./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/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 7dc718442bb91da0bdb0fa6a159b603baccf5b9195c06341082ea90462d0b755 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:57:32,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:57:32,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:57:32,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:57:32,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:57:32,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:57:32,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:57:32,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:57:32,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:57:32,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:57:32,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:57:32,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:57:32,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:57:32,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:57:32,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:57:32,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:57:32,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:57:32,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:57:32,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:57:32,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:57:32,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:57:32,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:57:32,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:57:32,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:57:32,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:57:32,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:57:32,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:57:32,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:57:32,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:57:32,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:57:32,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:57:32,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:57:32,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:57:32,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:57:32,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:57:32,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:57:32,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:57:32,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:57:32,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:57:32,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:57:32,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:57:32,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:57:32,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:57:32,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:57:32,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:57:32,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:57:32,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:57:32,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:57:32,436 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:57:32,437 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:57:32,437 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:57:32,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:57:32,437 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:57:32,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:57:32,438 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:57:32,438 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:57:32,438 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:57:32,438 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:57:32,439 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:57:32,439 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:57:32,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:57:32,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:57:32,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:57:32,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:57:32,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:57:32,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:57:32,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:57:32,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:57:32,442 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:57:32,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:57:32,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:57:32,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:57:32,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:57:32,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:57:32,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:57:32,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:57:32,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:57:32,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:57:32,444 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:57:32,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:57:32,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:57:32,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:57:32,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:57:32,445 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dc718442bb91da0bdb0fa6a159b603baccf5b9195c06341082ea90462d0b755 [2021-11-20 23:57:32,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:57:32,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:57:32,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:57:32,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:57:32,712 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:57:32,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-20 23:57:32,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/data/864288276/e11653ba62a7471bb4081e4d2e80105c/FLAGab137f7bf [2021-11-20 23:57:33,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:57:33,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-20 23:57:33,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/data/864288276/e11653ba62a7471bb4081e4d2e80105c/FLAGab137f7bf [2021-11-20 23:57:34,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/data/864288276/e11653ba62a7471bb4081e4d2e80105c [2021-11-20 23:57:34,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:57:34,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:57:34,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:57:34,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:57:34,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:57:34,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:57:34" (1/1) ... [2021-11-20 23:57:34,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c6b4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:34, skipping insertion in model container [2021-11-20 23:57:34,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:57:34" (1/1) ... [2021-11-20 23:57:34,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:57:34,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:57:35,050 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26861,26874] [2021-11-20 23:57:35,108 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33212,33225] [2021-11-20 23:57:35,218 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57844,57857] [2021-11-20 23:57:35,244 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65899,65912] [2021-11-20 23:57:35,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71726,71739] [2021-11-20 23:57:35,299 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82469,82482] [2021-11-20 23:57:35,325 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90414,90427] [2021-11-20 23:57:35,366 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97642,97655] [2021-11-20 23:57:35,492 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132349,132362] [2021-11-20 23:57:35,502 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[135477,135490] [2021-11-20 23:57:35,526 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[143490,143503] [2021-11-20 23:57:35,547 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[149294,149307] [2021-11-20 23:57:35,632 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[172040,172053] [2021-11-20 23:57:35,750 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199876,199889] [2021-11-20 23:57:35,815 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226429,226442] [2021-11-20 23:57:35,881 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[253730,253743] [2021-11-20 23:57:35,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[284837,284850] [2021-11-20 23:57:36,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:57:36,230 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:57:36,340 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26861,26874] [2021-11-20 23:57:36,357 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33212,33225] [2021-11-20 23:57:36,437 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57844,57857] [2021-11-20 23:57:36,455 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65899,65912] [2021-11-20 23:57:36,469 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71726,71739] [2021-11-20 23:57:36,494 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82469,82482] [2021-11-20 23:57:36,513 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90414,90427] [2021-11-20 23:57:36,529 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97642,97655] [2021-11-20 23:57:36,606 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132349,132362] [2021-11-20 23:57:36,614 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[135477,135490] [2021-11-20 23:57:36,632 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[143490,143503] [2021-11-20 23:57:36,646 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[149294,149307] [2021-11-20 23:57:36,694 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[172040,172053] [2021-11-20 23:57:36,753 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199876,199889] [2021-11-20 23:57:36,808 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226429,226442] [2021-11-20 23:57:36,869 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[253730,253743] [2021-11-20 23:57:36,931 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_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[284837,284850] [2021-11-20 23:57:37,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:57:37,247 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:57:37,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37 WrapperNode [2021-11-20 23:57:37,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:57:37,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:57:37,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:57:37,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:57:37,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:37,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:37,573 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16832 [2021-11-20 23:57:37,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:57:37,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:57:37,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:57:37,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:57:37,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:37,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:37,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:37,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:37,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:37,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:38,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:38,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:57:38,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:57:38,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:57:38,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:57:38,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (1/1) ... [2021-11-20 23:57:38,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:57:38,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:57:38,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:57:38,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b89d95-0e1d-4d1f-a8a5-6ac345eb7b3a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:57:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:57:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:57:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:57:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:57:38,702 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:57:38,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:57:45,185 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:57:46,846 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:57:46,847 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:57:46,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:46 BoogieIcfgContainer [2021-11-20 23:57:46,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:57:46,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:57:46,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:57:46,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:57:46,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:57:34" (1/3) ... [2021-11-20 23:57:46,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a51baf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:57:46, skipping insertion in model container [2021-11-20 23:57:46,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:37" (2/3) ... [2021-11-20 23:57:46,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a51baf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:57:46, skipping insertion in model container [2021-11-20 23:57:46,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:46" (3/3) ... [2021-11-20 23:57:46,862 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-20 23:57:46,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:57:46,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-20 23:57:46,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:57:46,936 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 23:57:46,936 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-20 23:57:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 23:57:47,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:57:47,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:57:47,053 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:57:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:57:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash 600254357, now seen corresponding path program 1 times [2021-11-20 23:57:47,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:57:47,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918395353] [2021-11-20 23:57:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:47,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:57:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:57:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:57:47,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:57:47,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918395353] [2021-11-20 23:57:47,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918395353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:57:47,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:57:47,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:57:47,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823106392] [2021-11-20 23:57:47,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:57:47,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:57:47,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:57:47,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:57:47,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:57:47,584 INFO L87 Difference]: Start difference. First operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:57:51,810 INFO L93 Difference]: Finished difference Result 6231 states and 11121 transitions. [2021-11-20 23:57:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:57:51,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-20 23:57:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:57:51,852 INFO L225 