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 243 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:51,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 17 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:44:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2021-11-20 23:44:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3247. [2021-11-20 23:44:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 3237 states have (on average 2.32159406858202) internal successors, (7515), 3246 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:44:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 7515 transitions. [2021-11-20 23:44:51,433 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 7515 transitions. Word has length 21 [2021-11-20 23:44:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:51,433 INFO L470 AbstractCegarLoop]: Abstraction has 3247 states and 7515 transitions. [2021-11-20 23:44:51,433 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 23:44:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 7515 transitions. [2021-11-20 23:44:51,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:44:51,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:51,436 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 23:44:51,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-20 23:44:51,436 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 23:44:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:51,437 INFO L85 PathProgramCache]: Analyzing trace with hash 654999952, now seen corresponding path program 12 times [2021-11-20 23:44:51,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:51,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746199264] [2021-11-20 23:44:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:51,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:53,017 INFO 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 23:44:53,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:53,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746199264] [2021-11-20 23:44:53,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746199264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:53,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:53,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:44:53,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550090090] [2021-11-20 23:44:53,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:53,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:44:53,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:53,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:44:53,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:44:53,019 INFO L87 Difference]: Start difference. First operand 3247 states and 7515 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:04,180 INFO L93 Difference]: Finished difference Result 5675 states and 12933 transitions. [2021-11-20 23:45:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 23:45:04,180 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:45:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:04,187 INFO L225 Difference]: With dead ends: 5675 [2021-11-20 23:45:04,187 INFO L226 Difference]: Without dead ends: 5675 [2021-11-20 23:45:04,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=554, Invalid=2638, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 23:45:04,188 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 827 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 8227 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 8227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:04,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 35 Invalid, 8326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 8227 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-20 23:45:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2021-11-20 23:45:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 3249. [2021-11-20 23:45:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3239 states have (on average 2.3223217042297004) internal successors, (7522), 3248 states have internal predecessors, (7522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 7522 transitions. [2021-11-20 23:45:04,239 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 7522 transitions. Word has length 21 [2021-11-20 23:45:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:04,240 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 7522 transitions. [2021-11-20 23:45:04,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 7522 transitions. [2021-11-20 23:45:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:04,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:04,241 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 23:45:04,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-20 23:45:04,241 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 23:45:04,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:04,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1788343344, now seen corresponding path program 13 times [2021-11-20 23:45:04,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:04,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999224313] [2021-11-20 23:45:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:04,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:04,426 INFO 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 23:45:04,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:04,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999224313] [2021-11-20 23:45:04,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999224313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:04,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:04,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:45:04,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257811876] [2021-11-20 23:45:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:04,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:45:04,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:04,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:45:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:45:04,427 INFO L87 Difference]: Start difference. First operand 3249 states and 7522 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:05,912 INFO L93 Difference]: Finished difference Result 4010 states and 9179 transitions. [2021-11-20 23:45:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:45:05,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:45:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:05,917 INFO L225 Difference]: With dead ends: 4010 [2021-11-20 23:45:05,917 INFO L226 Difference]: Without dead ends: 4010 [2021-11-20 23:45:05,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:45:05,918 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 249 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:05,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 32 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:45:05,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-11-20 23:45:05,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3269. [2021-11-20 23:45:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 3259 states have (on average 2.3227984044185335) internal successors, (7570), 3268 states have internal predecessors, (7570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 7570 transitions. [2021-11-20 23:45:05,961 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 7570 transitions. Word has length 21 [2021-11-20 23:45:05,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:05,961 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 7570 transitions. [2021-11-20 23:45:05,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 7570 transitions. [2021-11-20 23:45:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:05,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:05,963 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 23:45:05,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-20 23:45:05,963 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 23:45:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1792120074, now seen corresponding path program 14 times [2021-11-20 23:45:05,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:05,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133537868] [2021-11-20 23:45:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:05,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:07,878 INFO 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 23:45:07,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:07,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133537868] [2021-11-20 23:45:07,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133537868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:07,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:07,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:45:07,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182981460] [2021-11-20 23:45:07,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:07,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:45:07,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:45:07,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:45:07,880 INFO L87 Difference]: Start difference. First operand 3269 states and 7570 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:15,843 INFO L93 Difference]: Finished difference Result 5019 states and 11531 transitions. [2021-11-20 23:45:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:45:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:45:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:15,849 INFO L225 Difference]: With dead ends: 5019 [2021-11-20 23:45:15,849 INFO L226 Difference]: Without dead ends: 5019 [2021-11-20 23:45:15,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=457, Invalid=1993, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 23:45:15,850 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 619 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 5128 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 5128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:15,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 35 Invalid, 5214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 5128 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 23:45:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5019 states. [2021-11-20 23:45:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5019 to 3277. [2021-11-20 23:45:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3267 states have (on average 2.3241505968778697) internal successors, (7593), 3276 states have internal predecessors, (7593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 7593 transitions. [2021-11-20 23:45:15,897 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 7593 transitions. Word has length 21 [2021-11-20 23:45:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:15,898 INFO L470 AbstractCegarLoop]: Abstraction has 3277 states and 7593 transitions. [2021-11-20 23:45:15,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 7593 transitions. [2021-11-20 23:45:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:15,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:15,899 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 23:45:15,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-20 23:45:15,899 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 23:45:15,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1714583804, now seen corresponding path program 15 times [2021-11-20 23:45:15,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:15,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316855815] [2021-11-20 23:45:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:15,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:16,204 INFO 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 23:45:16,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:16,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316855815] [2021-11-20 23:45:16,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316855815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:16,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:16,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:45:16,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165169640] [2021-11-20 23:45:16,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:16,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:45:16,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:45:16,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:45:16,206 INFO L87 Difference]: Start difference. First operand 3277 states and 7593 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:18,752 INFO L93 Difference]: Finished difference Result 3802 states and 8733 transitions. [2021-11-20 23:45:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:45:18,752 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 23:45:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:18,757 INFO L225 Difference]: With dead ends: 3802 [2021-11-20 23:45:18,757 INFO L226 Difference]: Without dead ends: 3802 [2021-11-20 23:45:18,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:45:18,757 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 303 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:18,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 17 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 23:45:18,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2021-11-20 23:45:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3304. [2021-11-20 23:45:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 3294 states have (on average 2.3221007893139043) internal successors, (7649), 3303 states have internal predecessors, (7649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 7649 transitions. [2021-11-20 23:45:18,799 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 7649 transitions. Word has length 21 [2021-11-20 23:45:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:18,799 INFO L470 AbstractCegarLoop]: Abstraction has 3304 states and 7649 transitions. [2021-11-20 23:45:18,800 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 23:45:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 7649 transitions. [2021-11-20 23:45:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:18,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:18,801 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, 1] [2021-11-20 23:45:18,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-20 23:45:18,801 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 23:45:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:18,802 INFO L85 PathProgramCache]: Analyzing trace with hash -730055734, now seen corresponding path program 16 times [2021-11-20 23:45:18,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:18,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477648892] [2021-11-20 23:45:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:18,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:19,812 INFO 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 23:45:19,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:19,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477648892] [2021-11-20 23:45:19,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477648892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:19,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:19,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:45:19,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256826561] [2021-11-20 23:45:19,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:19,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:45:19,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:19,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:45:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:45:19,814 INFO L87 Difference]: Start difference. First operand 3304 states and 7649 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:23,525 INFO L93 Difference]: Finished difference Result 4988 states and 11469 transitions. [2021-11-20 23:45:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 23:45:23,526 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:45:23,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:23,531 INFO L225 Difference]: With dead ends: 4988 [2021-11-20 23:45:23,532 INFO