Difference]: With dead ends: 6231 [2021-11-20 23:57:51,852 INFO L226 Difference]: Without dead ends: 3945 [2021-11-20 23:57:51,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:57:51,869 INFO L933 BasicCegarLoop]: 2573 mSDtfsCounter, 18388 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18388 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 3673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:57:51,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18388 Valid, 3615 Invalid, 3673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [235 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-20 23:57:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2021-11-20 23:57:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3921. [2021-11-20 23:57:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3904 states have (on average 1.309938524590164) internal successors, (5114), 3920 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 5114 transitions. [2021-11-20 23:57:52,111 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 5114 transitions. Word has length 63 [2021-11-20 23:57:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:57:52,112 INFO L470 AbstractCegarLoop]: Abstraction has 3921 states and 5114 transitions. [2021-11-20 23:57:52,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:52,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 5114 transitions. [2021-11-20 23:57:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 23:57:52,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:57:52,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:57:52,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:57:52,124 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:57:52,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:57:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1279054806, now seen corresponding path program 1 times [2021-11-20 23:57:52,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:57:52,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219242989] [2021-11-20 23:57:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:52,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:57:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:57:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:57:52,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:57:52,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219242989] [2021-11-20 23:57:52,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219242989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:57:52,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:57:52,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:57:52,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917706601] [2021-11-20 23:57:52,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:57:52,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:57:52,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:57:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:57:52,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:57:52,374 INFO L87 Difference]: Start difference. First operand 3921 states and 5114 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:57:54,833 INFO L93 Difference]: Finished difference Result 7148 states and 9301 transitions. [2021-11-20 23:57:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:57:54,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-20 23:57:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:57:54,860 INFO L225 Difference]: With dead ends: 7148 [2021-11-20 23:57:54,860 INFO L226 Difference]: Without dead ends: 4344 [2021-11-20 23:57:54,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:57:54,870 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 10161 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10161 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:57:54,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10161 Valid, 1756 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:57:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2021-11-20 23:57:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4324. [2021-11-20 23:57:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4307 states have (on average 1.3134432319479916) internal successors, (5657), 4323 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 5657 transitions. [2021-11-20 23:57:55,077 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 5657 transitions. Word has length 64 [2021-11-20 23:57:55,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:57:55,078 INFO L470 AbstractCegarLoop]: Abstraction has 4324 states and 5657 transitions. [2021-11-20 23:57:55,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 5657 transitions. [2021-11-20 23:57:55,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 23:57:55,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:57:55,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:57:55,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:57:55,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:57:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:57:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2141976619, now seen corresponding path program 1 times [2021-11-20 23:57:55,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:57:55,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080428109] [2021-11-20 23:57:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:55,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:57:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:57:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:57:55,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:57:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080428109] [2021-11-20 23:57:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080428109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:57:55,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:57:55,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:57:55,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937033942] [2021-11-20 23:57:55,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:57:55,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:57:55,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:57:55,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:57:55,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:57:55,277 INFO L87 Difference]: Start difference. First operand 4324 states and 5657 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:57:57,671 INFO L93 Difference]: Finished difference Result 8674 states and 11325 transitions. [2021-11-20 23:57:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:57:57,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-20 23:57:57,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:57:57,703 INFO L225 Difference]: With dead ends: 8674 [2021-11-20 23:57:57,703 INFO L226 Difference]: Without dead ends: 5883 [2021-11-20 23:57:57,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:57:57,711 INFO L933 BasicCegarLoop]: 1243 mSDtfsCounter, 9638 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9638 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:57:57,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9638 Valid, 1727 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:57:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2021-11-20 23:57:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 5856. [2021-11-20 23:57:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 5839 states have (on average 1.3115259462236684) internal successors, (7658), 5855 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 7658 transitions. [2021-11-20 23:57:58,015 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 7658 transitions. Word has length 64 [2021-11-20 23:57:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:57:58,017 INFO L470 AbstractCegarLoop]: Abstraction has 5856 states and 7658 transitions. [2021-11-20 23:57:58,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:57:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 7658 transitions. [2021-11-20 23:57:58,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 23:57:58,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:57:58,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:57:58,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:57:58,029 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:57:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:57:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash 767039615, now seen corresponding path program 1 times [2021-11-20 23:57:58,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:57:58,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725543598] [2021-11-20 23:57:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:58,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:57:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:57:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:57:58,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:57:58,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725543598] [2021-11-20 23:57:58,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725543598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:57:58,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:57:58,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:57:58,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073133345] [2021-11-20 23:57:58,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:57:58,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:57:58,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:57:58,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:57:58,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:57:58,136 INFO L87 Difference]: Start difference. First operand 5856 states and 7658 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:00,001 INFO L93 Difference]: Finished difference Result 11170 states and 14672 transitions. [2021-11-20 23:58:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:58:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 23:58:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:00,042 INFO L225 Difference]: With dead ends: 11170 [2021-11-20 23:58:00,042 INFO L226 Difference]: Without dead ends: 7350 [2021-11-20 23:58:00,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:58:00,052 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 8101 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8101 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:00,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8101 Valid, 1483 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:58:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2021-11-20 23:58:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7315. [2021-11-20 23:58:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 7298 states have (on average 1.3187174568374898) internal successors, (9624), 7314 states have internal predecessors, (9624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 9624 transitions. [2021-11-20 23:58:00,574 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 9624 transitions. Word has length 65 [2021-11-20 23:58:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:00,575 INFO L470 AbstractCegarLoop]: Abstraction has 7315 states and 9624 transitions. [2021-11-20 23:58:00,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 9624 transitions. [2021-11-20 23:58:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 23:58:00,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:00,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:00,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:58:00,592 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1941175905, now seen corresponding path program 1 times [2021-11-20 23:58:00,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:00,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837543327] [2021-11-20 23:58:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:00,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:00,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:00,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837543327] [2021-11-20 23:58:00,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837543327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:00,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:00,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:58:00,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894955538] [2021-11-20 23:58:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:00,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:58:00,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:58:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:58:00,801 INFO L87 Difference]: Start difference. First operand 7315 states and 9624 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:05,287 INFO L93 Difference]: Finished difference Result 12557 states and 16727 transitions. [2021-11-20 23:58:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:58:05,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 23:58:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:05,345 INFO L225 Difference]: With dead ends: 12557 [2021-11-20 23:58:05,345 INFO L226 Difference]: Without dead ends: 11630 [2021-11-20 23:58:05,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:58:05,353 INFO L933 BasicCegarLoop]: 1213 mSDtfsCounter, 9803 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 6442 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9803 SdHoareTripleChecker+Valid, 5092 SdHoareTripleChecker+Invalid, 6828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 6442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:05,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9803 Valid, 5092 Invalid, 6828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 6442 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 23:58:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2021-11-20 23:58:05,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 7274. [2021-11-20 23:58:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7257 states have (on average 1.318451150613201) internal successors, (9568), 7273 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 9568 transitions. [2021-11-20 23:58:05,809 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 9568 transitions. Word has length 65 [2021-11-20 23:58:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:05,810 INFO L470 AbstractCegarLoop]: Abstraction has 7274 states and 9568 transitions. [2021-11-20 23:58:05,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 9568 transitions. [2021-11-20 23:58:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 23:58:05,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:05,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:05,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:58:05,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1194049603, now seen corresponding path program 1 times [2021-11-20 23:58:05,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:05,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623407468] [2021-11-20 23:58:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:05,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:05,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:05,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623407468] [2021-11-20 23:58:05,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623407468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:05,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:05,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:58:05,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924079752] [2021-11-20 23:58:05,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:05,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:58:05,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:05,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:58:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:58:05,954 INFO L87 Difference]: Start difference. First operand 7274 states and 9568 