L226 Difference]: Without dead ends: 4988 [2021-11-20 23:45:23,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=303, Invalid=957, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 23:45:23,532 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 647 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 3257 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:23,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 35 Invalid, 3321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3257 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 23:45:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-11-20 23:45:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 3323. [2021-11-20 23:45:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 3313 states have (on average 2.322668276486568) internal successors, (7695), 3322 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 7695 transitions. [2021-11-20 23:45:23,582 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 7695 transitions. Word has length 21 [2021-11-20 23:45:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:23,583 INFO L470 AbstractCegarLoop]: Abstraction has 3323 states and 7695 transitions. [2021-11-20 23:45:23,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:23,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 7695 transitions. [2021-11-20 23:45:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:23,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:23,587 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 23:45:23,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-20 23:45:23,587 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:45:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:23,588 INFO L85 PathProgramCache]: Analyzing trace with hash 403287658, now seen corresponding path program 17 times [2021-11-20 23:45:23,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:23,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679273724] [2021-11-20 23:45:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:23,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:23,810 INFO 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 23:45:23,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:23,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679273724] [2021-11-20 23:45:23,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679273724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:23,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:23,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:45:23,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962199312] [2021-11-20 23:45:23,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:23,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:45:23,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:23,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:45:23,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:45:23,811 INFO L87 Difference]: Start difference. First operand 3323 states and 7695 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:25,583 INFO L93 Difference]: Finished difference Result 4130 states and 9442 transitions. [2021-11-20 23:45:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:45:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:45:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:25,587 INFO L225 Difference]: With dead ends: 4130 [2021-11-20 23:45:25,587 INFO L226 Difference]: Without dead ends: 4130 [2021-11-20 23:45:25,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-20 23:45:25,590 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 307 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:25,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 32 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:45:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-11-20 23:45:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3316. [2021-11-20 23:45:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 3306 states have (on average 2.323049001814882) internal successors, (7680), 3315 states have internal predecessors, (7680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 7680 transitions. [2021-11-20 23:45:25,657 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 7680 transitions. Word has length 21 [2021-11-20 23:45:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:25,657 INFO L470 AbstractCegarLoop]: Abstraction has 3316 states and 7680 transitions. [2021-11-20 23:45:25,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 7680 transitions. [2021-11-20 23:45:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:25,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:25,660 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 23:45:25,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-20 23:45:25,660 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 23:45:25,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash 407064388, now seen corresponding path program 18 times [2021-11-20 23:45:25,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:25,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600934081] [2021-11-20 23:45:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:25,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:45:27,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:27,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600934081] [2021-11-20 23:45:27,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600934081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:27,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:27,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:45:27,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994439099] [2021-11-20 23:45:27,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:27,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:45:27,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:27,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:45:27,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:45:27,498 INFO L87 Difference]: Start difference. First operand 3316 states and 7680 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:35,153 INFO L93 Difference]: Finished difference Result 5101 states and 11719 transitions. [2021-11-20 23:45:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:45:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:45:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:35,160 INFO L225 Difference]: With dead ends: 5101 [2021-11-20 23:45:35,160 INFO L226 Difference]: Without dead ends: 5101 [2021-11-20 23:45:35,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=472, Invalid=1978, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 23:45:35,161 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 690 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 5242 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 5242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:35,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 35 Invalid, 5323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 5242 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 23:45:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-11-20 23:45:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3319. [2021-11-20 23:45:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 3309 states have (on average 2.3239649440918706) internal successors, (7690), 3318 states have internal predecessors, (7690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 7690 transitions. [2021-11-20 23:45:35,213 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 7690 transitions. Word has length 21 [2021-11-20 23:45:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:35,213 INFO L470 AbstractCegarLoop]: Abstraction has 3319 states and 7690 transitions. [2021-11-20 23:45:35,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:35,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 7690 transitions. [2021-11-20 23:45:35,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:35,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:35,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:45:35,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-20 23:45:35,215 