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:08,693 INFO L93 Difference]: Finished difference Result 10835 states and 14522 transitions. [2021-11-20 23:58:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:58:08,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 23:58:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:08,714 INFO L225 Difference]: With dead ends: 10835 [2021-11-20 23:58:08,714 INFO L226 Difference]: Without dead ends: 9818 [2021-11-20 23:58:08,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:58:08,720 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 5614 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5614 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 4287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:08,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5614 Valid, 3845 Invalid, 4287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:58:08,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2021-11-20 23:58:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 7147. [2021-11-20 23:58:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7130 states have (on average 1.3183730715287518) internal successors, (9400), 7146 states have internal predecessors, (9400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9400 transitions. [2021-11-20 23:58:09,188 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9400 transitions. Word has length 65 [2021-11-20 23:58:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:09,188 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 9400 transitions. [2021-11-20 23:58:09,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9400 transitions. [2021-11-20 23:58:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 23:58:09,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:09,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:09,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:58:09,198 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:09,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:09,198 INFO L85 PathProgramCache]: Analyzing trace with hash -780640952, now seen corresponding path program 1 times [2021-11-20 23:58:09,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:09,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582324087] [2021-11-20 23:58:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:09,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:09,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:09,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582324087] [2021-11-20 23:58:09,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582324087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:09,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:09,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:58:09,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55630801] [2021-11-20 23:58:09,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:09,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:58:09,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:09,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:58:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:58:09,365 INFO L87 Difference]: Start difference. First operand 7147 states and 9400 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:12,570 INFO L93 Difference]: Finished difference Result 9821 states and 12941 transitions. [2021-11-20 23:58:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:58:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-20 23:58:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:12,592 INFO L225 Difference]: With dead ends: 9821 [2021-11-20 23:58:12,592 INFO L226 Difference]: Without dead ends: 9813 [2021-11-20 23:58:12,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:58:12,596 INFO L933 BasicCegarLoop]: 1203 mSDtfsCounter, 8685 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8685 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:12,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8685 Valid, 4922 Invalid, 5888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 5605 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 23:58:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9813 states. [2021-11-20 23:58:13,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9813 to 7147. [2021-11-20 23:58:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7130 states have (on average 1.3182328190743338) internal successors, (9399), 7146 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9399 transitions. [2021-11-20 23:58:13,119 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9399 transitions. Word has length 66 [2021-11-20 23:58:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:13,119 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 9399 transitions. [2021-11-20 23:58:13,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9399 transitions. [2021-11-20 23:58:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 23:58:13,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:13,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:13,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:58:13,129 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:13,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1912274000, now seen corresponding path program 1 times [2021-11-20 23:58:13,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:13,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160345322] [2021-11-20 23:58:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:13,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:13,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:13,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160345322] [2021-11-20 23:58:13,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160345322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:13,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:13,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:58:13,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854640655] [2021-11-20 23:58:13,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:13,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:58:13,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:58:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:58:13,262 INFO L87 Difference]: Start difference. First operand 7147 states and 9399 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:16,256 INFO L93 Difference]: Finished difference Result 8315 states and 10934 transitions. [2021-11-20 23:58:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:58:16,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-20 23:58:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:16,272 INFO L225 Difference]: With dead ends: 8315 [2021-11-20 23:58:16,272 INFO L226 Difference]: Without dead ends: 8310 [2021-11-20 23:58:16,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:58:16,275 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 7016 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 4978 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7016 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:16,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7016 Valid, 4744 Invalid, 5124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 4978 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:58:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2021-11-20 23:58:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 7147. [2021-11-20 23:58:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7130 states have (on average 1.318092566619916) internal successors, (9398), 7146 states have internal predecessors, (9398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9398 transitions. [2021-11-20 23:58:16,771 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9398 transitions. Word has length 66 [2021-11-20 23:58:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:16,771 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 9398 transitions. [2021-11-20 23:58:16,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9398 transitions. [2021-11-20 23:58:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 23:58:16,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:16,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:16,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:58:16,780 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:16,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:16,781 INFO L85 PathProgramCache]: Analyzing trace with hash -143652767, now seen corresponding path program 1 times [2021-11-20 23:58:16,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:16,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847839377] [2021-11-20 23:58:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:16,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:17,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:17,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847839377] [2021-11-20 23:58:17,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847839377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:17,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:17,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:58:17,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897995339] [2021-11-20 23:58:17,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:17,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:58:17,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:17,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:58:17,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:58:17,116 INFO L87 Difference]: Start difference. First operand 7147 states and 9398 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:20,020 INFO L93 Difference]: Finished difference Result 13456 states and 18307 transitions. [2021-11-20 23:58:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:58:20,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-20 23:58:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:20,041 INFO L225 Difference]: With dead ends: 13456 [2021-11-20 23:58:20,041 INFO L226 Difference]: Without dead ends: 12526 [2021-11-20 23:58:20,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:58:20,047 INFO L933 BasicCegarLoop]: 2195 mSDtfsCounter, 11913 mSDsluCounter, 7204 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11913 SdHoareTripleChecker+Valid, 9338 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:20,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11913 Valid, 9338 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:58:20,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2021-11-20 23:58:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 7099. [2021-11-20 23:58:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7099 states, 7083 states have (on average 1.3180855569673866) internal successors, (9336), 7098 states have internal predecessors, (9336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 9336 transitions. [2021-11-20 23:58:20,568 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 9336 transitions. Word has length 66 [2021-11-20 23:58:20,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:20,568 INFO L470 AbstractCegarLoop]: Abstraction has 7099 states and 9336 transitions. [2021-11-20 23:58:20,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 9336 transitions. [2021-11-20 23:58:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 23:58:20,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:20,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:20,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:58:20,577 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:20,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1525924249, now seen corresponding path program 1 times [2021-11-20 23:58:20,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:20,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922419023] [2021-11-20 23:58:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:20,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:20,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:20,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922419023] [2021-11-20 23:58:20,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922419023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:20,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:20,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:58:20,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962128655] [2021-11-20 23:58:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:20,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:58:20,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:58:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:58:20,926 INFO L87 Difference]: Start difference. First operand 7099 states and 9336 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:23,852 INFO L93 Difference]: Finished difference Result 11310 states and 15291 transitions. [2021-11-20 23:58:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:58:23,852 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-20 23:58:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:23,869 INFO L225 Difference]: With dead ends: 11310 [2021-11-20 23:58:23,870 INFO L226 Difference]: Without dead ends: 11306 [2021-11-20 23:58:23,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:58:23,875 INFO L933 BasicCegarLoop]: 2315 mSDtfsCounter, 8561 mSDsluCounter, 11113 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8561 SdHoareTripleChecker+Valid, 13254 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:23,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8561 Valid, 13254 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:58:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11306 states. [2021-11-20 23:58:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11306 to 7095. [2021-11-20 23:58:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7080 states have (on average 1.3180790960451978) internal successors, (9332), 7094 states have internal predecessors, (9332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:24,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 9332 transitions. [2021-11-20 23:58:24,544 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 9332 transitions. Word has length 66 [2021-11-20 23:58:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:24,545 INFO L470 AbstractCegarLoop]: Abstraction has 7095 states and 9332 transitions. [2021-11-20 23:58:24,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:24,545 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 9332 transitions. [2021-11-20 23:58:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:58:24,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:24,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:24,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:58:24,554 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:24,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:24,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2095330879, now seen corresponding path program 1 times [2021-11-20 23:58:24,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:24,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077790844] [2021-11-20 23:58:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:24,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:24,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:24,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077790844] [2021-11-20 23:58:24,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077790844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:24,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:24,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:58:24,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291411617] [2021-11-20 23:58:24,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:24,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:58:24,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:58:24,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:58:24,798 INFO L87 Difference]: Start difference. First operand 7095 states and 9332 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:27,939 INFO L93 Difference]: Finished difference Result 13973 states and 19032 transitions. [2021-11-20 23:58:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 23:58:27,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-20 23:58:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:27,956 INFO L225 Difference]: With dead ends: 13973 [2021-11-20 23:58:27,956 INFO L226 Difference]: Without dead ends: 12990 [2021-11-20 23:58:27,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:58:27,960 INFO L933 BasicCegarLoop]: 2195 mSDtfsCounter, 11905 mSDsluCounter, 8506 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11905 SdHoareTripleChecker+Valid, 10604 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:27,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11905 Valid, 10604 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:58:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2021-11-20 23:58:28,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 7063. [2021-11-20 23:58:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7048 states have (on average 1.3185300794551646) internal successors, (9293), 7062 states have internal predecessors, (9293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9293 transitions. [2021-11-20 23:58:28,572 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9293 transitions. Word has length 67 [2021-11-20 23:58:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:28,572 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9293 transitions. [2021-11-20 23:58:28,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9293 transitions. [2021-11-20 23:58:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:58:28,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:28,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:28,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:58:28,581 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:28,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash 920345528, now seen corresponding path program 1 times [2021-11-20 23:58:28,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:28,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061594942] [2021-11-20 23:58:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:28,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:28,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061594942] [2021-11-20 23:58:28,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061594942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:28,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:28,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:58:28,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366156719] [2021-11-20 23:58:28,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:28,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:58:28,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:58:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:58:28,698 INFO L87 Difference]: Start difference. First operand 7063 states and 9293 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:32,105 INFO L93 Difference]: Finished difference Result 10873 states and 14580 transitions. [2021-11-20 23:58:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:58:32,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-20 23:58:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:32,115 INFO L225 Difference]: With dead ends: 10873 [2021-11-20 23:58:32,115 INFO L226 Difference]: Without dead ends: 9712 [2021-11-20 23:58:32,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:58:32,121 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 8677 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8677 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 4082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:32,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8677 Valid, 3606 Invalid, 4082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:58:32,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-11-20 23:58:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 7063. [2021-11-20 23:58:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7048 states have (on average 1.3183881952326901) internal successors, (9292), 7062 states have internal predecessors, (9292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9292 transitions. [2021-11-20 23:58:32,952 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9292 transitions. Word has length 67 [2021-11-20 23:58:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:32,952 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9292 transitions. [2021-11-20 23:58:32,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9292 transitions. [2021-11-20 23:58:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:58:32,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:32,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:32,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:58:32,963 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1407222430, now seen corresponding path program 1 times [2021-11-20 23:58:32,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:32,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147468320] [2021-11-20 23:58:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:32,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:33,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:33,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147468320] [2021-11-20 23:58:33,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147468320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:33,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:33,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:58:33,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914435803] [2021-11-20 23:58:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:33,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:58:33,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:58:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:58:33,105 INFO L87 Difference]: Start difference. First operand 7063 states and 9292 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:37,691 INFO L93 Difference]: Finished difference Result 12012 states and 16103 transitions. [2021-11-20 23:58:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:58:37,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-20 23:58:37,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:37,701 INFO L225 Difference]: With dead ends: 12012 [2021-11-20 23:58:37,701 INFO L226 Difference]: Without dead ends: 11115 [2021-11-20 23:58:37,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:58:37,705 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 7113 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7113 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 6905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:37,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7113 Valid, 5926 Invalid, 6905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 6697 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 23:58:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11115 states. [2021-11-20 23:58:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11115 to 7063. [2021-11-20 23:58:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7048 states have (on average 1.3182463110102156) internal successors, (9291), 7062 states have internal predecessors, (9291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9291 transitions. [2021-11-20 23:58:38,381 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9291 transitions. Word has length 67 [2021-11-20 23:58:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:38,381 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9291 transitions. [2021-11-20 23:58:38,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9291 transitions. [2021-11-20 23:58:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:58:38,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:38,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:38,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:58:38,387 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash -805185725, now seen corresponding path program 1 times [2021-11-20 23:58:38,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:38,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231635225] [2021-11-20 23:58:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:38,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:38,498 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 23:58:38,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:38,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231635225] [2021-11-20 23:58:38,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231635225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:38,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:38,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:58:38,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258340608] [2021-11-20 23:58:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:38,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:58:38,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:58:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:58:38,501 INFO L87 Difference]: Start difference. First operand 7063 states and 9291 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:43,130 INFO L93 Difference]: Finished difference Result 12055 states and 16076 transitions. [2021-11-20 23:58:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 23:58:43,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-20 23:58:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:43,141 INFO L225 Difference]: With dead ends: 12055 [2021-11-20 23:58:43,141 INFO L226 Difference]: Without dead ends: 11116 [2021-11-20 23:58:43,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:58:43,145 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 9055 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 6185 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9055 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 6185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:43,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9055 Valid, 4899 Invalid, 6547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 6185 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 23:58:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11116 states. [2021-11-20 23:58:43,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11116 to 7063. [2021-11-20 23:58:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7048 states have (on average 1.3181044267877413) internal successors, (9290), 7062 states have internal predecessors, (9290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9290 transitions. [2021-11-20 23:58:43,876 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9290 transitions. Word has length 67 [2021-11-20 23:58:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:43,877 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9290 transitions. [2021-11-20 23:58:43,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9290 transitions. [2021-11-20 23:58:43,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:58:43,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:43,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:43,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:58:43,883 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:43,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:43,883 INFO L85 PathProgramCache]: Analyzing trace with hash 164568382, now seen corresponding path program 1 times [2021-11-20 23:58:43,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:43,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229858631] [2021-11-20 23:58:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:43,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:44,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:44,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229858631] [2021-11-20 23:58:44,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229858631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:44,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:44,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:58:44,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535365278] [2021-11-20 23:58:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:44,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:58:44,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:58:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:58:44,150 INFO L87 Difference]: Start difference. First operand 7063 states and 9290 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:50,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:50,227 INFO L93 Difference]: Finished difference Result 17367 states and 23830 transitions. [2021-11-20 23:58:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 23:58:50,227 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-20 23:58:50,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:50,244 INFO L225 Difference]: With dead ends: 17367 [2021-11-20 23:58:50,244 INFO L226 Difference]: Without dead ends: 16321 [2021-11-20 23:58:50,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=264, Invalid=666, Unknown=0, NotChecked=0, Total=930 [2021-11-20 23:58:50,250 INFO L933 BasicCegarLoop]: 2671 mSDtfsCounter, 11108 mSDsluCounter, 13029 mSDsCounter, 0 mSdLazyCounter, 3755 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11108 SdHoareTripleChecker+Valid, 15541 SdHoareTripleChecker+Invalid, 4097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 3755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:50,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11108 Valid, 15541 Invalid, 4097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 3755 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:58:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16321 states. [2021-11-20 23:58:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16321 to 6899. [2021-11-20 23:58:51,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6899 states, 6885 states have (on average 1.3166303558460422) internal successors, (9065), 6898 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 9065 transitions. [2021-11-20 23:58:51,075 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 9065 transitions. Word has length 67 [2021-11-20 23:58:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:51,076 INFO L470 AbstractCegarLoop]: Abstraction has 6899 states and 9065 transitions. [2021-11-20 23:58:51,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 9065 transitions. [2021-11-20 23:58:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 23:58:51,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:51,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:51,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:58:51,082 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:51,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:51,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2055073312, now seen corresponding path program 1 times [2021-11-20 23:58:51,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:51,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724925342] [2021-11-20 23:58:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:51,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:51,137 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:51,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724925342] [2021-11-20 23:58:51,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724925342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:51,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:51,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:58:51,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012412814] [2021-11-20 