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 23:45:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1037842632, now seen corresponding path program 19 times [2021-11-20 23:45:35,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:35,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55460397] [2021-11-20 23:45:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:35,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:38,121 INFO 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 23:45:38,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:38,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55460397] [2021-11-20 23:45:38,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55460397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:38,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:38,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:45:38,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074920077] [2021-11-20 23:45:38,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:38,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:45:38,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:38,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:45:38,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:45:38,123 INFO L87 Difference]: Start difference. First operand 3319 states and 7690 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:46,765 INFO L93 Difference]: Finished difference Result 5337 states and 12259 transitions. [2021-11-20 23:45:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 23:45:46,766 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:45:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:46,772 INFO L225 Difference]: With dead ends: 5337 [2021-11-20 23:45:46,772 INFO L226 Difference]: Without dead ends: 5337 [2021-11-20 23:45:46,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=428, Invalid=2022, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 23:45:46,772 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1124 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 5439 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 5439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:46,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 34 Invalid, 5553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 5439 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 23:45:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2021-11-20 23:45:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 3364. [2021-11-20 23:45:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 3354 states have (on average 2.323494335122242) internal successors, (7793), 3363 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 7793 transitions. [2021-11-20 23:45:46,824 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 7793 transitions. Word has length 21 [2021-11-20 23:45:46,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:46,824 INFO L470 AbstractCegarLoop]: Abstraction has 3364 states and 7793 transitions. [2021-11-20 23:45:46,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 7793 transitions. [2021-11-20 23:45:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:46,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:46,826 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 23:45:46,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-20 23:45:46,826 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 23:45:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash -53314562, now seen corresponding path program 20 times [2021-11-20 23:45:46,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:46,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283316857] [2021-11-20 23:45:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:46,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:47,972 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 23:45:47,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:47,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283316857] [2021-11-20 23:45:47,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283316857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:47,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:47,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:45:47,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209717695] [2021-11-20 23:45:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:47,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:45:47,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:45:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:45:47,973 INFO L87 Difference]: Start difference. First operand 3364 states and 7793 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:59,241 INFO L93 Difference]: Finished difference Result 5859 states and 13441 transitions. [2021-11-20 23:45:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 23:45:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:45:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:59,249 INFO L225 Difference]: With dead ends: 5859 [2021-11-20 23:45:59,249 INFO L226 Difference]: Without dead ends: 5859 [2021-11-20 23:45:59,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=591, Invalid=2489, Unknown=0, NotChecked=0, Total=3080 [2021-11-20 23:45:59,249 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 986 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 8292 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 8292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:59,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 35 Invalid, 8372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 8292 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-20 23:45:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5859 states. [2021-11-20 23:45:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5859 to 3266. [2021-11-20 23:45:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3256 states have (on average 2.3215601965601964) internal successors, (7559), 3265 states have internal predecessors, (7559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 7559 transitions. [2021-11-20 23:45:59,324 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 7559 transitions. Word has length 21 [2021-11-20 23:45:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:59,325 INFO L470 AbstractCegarLoop]: Abstraction has 3266 states and 7559 transitions. [2021-11-20 23:45:59,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:45:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 7559 transitions. [2021-11-20 23:45:59,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:45:59,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:59,326 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 23:45:59,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-20 23:45:59,326 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:45:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1556675290, now seen corresponding path program 2 times [2021-11-20 23:45:59,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:45:59,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387104914] [2021-11-20 23:45:59,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:45:59,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:45:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:45:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:45:59,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:45:59,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387104914] [2021-11-20 23:45:59,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387104914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:59,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:59,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:45:59,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28723790] [2021-11-20 23:45:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:59,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:45:59,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:45:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:45:59,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:45:59,445 INFO L87 Difference]: Start difference. First operand 3266 states and 