23:58:51,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:51,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:58:51,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:51,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:58:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:58:51,139 INFO L87 Difference]: Start difference. First operand 6899 states and 9065 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:52,383 INFO L93 Difference]: Finished difference Result 9773 states and 12969 transitions. [2021-11-20 23:58:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:58:52,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-20 23:58:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:52,390 INFO L225 Difference]: With dead ends: 9773 [2021-11-20 23:58:52,390 INFO L226 Difference]: Without dead ends: 5890 [2021-11-20 23:58:52,396 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 23:58:52,397 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 1608 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:52,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 2126 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:58:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2021-11-20 23:58:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 5872. [2021-11-20 23:58:53,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5862 states have (on average 1.3213920163766633) internal successors, (7746), 5871 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 7746 transitions. [2021-11-20 23:58:53,197 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 7746 transitions. Word has length 67 [2021-11-20 23:58:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:53,198 INFO L470 AbstractCegarLoop]: Abstraction has 5872 states and 7746 transitions. [2021-11-20 23:58:53,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 7746 transitions. [2021-11-20 23:58:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 23:58:53,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:53,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:53,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 23:58:53,203 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:53,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:53,204 INFO L85 PathProgramCache]: Analyzing trace with hash -985199678, now seen corresponding path program 1 times [2021-11-20 23:58:53,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:53,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73900650] [2021-11-20 23:58:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:53,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:53,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:53,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73900650] [2021-11-20 23:58:53,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73900650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:53,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:53,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:58:53,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855910693] [2021-11-20 23:58:53,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:53,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:58:53,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:58:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:58:53,255 INFO L87 Difference]: Start difference. First operand 5872 states and 7746 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:54,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:54,409 INFO L93 Difference]: Finished difference Result 9132 states and 12158 transitions. [2021-11-20 23:58:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:58:54,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-20 23:58:54,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:54,415 INFO L225 Difference]: With dead ends: 9132 [2021-11-20 23:58:54,415 INFO L226 Difference]: Without dead ends: 5530 [2021-11-20 23:58:54,419 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 23:58:54,420 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 1270 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:54,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 1627 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:58:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-11-20 23:58:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5522. [2021-11-20 23:58:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 5515 states have (on average 1.3298277425203988) internal successors, (7334), 5521 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 7334 transitions. [2021-11-20 23:58:55,382 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 7334 transitions. Word has length 68 [2021-11-20 23:58:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:55,383 INFO L470 AbstractCegarLoop]: Abstraction has 5522 states and 7334 transitions. [2021-11-20 23:58:55,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 7334 transitions. [2021-11-20 23:58:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 23:58:55,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:55,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:55,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:58:55,387 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash -746381525, now seen corresponding path program 1 times [2021-11-20 23:58:55,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:55,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116148752] [2021-11-20 23:58:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:55,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:55,447 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:55,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116148752] [2021-11-20 23:58:55,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116148752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:55,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:55,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:58:55,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504407344] [2021-11-20 23:58:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:55,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:58:55,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:55,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:58:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:58:55,449 INFO L87 Difference]: Start difference. First operand 5522 states and 7334 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:56,841 INFO L93 Difference]: Finished difference Result 8036 states and 10955 transitions. [2021-11-20 23:58:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:58:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-20 23:58:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:56,847 INFO L225 Difference]: With dead ends: 8036 [2021-11-20 23:58:56,847 INFO L226 Difference]: Without dead ends: 5645 [2021-11-20 23:58:56,850 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 23:58:56,851 INFO L933 BasicCegarLoop]: 1328 mSDtfsCounter, 754 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:56,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1936 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:58:56,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2021-11-20 23:58:57,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 4547. [2021-11-20 23:58:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 4540 states have (on average 1.3365638766519823) internal successors, (6068), 4546 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 6068 transitions. [2021-11-20 23:58:57,682 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 6068 transitions. Word has length 68 [2021-11-20 23:58:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:57,683 INFO L470 AbstractCegarLoop]: Abstraction has 4547 states and 6068 transitions. [2021-11-20 23:58:57,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:57,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 6068 transitions. [2021-11-20 23:58:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 23:58:57,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:57,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:57,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 23:58:57,686 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:58:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1614233913, now seen corresponding path program 1 times [2021-11-20 23:58:57,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:57,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757314591] [2021-11-20 23:58:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:57,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:58:57,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757314591] [2021-11-20 23:58:57,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757314591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:57,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:57,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:58:57,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474253340] [2021-11-20 23:58:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:57,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:58:57,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:58:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:58:57,777 INFO L87 Difference]: Start difference. First operand 4547 states and 6068 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:58:59,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:59,539 INFO L93 Difference]: Finished difference Result 9294 states and 12652 transitions. [2021-11-20 23:58:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:58:59,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-20 23:58:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:59,546 INFO L225 Difference]: With dead ends: 9294 [2021-11-20 23:58:59,547 INFO L226 Difference]: Without dead ends: 6899 [2021-11-20 23:58:59,550 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 23:58:59,551 INFO L933 BasicCegarLoop]: 1396 mSDtfsCounter, 775 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:59,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 2483 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:58:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2021-11-20 23:59:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6891. [2021-11-20 23:59:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6891 states, 6884 states have (on average 1.340935502614759) internal successors, (9231), 6890 states have internal predecessors, (9231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:01,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6891 states to 6891 states and 9231 transitions. [2021-11-20 23:59:01,013 INFO L78 Accepts]: Start accepts. Automaton has 6891 states and 9231 transitions. Word has length 68 [2021-11-20 23:59:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:01,013 INFO L470 AbstractCegarLoop]: Abstraction has 6891 states and 9231 transitions. [2021-11-20 23:59:01,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6891 states and 9231 transitions. [2021-11-20 23:59:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 23:59:01,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:01,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:01,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 23:59:01,016 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:59:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash 563894881, now seen corresponding path program 1 times [2021-11-20 23:59:01,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:01,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516765853] [2021-11-20 23:59:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:01,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:59:01,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:01,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516765853] [2021-11-20 23:59:01,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516765853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:01,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:01,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:59:01,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499156627] [2021-11-20 23:59:01,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:01,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:59:01,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:59:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:59:01,066 INFO L87 Difference]: Start difference. First operand 6891 states and 9231 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:03,775 INFO L93 Difference]: Finished difference Result 15333 states and 20857 transitions. [2021-11-20 23:59:03,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:59:03,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-20 23:59:03,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:03,785 INFO L225 Difference]: With dead ends: 15333 [2021-11-20 23:59:03,785 INFO L226 Difference]: Without dead ends: 10755 [2021-11-20 23:59:03,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:59:03,791 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 669 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:03,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 2519 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:59:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10755 states. [2021-11-20 23:59:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10755 to 10747. [2021-11-20 23:59:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10747 states, 10740 states have (on average 1.3308193668528865) internal successors, (14293), 10746 states have internal predecessors, (14293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10747 states to 10747 states and 14293 transitions. [2021-11-20 23:59:06,304 INFO L78 Accepts]: Start accepts. Automaton has 10747 states and 14293 transitions. Word has length 68 [2021-11-20 23:59:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:06,304 INFO L470 AbstractCegarLoop]: Abstraction has 10747 states and 14293 transitions. [2021-11-20 23:59:06,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10747 states and 14293 transitions. [2021-11-20 23:59:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 23:59:06,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:06,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:06,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 23:59:06,308 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:59:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1885995579, now seen corresponding path program 1 times [2021-11-20 23:59:06,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:06,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607710999] [2021-11-20 23:59:06,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:06,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:59:06,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:06,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607710999] [2021-11-20 23:59:06,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607710999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:06,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:06,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:59:06,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720440308] [2021-11-20 23:59:06,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:06,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:59:06,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:59:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:59:06,570 INFO L87 Difference]: Start difference. First operand 10747 states and 14293 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:13,268 INFO L93 Difference]: Finished difference Result 21260 states and 28786 transitions. [2021-11-20 23:59:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:59:13,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-20 23:59:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:13,291 INFO L225 Difference]: With dead ends: 21260 [2021-11-20 23:59:13,291 INFO L226 Difference]: Without dead ends: 19247 [2021-11-20 