7559 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:02,633 INFO L93 Difference]: Finished difference Result 12458 states and 28163 transitions. [2021-11-20 23:46:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 23:46:02,633 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 23:46:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:02,651 INFO L225 Difference]: With dead ends: 12458 [2021-11-20 23:46:02,651 INFO L226 Difference]: Without dead ends: 12419 [2021-11-20 23:46:02,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:46:02,652 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 934 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 3634 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 3687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:02,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 161 Invalid, 3687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3634 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:46:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2021-11-20 23:46:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 3274. [2021-11-20 23:46:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3264 states have (on average 2.3216911764705883) internal successors, (7578), 3273 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 7578 transitions. [2021-11-20 23:46:02,736 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 7578 transitions. Word has length 21 [2021-11-20 23:46:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:02,737 INFO L470 AbstractCegarLoop]: Abstraction has 3274 states and 7578 transitions. [2021-11-20 23:46:02,737 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 23:46:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 7578 transitions. [2021-11-20 23:46:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:46:02,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:02,738 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 23:46:02,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-20 23:46:02,739 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:46:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2054747582, now seen corresponding path program 3 times [2021-11-20 23:46:02,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:02,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370541706] [2021-11-20 23:46:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:02,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:02,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:02,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370541706] [2021-11-20 23:46:02,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370541706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:02,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:02,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:46:02,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962835156] [2021-11-20 23:46:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:02,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:46:02,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:46:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:46:02,864 INFO L87 Difference]: Start difference. First operand 3274 states and 7578 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:05,580 INFO L93 Difference]: Finished difference Result 9999 states and 22656 transitions. [2021-11-20 23:46:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 23:46:05,580 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 23:46:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:05,594 INFO L225 Difference]: With dead ends: 9999 [2021-11-20 23:46:05,594 INFO L226 Difference]: Without dead ends: 9960 [2021-11-20 23:46:05,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 23:46:05,594 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 801 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:05,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 133 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:46:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2021-11-20 23:46:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 3214. [2021-11-20 23:46:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3204 states have (on average 2.3220973782771535) internal successors, (7440), 3213 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 7440 transitions. [2021-11-20 23:46:05,670 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 7440 transitions. Word has length 21 [2021-11-20 23:46:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:05,670 INFO L470 AbstractCegarLoop]: Abstraction has 3214 states and 7440 transitions. [2021-11-20 23:46:05,671 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 23:46:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 7440 transitions. [2021-11-20 23:46:05,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:46:05,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:05,672 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 23:46:05,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-20 23:46:05,672 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 23:46:05,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash 903936930, now seen corresponding path program 21 times [2021-11-20 23:46:05,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:05,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123632210] [2021-11-20 23:46:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:05,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:06,186 INFO 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 23:46:06,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:06,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123632210] [2021-11-20 23:46:06,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123632210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:06,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:06,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 23:46:06,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003760110] [2021-11-20 23:46:06,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:06,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:46:06,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:46:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:46:06,187 INFO L87 Difference]: Start difference. First operand 3214 states and 7440 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:09,525 INFO L93 Difference]: Finished difference Result 4376 states and 9860 transitions. [2021-11-20 23:46:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 23:46:09,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:46:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:09,531 INFO L225 Difference]: With dead ends: 4376 [2021-11-20 23:46:09,531 INFO L226 Difference]: Without dead ends: 4375 [2021-11-20 23:46:09,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2021-11-20 23:46:09,532 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 735 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:09,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 45 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:46:09,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-11-20 23:46:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 3427. [2021-11-20 23:46:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 3409 states have (on average 2.3024347315928426) internal successors, (7849), 3426 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 7849 transitions. [2021-11-20 23:46:09,597 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 7849 transitions. Word has length 21 [2021-11-20 23:46:09,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:09,597 INFO L470 AbstractCegarLoop]: Abstraction has 3427 states and 7849 transitions. [2021-11-20 23:46:09,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 7849 transitions. [2021-11-20 23:46:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:46:09,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:09,599 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 23:46:09,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-20 23:46:09,599 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 