23:59:13,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:59:13,297 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 5385 mSDsluCounter, 4523 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5385 SdHoareTripleChecker+Valid, 5762 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:13,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5385 Valid, 5762 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:59:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19247 states. [2021-11-20 23:59:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19247 to 10616. [2021-11-20 23:59:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10616 states, 10612 states have (on average 1.3305691669807764) internal successors, (14120), 10615 states have internal predecessors, (14120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10616 states to 10616 states and 14120 transitions. [2021-11-20 23:59:15,965 INFO L78 Accepts]: Start accepts. Automaton has 10616 states and 14120 transitions. Word has length 69 [2021-11-20 23:59:15,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:15,965 INFO L470 AbstractCegarLoop]: Abstraction has 10616 states and 14120 transitions. [2021-11-20 23:59:15,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 10616 states and 14120 transitions. [2021-11-20 23:59:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 23:59:15,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:15,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:15,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 23:59:15,969 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:59:15,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1898328567, now seen corresponding path program 1 times [2021-11-20 23:59:15,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:15,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704153726] [2021-11-20 23:59:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:15,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:59:16,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:16,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704153726] [2021-11-20 23:59:16,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704153726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:16,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:16,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:59:16,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805650342] [2021-11-20 23:59:16,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:16,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:59:16,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:16,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:59:16,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:59:16,011 INFO L87 Difference]: Start difference. First operand 10616 states and 14120 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:19,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:19,251 INFO L93 Difference]: Finished difference Result 19817 states and 26681 transitions. [2021-11-20 23:59:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:59:19,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-20 23:59:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:19,261 INFO L225 Difference]: With dead ends: 19817 [2021-11-20 23:59:19,261 INFO L226 Difference]: Without dead ends: 10654 [2021-11-20 23:59:19,268 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 23:59:19,269 INFO L933 BasicCegarLoop]: 1071 mSDtfsCounter, 817 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:19,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 1536 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:59:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10654 states. [2021-11-20 23:59:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 8856. [2021-11-20 23:59:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8856 states, 8852 states have (on average 1.3375508359692725) internal successors, (11840), 8855 states have internal predecessors, (11840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8856 states to 8856 states and 11840 transitions. [2021-11-20 23:59:21,732 INFO L78 Accepts]: Start accepts. Automaton has 8856 states and 11840 transitions. Word has length 69 [2021-11-20 23:59:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:21,732 INFO L470 AbstractCegarLoop]: Abstraction has 8856 states and 11840 transitions. [2021-11-20 23:59:21,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8856 states and 11840 transitions. [2021-11-20 23:59:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 23:59:21,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:21,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:21,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 23:59:21,735 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:59:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash 936354534, now seen corresponding path program 1 times [2021-11-20 23:59:21,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:21,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888606037] [2021-11-20 23:59:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:21,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:59:21,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:21,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888606037] [2021-11-20 23:59:21,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888606037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:21,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:21,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 23:59:21,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950865437] [2021-11-20 23:59:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:21,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:59:21,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:59:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:59:21,898 INFO L87 Difference]: Start difference. First operand 8856 states and 11840 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:30,578 INFO L93 Difference]: Finished difference Result 21372 states and 28855 transitions. [2021-11-20 23:59:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 23:59:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-20 23:59:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:30,600 INFO L225 Difference]: With dead ends: 21372 [2021-11-20 23:59:30,600 INFO L226 Difference]: Without dead ends: 19200 [2021-11-20 23:59:30,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:59:30,608 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 4676 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 3655 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4676 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 3906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 3655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:30,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4676 Valid, 3218 Invalid, 3906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 3655 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:59:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19200 states. [2021-11-20 23:59:33,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19200 to 8712. [2021-11-20 23:59:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8708 states have (on average 1.3388837850252642) internal successors, (11659), 8711 states have internal predecessors, (11659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 11659 transitions. [2021-11-20 23:59:33,204 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 11659 transitions. Word has length 70 [2021-11-20 23:59:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:33,205 INFO L470 AbstractCegarLoop]: Abstraction has 8712 states and 11659 transitions. [2021-11-20 23:59:33,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 11659 transitions. [2021-11-20 23:59:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 23:59:33,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:33,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:33,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 23:59:33,207 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:59:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash 521195886, now seen corresponding path program 1 times [2021-11-20 23:59:33,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:33,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180288202] [2021-11-20 23:59:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:33,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:59:33,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:33,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180288202] [2021-11-20 23:59:33,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180288202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:33,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:33,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:59:33,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139189799] [2021-11-20 23:59:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:33,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:59:33,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:59:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:59:33,322 INFO L87 Difference]: Start difference. First operand 8712 states and 11659 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:39,057 INFO L93 Difference]: Finished difference Result 14013 states and 18751 transitions. [2021-11-20 23:59:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:59:39,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-20 23:59:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:39,071 INFO L225 Difference]: With dead ends: 14013 [2021-11-20 23:59:39,071 INFO L226 Difference]: Without dead ends: 13395 [2021-11-20 23:59:39,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:59:39,075 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 3460 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3460 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:39,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3460 Valid, 2490 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:59:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13395 states. [2021-11-20 23:59:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13395 to 8712. [2021-11-20 23:59:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8708 states have (on average 1.3386541111621497) internal successors, (11657), 8711 states have internal predecessors, (11657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 11657 transitions. [2021-11-20 23:59:41,655 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 11657 transitions. Word has length 70 [2021-11-20 23:59:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:41,655 INFO L470 AbstractCegarLoop]: Abstraction has 8712 states and 11657 transitions. [2021-11-20 23:59:41,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 11657 transitions. [2021-11-20 23:59:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 23:59:41,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:41,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:41,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 23:59:41,658 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:59:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:41,658 INFO L85 PathProgramCache]: Analyzing trace with hash 358544031, now seen corresponding path program 1 times [2021-11-20 23:59:41,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:41,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017886257] [2021-11-20 23:59:41,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:41,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:59:41,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:41,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017886257] [2021-11-20 23:59:41,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017886257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:41,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:41,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:59:41,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327294020] [2021-11-20 23:59:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:41,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:59:41,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:59:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:59:41,782 INFO L87 Difference]: Start difference. First operand 8712 states and 11657 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:48,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:48,719 INFO L93 Difference]: Finished difference Result 16104 states and 21623 transitions. [2021-11-20 23:59:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:59:48,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-20 23:59:48,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:48,735 INFO L225 Difference]: With dead ends: 16104 [2021-11-20 23:59:48,736 INFO L226 Difference]: Without dead ends: 15128 [2021-11-20 23:59:48,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:59:48,740 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 3604 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3604 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:48,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3604 Valid, 3212 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3510 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:59:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15128 states. [2021-11-20 23:59:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15128 to 8712. [2021-11-20 23:59:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8708 states have (on average 1.3384244372990353) internal successors, (11655), 8711 states have internal predecessors, (11655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 11655 transitions. [2021-11-20 23:59:51,393 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 11655 transitions. Word has length 70 [2021-11-20 23:59:51,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:51,394 INFO L470 AbstractCegarLoop]: Abstraction has 8712 states and 11655 transitions. [2021-11-20 23:59:51,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 11655 transitions. [2021-11-20 23:59:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 23:59:51,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:51,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:51,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 23:59:51,402 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:59:51,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1750057004, now seen corresponding path program 1 times [2021-11-20 23:59:51,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:51,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112545998] [2021-11-20 23:59:51,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:51,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:51,456 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 23:59:51,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:51,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112545998] [2021-11-20 23:59:51,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112545998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:51,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:51,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:59:51,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7387385] [2021-11-20 23:59:51,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:51,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:59:51,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:59:51,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:59:51,458 INFO L87 Difference]: Start difference. First operand 8712 states and 11655 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:55,641 INFO L93 Difference]: Finished difference Result 18542 states and 25482 transitions. [2021-11-20 23:59:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:59:55,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-20 23:59:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:55,653 INFO L225 Difference]: With dead ends: 18542 [2021-11-20 23:59:55,653 INFO L226 Difference]: Without dead ends: 12248 [2021-11-20 23:59:55,660 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 23:59:55,660 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 608 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:55,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1593 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:59:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12248 states. [2021-11-20 23:59:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12248 to 10894. [2021-11-20 23:59:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10894 states, 10890 states have (on average 1.3527089072543619) internal successors, (14731), 10893 states have internal predecessors, (14731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10894 states to 10894 states and 14731 transitions. [2021-11-20 23:59:59,225 INFO L78 Accepts]: Start accepts. Automaton has 10894 states and 14731 transitions. Word has length 71 [2021-11-20 23:59:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:59,225 INFO L470 AbstractCegarLoop]: Abstraction has 10894 states and 14731 transitions. [2021-11-20 23:59:59,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:59:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 10894 states and 14731 transitions. [2021-11-20 23:59:59,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 23:59:59,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:59,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:59,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 23:59:59,229 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-20 23:59:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:59,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1762368696, now seen corresponding path program 1 times [2021-11-20 23:59:59,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:59,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704648346] [2021-11-20 23:59:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:59,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:59:59,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:59,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704648346] [2021-11-20 23:59:59,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704648346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:59,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:59,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:59:59,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752465628] [2021-11-20 23:59:59,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:59,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:59:59,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:59,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:59:59,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:59:59,595 INFO L87 Difference]: Start difference. First operand 10894 states and 14731 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:14,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:14,690 INFO L93 Difference]: Finished difference Result 32459 states and 44079 transitions. [2021-11-21 00:00:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 00:00:14,691 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-21 00:00:14,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:14,730 INFO L225 Difference]: With dead ends: 32459 [2021-11-21 00:00:14,730 INFO L226 Difference]: Without dead ends: 31877 [2021-11-21 00:00:14,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2021-11-21 00:00:14,736 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 5728 mSDsluCounter, 8380 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5728 SdHoareTripleChecker+Valid, 9629 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:14,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5728 Valid, 9629 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 00:00:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31877 states. [2021-11-21 00:00:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31877 to 10874. [2021-11-21 00:00:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10874 states, 10871 states have (on average 1.3525894581915188) internal successors, (14704), 10873 states have internal predecessors, (14704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10874 states to 10874 states and 14704 transitions. [2021-11-21 00:00:18,934 INFO L78 Accepts]: Start accepts. Automaton has 10874 states and 14704 transitions. Word has length 72 [2021-11-21 00:00:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:18,934 INFO L470 AbstractCegarLoop]: Abstraction has 10874 states and 14704 transitions. [2021-11-21 00:00:18,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 10874 states and 14704 transitions. [2021-11-21 00:00:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-21 00:00:18,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:18,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:18,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-21 00:00:18,938 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:00:18,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash -891142700, now seen corresponding path program 1 times [2021-11-21 00:00:18,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:18,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122771984] [2021-11-21 00:00:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:18,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:00:18,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:18,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122771984] [2021-11-21 00:00:18,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122771984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:18,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:18,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:00:18,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240790960] [2021-11-21 00:00:18,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:18,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:18,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:18,981 INFO L87 Difference]: Start difference. First operand 10874 states and 14704 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:23,387 INFO L93 Difference]: Finished difference Result 21059 states and 28762 transitions. [2021-11-21 00:00:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:23,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-21 00:00:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:23,399 INFO L225 Difference]: With dead ends: 21059 [2021-11-21 00:00:23,400 INFO L226 Difference]: Without dead ends: 11154 [2021-11-21 00:00:23,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:23,409 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 960 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:23,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 1399 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:00:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2021-11-21 00:00:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 9838. [2021-11-21 00:00:27,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9838 states, 9835 states have (on average 1.3608540925266903) internal successors, (13384), 9837 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9838 states to 9838 states and 13384 transitions. [2021-11-21 00:00:27,223 INFO L78 Accepts]: Start accepts. Automaton has 9838 states and 13384 transitions. Word has length 72 [2021-11-21 00:00:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:27,224 INFO L470 AbstractCegarLoop]: Abstraction has 9838 states and 13384 transitions. [2021-11-21 00:00:27,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 9838 states and 13384 transitions. [2021-11-21 00:00:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:00:27,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:27,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:27,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-21 00:00:27,226 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:00:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:27,227 INFO L85 PathProgramCache]: Analyzing trace with hash 830639487, now seen corresponding path program 1 times [2021-11-21 00:00:27,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:27,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378032393] [2021-11-21 00:00:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:27,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:00:27,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:27,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378032393] [2021-11-21 00:00:27,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378032393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:27,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:27,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-21 00:00:27,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619625119] [2021-11-21 00:00:27,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:27,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:00:27,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:00:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:00:27,511 INFO L87 Difference]: Start difference. First operand 9838 states and 13384 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:35,448 INFO L93 Difference]: Finished difference Result 16893 states and 22898 transitions. [2021-11-21 00:00:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:00:35,448 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-21 00:00:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:35,465 INFO L225 Difference]: With dead ends: 16893 [2021-11-21 00:00:35,465 INFO L226 Difference]: Without dead ends: 16325 [2021-11-21 00:00:35,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:00:35,469 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 5778 mSDsluCounter, 4666 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5778 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:35,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5778 Valid, 5640 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:00:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16325 states. [2021-11-21 00:00:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16325 to 9832. [2021-11-21 00:00:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9832 states, 9830 states have (on average 1.3606307222787386) internal successors, (13375), 9831 states have internal predecessors, (13375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9832 states to 9832 states and 13375 transitions. [2021-11-21 00:00:39,271 INFO L78 Accepts]: Start accepts. Automaton has 9832 states and 13375 transitions. Word has length 73 [2021-11-21 00:00:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:39,271 INFO L470 AbstractCegarLoop]: Abstraction has 9832 states and 13375 transitions. [2021-11-21 00:00:39,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 9832 states and 13375 transitions. [2021-11-21 00:00:39,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:00:39,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:39,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:39,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-21 00:00:39,273 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:00:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:39,274 INFO L85 PathProgramCache]: Analyzing trace with hash -581497913, now seen corresponding path program 1 times [2021-11-21 00:00:39,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:39,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658471129] [2021-11-21 00:00:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:39,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:00:39,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:39,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658471129] [2021-11-21 00:00:39,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658471129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:39,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:39,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-21 00:00:39,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24242612] [2021-11-21 00:00:39,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:39,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:00:39,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:39,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:00:39,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:00:39,591 INFO L87 Difference]: Start difference. First operand 9832 states and 13375 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:57,343 INFO L93 Difference]: Finished difference Result 34719 states and 47107 transitions. [2021-11-21 00:00:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 00:00:57,343 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-21 00:00:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:57,384 INFO L225 Difference]: With dead ends: 34719 [2021-11-21 00:00:57,384 INFO L226 Difference]: Without dead ends: 34117 [2021-11-21 00:00:57,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2021-11-21 00:00:57,390 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 6230 mSDsluCounter, 6986 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6230 SdHoareTripleChecker+Valid, 8172 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:57,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6230 Valid, 8172 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 00:00:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34117 states. [2021-11-21 00:01:01,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34117 to 9792. [2021-11-21 00:01:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9792 states, 9791 states have (on average 1.3608415892145849) internal successors, (13324), 9791 states have internal predecessors, (13324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9792 states to 9792 states and 13324 transitions. [2021-11-21 00:01:01,537 INFO L78 Accepts]: Start accepts. Automaton has 9792 states and 13324 transitions. Word has length 73 [2021-11-21 00:01:01,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:01,537 INFO L470 AbstractCegarLoop]: Abstraction has 9792 states and 13324 transitions. [2021-11-21 00:01:01,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:01,537 INFO L276 IsEmpty]: Start isEmpty. Operand 9792 states and 13324 transitions. [2021-11-21 00:01:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:01:01,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:01,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:01,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-21 00:01:01,540 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:01:01,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1325615543, now seen corresponding path program 1 times [2021-11-21 00:01:01,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:01,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740960241] [2021-11-21 00:01:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:01,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:01:01,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:01,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740960241] [2021-11-21 00:01:01,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740960241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:01,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:01,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:01:01,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58487705] [2021-11-21 00:01:01,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:01,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:01:01,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:01,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:01:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:01,597 INFO L87 