23:46:09,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1888465000, now seen corresponding path program 22 times [2021-11-20 23:46:09,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:09,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575053738] [2021-11-20 23:46:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:09,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:10,973 INFO 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 23:46:10,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:10,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575053738] [2021-11-20 23:46:10,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575053738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:10,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:10,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:46:10,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201343272] [2021-11-20 23:46:10,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:10,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:46:10,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:10,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:46:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:46:10,976 INFO L87 Difference]: Start difference. First operand 3427 states and 7849 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:19,228 INFO L93 Difference]: Finished difference Result 5930 states and 13465 transitions. [2021-11-20 23:46:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 23:46:19,228 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:46:19,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:19,235 INFO L225 Difference]: With dead ends: 5930 [2021-11-20 23:46:19,235 INFO L226 Difference]: Without dead ends: 5930 [2021-11-20 23:46:19,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-11-20 23:46:19,236 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 932 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 5913 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 5913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:19,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 35 Invalid, 6014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 5913 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-20 23:46:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5930 states. [2021-11-20 23:46:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5930 to 3429. [2021-11-20 23:46:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3429 states, 3411 states have (on average 2.303136909997068) internal successors, (7856), 3428 states have internal predecessors, (7856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 7856 transitions. [2021-11-20 23:46:19,292 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 7856 transitions. Word has length 21 [2021-11-20 23:46:19,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:19,292 INFO L470 AbstractCegarLoop]: Abstraction has 3429 states and 7856 transitions. [2021-11-20 23:46:19,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:19,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 7856 transitions. [2021-11-20 23:46:19,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:46:19,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:19,294 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 23:46:19,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-20 23:46:19,294 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 23:46:19,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:19,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1273158904, now seen corresponding path program 23 times [2021-11-20 23:46:19,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:19,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325660286] [2021-11-20 23:46:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:19,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:19,507 INFO 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 23:46:19,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:19,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325660286] [2021-11-20 23:46:19,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325660286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:19,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:19,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:46:19,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016762705] [2021-11-20 23:46:19,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:19,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:46:19,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:46:19,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:46:19,508 INFO L87 Difference]: Start difference. First operand 3429 states and 7856 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:21,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:21,085 INFO L93 Difference]: Finished difference Result 4007 states and 9108 transitions. [2021-11-20 23:46:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:46:21,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:46:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:21,091 INFO L225 Difference]: With dead ends: 4007 [2021-11-20 23:46:21,091 INFO L226 Difference]: Without dead ends: 4007 [2021-11-20 23:46:21,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:46:21,091 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 251 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:21,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 32 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:46:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2021-11-20 23:46:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3436. [2021-11-20 23:46:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3418 states have (on average 2.302808660035108) internal successors, (7871), 3435 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 7871 transitions. [2021-11-20 23:46:21,137 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 7871 transitions. Word has length 21 [2021-11-20 23:46:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:21,137 INFO L470 AbstractCegarLoop]: Abstraction has 3436 states and 7871 transitions. [2021-11-20 23:46:21,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 7871 transitions. [2021-11-20 23:46:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:46:21,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:21,139 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 23:46:21,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-20 23:46:21,139 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:46:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1269382174, now seen corresponding path program 24 times [2021-11-20 23:46:21,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:21,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416979482] [2021-11-20 23:46:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:21,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:22,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:22,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416979482] [2021-11-20 23:46:22,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416979482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:22,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:22,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:46:22,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053354065] [2021-11-20 23:46:22,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:22,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:46:22,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:46:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:46:22,972 INFO L87 Difference]: Start difference. First operand 3436 states and 7871 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:32,743 INFO L93 Difference]: Finished difference Result 5458 states and 12428 transitions. [2021-11-20 23:46:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-20 23:46:32,744 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:46:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:32,751 INFO L225 Difference]: With dead ends: 5458 [2021-11-20 