Difference]: Start difference. First operand 9792 states and 13324 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:07,675 INFO L93 Difference]: Finished difference Result 22852 states and 31559 transitions. [2021-11-21 00:01:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:01:07,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-21 00:01:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:07,691 INFO L225 Difference]: With dead ends: 22852 [2021-11-21 00:01:07,691 INFO L226 Difference]: Without dead ends: 14402 [2021-11-21 00:01:07,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:07,697 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 629 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:07,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 1379 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:01:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14402 states. [2021-11-21 00:01:13,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14402 to 13380. [2021-11-21 00:01:13,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13380 states, 13379 states have (on average 1.3594439046266538) internal successors, (18188), 13379 states have internal predecessors, (18188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13380 states to 13380 states and 18188 transitions. [2021-11-21 00:01:13,343 INFO L78 Accepts]: Start accepts. Automaton has 13380 states and 18188 transitions. Word has length 73 [2021-11-21 00:01:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:13,343 INFO L470 AbstractCegarLoop]: Abstraction has 13380 states and 18188 transitions. [2021-11-21 00:01:13,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 13380 states and 18188 transitions. [2021-11-21 00:01:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:01:13,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:13,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:13,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-21 00:01:13,346 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:01:13,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1745719696, now seen corresponding path program 1 times [2021-11-21 00:01:13,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:13,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784780519] [2021-11-21 00:01:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:13,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:01:13,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:13,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784780519] [2021-11-21 00:01:13,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784780519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:13,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:13,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:01:13,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881620726] [2021-11-21 00:01:13,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:13,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:01:13,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:01:13,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:01:13,435 INFO L87 Difference]: Start difference. First operand 13380 states and 18188 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:18,966 INFO L93 Difference]: Finished difference Result 24652 states and 33732 transitions. [2021-11-21 00:01:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:01:18,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-21 00:01:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:18,980 INFO L225 Difference]: With dead ends: 24652 [2021-11-21 00:01:18,981 INFO L226 Difference]: Without dead ends: 12656 [2021-11-21 00:01:18,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:01:18,997 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 1663 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:18,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 1509 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:01:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12656 states. [2021-11-21 00:01:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12656 to 12650. [2021-11-21 00:01:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12650 states, 12649 states have (on average 1.3538619653727568) internal successors, (17125), 12649 states have internal predecessors, (17125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12650 states to 12650 states and 17125 transitions. [2021-11-21 00:01:24,434 INFO L78 Accepts]: Start accepts. Automaton has 12650 states and 17125 transitions. Word has length 73 [2021-11-21 00:01:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:24,434 INFO L470 AbstractCegarLoop]: Abstraction has 12650 states and 17125 transitions. [2021-11-21 00:01:24,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 12650 states and 17125 transitions. [2021-11-21 00:01:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 00:01:24,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:24,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:24,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-21 00:01:24,437 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:01:24,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:24,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1692473838, now seen corresponding path program 1 times [2021-11-21 00:01:24,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:24,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555434496] [2021-11-21 00:01:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:24,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:01:24,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:24,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555434496] [2021-11-21 00:01:24,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555434496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:24,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:24,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:01:24,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972399835] [2021-11-21 00:01:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:24,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:01:24,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:24,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:01:24,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:24,494 INFO L87 Difference]: Start difference. First operand 12650 states and 17125 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:32,844 INFO L93 Difference]: Finished difference Result 29906 states and 40963 transitions. [2021-11-21 00:01:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:01:32,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-21 00:01:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:32,865 INFO L225 Difference]: With dead ends: 29906 [2021-11-21 00:01:32,865 INFO L226 Difference]: Without dead ends: 19004 [2021-11-21 00:01:32,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:32,872 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 535 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:32,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 1403 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:01:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19004 states. [2021-11-21 00:01:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19004 to 17564. [2021-11-21 00:01:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17564 states, 17563 states have (on average 1.3494847121790128) internal successors, (23701), 17563 states have internal predecessors, (23701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17564 states to 17564 states and 23701 transitions. [2021-11-21 00:01:40,425 INFO L78 Accepts]: Start accepts. Automaton has 17564 states and 23701 transitions. Word has length 75 [2021-11-21 00:01:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:40,425 INFO L470 AbstractCegarLoop]: Abstraction has 17564 states and 23701 transitions. [2021-11-21 00:01:40,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 17564 states and 23701 transitions. [2021-11-21 00:01:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-21 00:01:40,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:40,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:40,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-21 00:01:40,428 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:01:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1151547134, now seen corresponding path program 1 times [2021-11-21 00:01:40,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:40,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036077796] [2021-11-21 00:01:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:40,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:01:40,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:40,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036077796] [2021-11-21 00:01:40,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036077796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:40,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:40,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:01:40,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138877674] [2021-11-21 00:01:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:40,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:01:40,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:01:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:40,479 INFO L87 Difference]: Start difference. First operand 17564 states and 23701 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:01:51,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:51,910 INFO L93 Difference]: Finished difference Result 41873 states and 57060 transitions. [2021-11-21 00:01:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:01:51,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-21 00:01:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:51,948 INFO L225 Difference]: With dead ends: 41873 [2021-11-21 00:01:51,948 INFO L226 Difference]: Without dead ends: 26487 [2021-11-21 00:01:51,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:51,961 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 426 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:51,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1469 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:01:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26487 states. [2021-11-21 00:02:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26487 to 24389. [2021-11-21 00:02:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24389 states, 24388 states have (on average 1.3425045104149582) internal successors, (32741), 24388 states have internal predecessors, (32741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24389 states to 24389 states and 32741 transitions. [2021-11-21 00:02:02,770 INFO L78 Accepts]: Start accepts. Automaton has 24389 states and 32741 transitions. Word has length 78 [2021-11-21 00:02:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:02,770 INFO L470 AbstractCegarLoop]: Abstraction has 24389 states and 32741 transitions. [2021-11-21 00:02:02,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 24389 states and 32741 transitions. [2021-11-21 00:02:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-21 00:02:02,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:02,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:02,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-21 00:02:02,773 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:02:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1874224031, now seen corresponding path program 1 times [2021-11-21 00:02:02,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:02,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099247271] [2021-11-21 00:02:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:02,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:02:02,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:02,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099247271] [2021-11-21 00:02:02,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099247271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:02,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:02,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:02:02,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587888763] [2021-11-21 00:02:02,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:02,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:02:02,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:02:02,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:02:02,899 INFO L87 Difference]: Start difference. First operand 24389 states and 32741 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:33,087 INFO L93 Difference]: Finished difference Result 60961 states and 81341 transitions. [2021-11-21 00:02:33,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 00:02:33,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-21 00:02:33,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:33,172 INFO L225 Difference]: With dead ends: 60961 [2021-11-21 00:02:33,172 INFO L226 Difference]: Without dead ends: 60959 [2021-11-21 00:02:33,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:02:33,182 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 4978 mSDsluCounter, 3804 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 4887 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:33,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4978 Valid, 4887 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:02:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60959 states. [2021-11-21 00:02:46,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60959 to 26740. [2021-11-21 00:02:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26740 states, 26739 states have (on average 1.336998391862074) internal successors, (35750), 26739 states have internal predecessors, (35750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26740 states to 26740 states and 35750 transitions. [2021-11-21 00:02:46,479 INFO L78 Accepts]: Start accepts. Automaton has 26740 states and 35750 transitions. Word has length 82 [2021-11-21 00:02:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:46,479 INFO L470 AbstractCegarLoop]: Abstraction has 26740 states and 35750 transitions. [2021-11-21 00:02:46,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:02:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 26740 states and 35750 transitions. [2021-11-21 00:02:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-21 00:02:46,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:46,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:46,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-21 00:02:46,486 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-21 00:02:46,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1594343934, now seen corresponding path program 1 times [2021-11-21 00:02:46,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:46,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402473270] [2021-11-21 00:02:46,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:46,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:02:46,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:46,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402473270] [2021-11-21 00:02:46,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402473270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:46,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:46,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:02:46,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824469632] [2021-11-21 00:02:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:46,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:02:46,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:02:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:02:46,551 INFO L87 Difference]: Start difference. First operand 26740 states and 35750 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)