23:46:32,751 INFO L226 Difference]: Without dead ends: 5458 [2021-11-20 23:46:32,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=680, Invalid=2980, Unknown=0, NotChecked=0, Total=3660 [2021-11-20 23:46:32,751 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 739 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 6279 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 6279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:32,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 35 Invalid, 6392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 6279 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-20 23:46:32,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2021-11-20 23:46:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 3448. [2021-11-20 23:46:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3430 states have (on average 2.3043731778425656) internal successors, (7904), 3447 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 7904 transitions. [2021-11-20 23:46:32,823 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 7904 transitions. Word has length 21 [2021-11-20 23:46:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:32,823 INFO L470 AbstractCegarLoop]: Abstraction has 3448 states and 7904 transitions. [2021-11-20 23:46:32,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 7904 transitions. [2021-11-20 23:46:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:46:32,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:32,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:46:32,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-20 23:46:32,825 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 23:46:32,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1580678102, now seen corresponding path program 25 times [2021-11-20 23:46:32,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:32,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534434263] [2021-11-20 23:46:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:32,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:35,605 INFO 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 23:46:35,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:35,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534434263] [2021-11-20 23:46:35,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534434263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:35,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:35,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:46:35,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069908424] [2021-11-20 23:46:35,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:35,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:46:35,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:46:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:46:35,606 INFO L87 Difference]: Start difference. First operand 3448 states and 7904 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:47,632 INFO L93 Difference]: Finished difference Result 5401 states and 12257 transitions. [2021-11-20 23:46:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-20 23:46:47,632 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:46:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:47,639 INFO L225 Difference]: With dead ends: 5401 [2021-11-20 23:46:47,639 INFO L226 Difference]: Without dead ends: 5401 [2021-11-20 23:46:47,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=632, Invalid=2790, Unknown=0, NotChecked=0, Total=3422 [2021-11-20 23:46:47,639 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1121 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 7504 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 7504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:47,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 34 Invalid, 7605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 7504 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-20 23:46:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5401 states. [2021-11-20 23:46:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5401 to 3486. [2021-11-20 23:46:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3468 states have (on average 2.3044982698961936) internal successors, (7992), 3485 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 7992 transitions. [2021-11-20 23:46:47,711 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 7992 transitions. Word has length 21 [2021-11-20 23:46:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:47,712 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 7992 transitions. [2021-11-20 23:46:47,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 7992 transitions. [2021-11-20 23:46:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:46:47,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:47,713 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 23:46:47,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-20 23:46:47,714 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:46:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1729761124, now seen corresponding path program 26 times [2021-11-20 23:46:47,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:47,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038050407] [2021-11-20 23:46:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:47,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:48,811 INFO 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 23:46:48,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:48,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038050407] [2021-11-20 23:46:48,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038050407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:48,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:48,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:46:48,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139015578] [2021-11-20 23:46:48,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:48,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:46:48,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:48,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:46:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:46:48,812 INFO L87 Difference]: Start difference. First operand 3486 states and 7992 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:59,571 INFO L93 Difference]: Finished difference Result 5883 states and 13379 transitions. [2021-11-20 23:46:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 23:46:59,572 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:46:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:59,578 INFO L225 Difference]: With dead ends: 5883 [2021-11-20 23:46:59,578 INFO L226 Difference]: Without dead ends: 5883 [2021-11-20 23:46:59,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=594, Invalid=2598, Unknown=0, NotChecked=0, Total=3192 [2021-11-20 23:46:59,579 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1042 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 7487 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 7487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:59,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 35 Invalid, 7566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 7487 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-20 23:46:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2021-11-20 23:46:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 3427. [2021-11-20 23:46:59,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 3409 states have (on average 2.3024347315928426) internal successors, (7849), 3426 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 7849 transitions. [2021-11-20 23:46:59,633 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 7849 transitions. Word has length 21 [2021-11-20 23:46:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:59,633 INFO L470 AbstractCegarLoop]: Abstraction has 3427 states and 7849 transitions. [2021-11-20 23:46:59,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:46:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 7849 transitions. [2021-11-20 23:46:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:46:59,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:59,635 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 23:46:59,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-20 23:46:59,635 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:46:59,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:59,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2047475318, now seen corresponding path program 27 times [2021-11-20 23:46:59,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:59,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891132278] [2021-11-20 23:46:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:59,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:47:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:47:02,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:47:02,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891132278] [2021-11-20 23:47:02,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891132278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:47:02,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:47:02,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-20 23:47:02,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918601590] [2021-11-20 23:47:02,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:47:02,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:47:02,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:47:02,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:47:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:47:02,671 INFO L87 Difference]: Start difference. First operand 3427 states and 7849 transitions. Second operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:47:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:47:15,395 INFO L93 Difference]: Finished difference Result 6060 states and 13747 transitions. [2021-11-20 23:47:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 23:47:15,395 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:47:15,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:47:15,402 INFO L225 Difference]: With dead ends: 6060 [2021-11-20 23:47:15,402 INFO L226 Difference]: Without dead ends: 6060 [2021-11-20 23:47:15,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=600, Invalid=2822, Unknown=0, NotChecked=0, Total=3422 [2021-11-20 23:47:15,402 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1217 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 9104 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 9236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 9104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:47:15,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1217 Valid, 34 Invalid, 9236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 9104 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-20 23:47:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2021-11-20 23:47:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 3463. [2021-11-20 23:47:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3445 states have (on average 2.302177068214804) internal successors, (7931), 3462 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:47:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 7931 transitions. [2021-11-20 23:47:15,450 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 7931 transitions. Word has length 21 [2021-11-20 23:47:15,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:47:15,451 INFO L470 AbstractCegarLoop]: Abstraction has 3463 states and 7931 transitions. [2021-11-20 23:47:15,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:47:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 7931 transitions. [2021-11-20 23:47:15,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:47:15,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:47:15,452 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 23:47:15,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-20 23:47:15,453 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:47:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:47:15,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1062947248, now seen corresponding path program 28 times [2021-11-20 23:47:15,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:47:15,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377268988] [2021-11-20 23:47:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:47:15,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:47:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:47:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:47:16,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:47:16,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377268988] [2021-11-20 23:47:16,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377268988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:47:16,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:47:16,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-20 23:47:16,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372689263] [2021-11-20 23:47:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:47:16,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:47:16,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:47:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:47:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:47:16,580 INFO L87 Difference]: Start difference. First operand 3463 states and 7931 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:47:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:47:28,216 INFO L93 Difference]: Finished difference Result 6724 states and 15231 transitions. [2021-11-20 23:47:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 23:47:28,217 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 23:47:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:47:28,224 INFO L225 Difference]: With dead ends: 6724 [2021-11-20 23:47:28,224 INFO L226 Difference]: Without dead ends: 6724 [2021-11-20 23:47:28,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=657, Invalid=2765, Unknown=0, NotChecked=0, Total=3422 [2021-11-20 23:47:28,225 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1145 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 8289 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 8289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:47:28,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 35 Invalid, 8384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 8289 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-20 23:47:28,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6724 states. [2021-11-20 23:47:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6724 to 3463. [2021-11-20 23:47:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3445 states have (on average 2.302177068214804) internal successors, (7931), 3462 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:47:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 7931 transitions. [2021-11-20 23:47:28,276 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 7931 transitions. Word has length 21 [2021-11-20 23:47:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:47:28,276 INFO L470 AbstractCegarLoop]: Abstraction has 3463 states and 7931 transitions. [2021-11-20 23:47:28,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:47:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 7931 transitions. [2021-11-20 23:47:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:47:28,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:47:28,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:47:28,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-20 23:47:28,278 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-20 23:47:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:47:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1061985206, now seen corresponding path program 29 times [2021-11-20 23:47:28,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:47:28,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369240345] [2021-11-20 23:47:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:47:28,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:47:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat